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Full listing of The British Geological Survey Lexicon of Named Rock Units

"Albany Mudstones with Limestone Nodules" [Obsolete Name and Code: Use GSE] "Bedded Tuff" [Obsolete Name and Code: Use DPT] "Ferruginous Limestone Series" "Knoll Reef Limestones" [Obsolete Name and Code: Use LOLS] "Lower River Terrace Deposits" [Obsolete Name and Code: Use CASSG] "Lower" St Bees Sandstone [Obsolete Name and Code: Use SBS] "Meneage Crush Zone" [Obsolete Name and Code: Use RDBR] "Red Series" clays or glaciolacustrine deposits [Obsolete Name and Code: Use UGCL] "Syenite on Ridge between Scaw'd Law and Roger Law" [Obsolete Name and Code: Use BALW] "Upper" St Bees Sandstone [Obsolete Name and Code: Use CSA] 'F' Seam 'Fereneze Lavas' [Obsolete Name and Code: Use FZLA] 'Fulmar Sands' [Obsolete Name and Code: Use FLMR] 'Gleniffer Lavas' [Obsolete Name and Code: Use GLLA] 'Greystone' 'H' Seam 'Lower Unit' of the Middle Bagshot Beds [Obsolete Name and Code: Use SWCL] 'Norwich Chalk' 'Puffin Formation' [Obsolete Name and Code: Use FLMR] 'S Airde Beinn Plug 'Syenite' Or 'Diorite Intrusions' 'Varicoloured Unit' of the Dunrobin Bay Formation [Obsolete Name and Code: Use GOLS] (Kingsteps) Nairn Sandstones [Obsolete Name and Code: Use KISA] (Localised Part Of) Cwm Crychan Formation [Obsolete Name and Code: Use BRNY, TRE] (Part of the) Lower Old Red Sandstone [Obsolete Name and Code: Use CRDY] (Sandstone in) Cwm Crychan Formation [Obsolete Name and Code: Use CRYH] (Unnamed Limestone) [Obsolete Name and Code: Use LUSA] (Unnamed) Andesites [Obsolete Name and Code: Use BDBR] ? Lateral Equivalent Of Glenfinnan Group ? Lateral Equivalent Of Morar Group ?Glenramskill Formation [Obsolete Code: Use AGMB] [Obsolete Code: Use CBN] [Obsolete Code: Use CER] [Obsolete Code: Use CHSI] [Obsolete Code: Use DLN] [Obsolete Code: Use FRNA] [Obsolete Code: Use KES] [Obsolete Code: Use LQ] [Obsolete Code: Use MCD] [Obsolete Code: Use OYS] [Obsolete Code: Use TPG] [Obsolete Code: Use TWN] [Reticuloceras] Bilingue Marine Band [Obsolete Name and Code: Use BIMB] 15/16-6 Sand Member [Obsolete Name and Code: Use CHNT] 1st Terrace Deposits (River Severn) [Obsolete Name and Code: Use PSTT] 1st Terrace Of River Lark (Bristow,1990) 22 Yard Coal (West Yorkshire) 25-Foot Drift Of Vale Of York 27 Yard Coal (West Yorkshire) 2nd Terrace Of River Cam 2nd Terrace Of River Lark (Bristow,1990) 32 Yard Coal (West Yorkshire) 36 Yard Coal (West Yorkshire) 36 Yard Rock 36 Yards Band Coal 3rd Terrace Of River Lark (Bristow,1990) 48 Yard Band Coal (West Yorkshire) 48 Yard Rock 48 Yards Band Coal [West Yorkshire] 4th Terrace Of River Cam 4th Terrace Of River Lark (Bristow,1990) 4th Terrace of River Lark (Clayton, 1983) [Obsolete Name and Code: Use FHAM] 5 Foot Vein [Obsolete Name and Code: Use 5FTC] 5th Terrace Of River Lark 5th Terrace of River Lark (Clayton 1983) [Obsolete Name and Code: Use ERIS] 6th Terrace (River Severn) [Obsolete Name and Code: Use SPHT] 80 Yard Band Coal 80 Yard Band Coal (West Yorkshire) 80 Yard Rock A variety of local names [Obsolete Name and Code: Use MPA] A'Mharagach Member A'Mhoine Psammite Formation [Obsolete Name and Code: Use ALPS] A-Bed Evaporite Abbey Conglomerate Abbey Gravel(s) Abbey Head Bed Abbey Head Formation [Obsolete Name and Code: Use ABH] Abbey Head Member [Obsolete Name and Code: Use ABH] Abbey Sand and Gravel Member Abbey Shale Formation Abbey Wood Member [Obsolete Name and Code: Use BLB] Abbeyhill Shales Abbotsbury Cornbrash Formation [Obsolete Name and Code: Use CB] Abbotsbury Iron Ore [Obsolete Name and Code: Use ABI] Abbotsbury Ironstone [Obsolete Name and Code: Use ABI] Abbotsbury Ironstone Formation Abbotsford Flags Abbotsford Flags and Grieston Shales Abbotsgrange Beds [Obsolete Name and Code: Use AGSI] Abbotsgrange Silt Member Abbotsham Beds [Obsolete Name and Code: Use BFF] Abbotsham Formation [Obsolete Name and Code: Use BFF] Abbrook Clay and Sand [Obsolete Name and Code: Use AB] Abbrook Clay and Sand Member Abdon Group [Obsolete Name And Code] Abdon Limestone Formation [Obsolete Name And Code] Abdy Coal Abdy Coal (South Yorkshire And North Nottinghamshire) Abdy Rock Aber Geirch Phyllites And Grits Aber Mawr Beds [Obsolete Name and Code: Use ABMR] Aber Mawr Formation Aber Mawr Shale Formation Aber Pensidian Mudstone Member Abercastle Beds [Obsolete Name And Code: Use OGH] Aberchirder Pluton Abercorn Main Coal (Glasgow) Abercorn Rough Coal (Glasgow) Abercorn Splint Coal (Glasgow) Abercorn Steam Coal (Glasgow) Abercorn Stony Coal (Glasgow) Abercorn Turf Coal (Glasgow) Abercorris Group Abercriban Oolite [Obsolete Name and Code: Use ABO] Abercriban Oolite Formation [Obsolete Name and Code: Use ABO] Abercriban Oolite Group [Obsolete Name and Code: Use ABO] Abercriban Oolite Subgroup Abercwmeiddaw Group Aberdaron Bay Group Aberdaron Bay Group [Obsolete Name And Code: Use NFR] Aberdaron Formation Aberdeen Division Aberdeen Formation Aberdeen Ground Beds [Obsolete Name and Code: Use ANG] Aberdeen Ground Formation Aberdeen Pluton Aberedw Formation Aberfoyle Slate [Obsolete Name and Code: Use DCAS] Aberfoyle Slate Formation Aberfoyle Slates [Obsolete Name and Code: Use DCLE] Abergeldie Pluton Abergorki Coal (South Wales) Abergwilli Formation Aberkenfig Formation Aberlady Formation Abersytwyth Grits Formation [Obsolete Name and Code: Use AGF] Aberystwyth Grits Group Abhainn Mhor Gabbro Intrusion Abington Formation [Obsolete Name and Code: Use KKF] Accerhill Sandstone Accerhill Sandstone Formation [Obsolete Name and Code: Use ACHS] Accrington Mudstone Acer Hill Sandstone [Obsolete Entry: Incorrect Spelling: See ACHS] Ach'Uaine Cluster Achanarras Fish Bed Member Achanarras Limestone [Obsolete Name And Code: Use AFB] Achateny Breccia Member Achnacarry Striped Formation Achnaconeran Striped Formation Achnacree Sand and Gravel Formation Achnaha Quartz Gabbro Zone Achnaha Quartz-Monzonite Facies Achnaha Tonalite - Quartz-Monzonite Intrusion Achnaha Tonalite Facies Achneim Striped Formation Achray Sandstone [Obsolete Name and Code: Use LADG] Achreamie Sandstone Formation [Obsolete Name and Code: Use CKBA] Achrimsdale Sandstone Member Achscrabster Flagstone Formation [Obsolete Name and Code: Use ACFM] Achscrabster Flagstone Member Acklington Dyke Acklinton Formation Of Bowen (1999) Acklinton Till Formation Ackton Rock Ackworth Division [Obsolete Name and Code: Use ACKW] Ackworth Member Ackworth Rock Acre Coal Acre Coal (Northumberland) Acre Limestone [Obsolete Name And Code: Use TYL] Acre Limestone [Obsolete Name and Code: Use TYL] Acton Group Acton Park Limestone Acton Scott Formation Acton Scott Group [Obsolete Name and Code: Use ASGP] Acton Scott Limestone Acton Turville Beds Acuminata Beds Acutistriatum Band [Obsolete Name and Code: Use ACCO] Acutistriatum Bed [Obsolete Name and Code: Use ACCO] Acutistriatum-Comptoni Bed Adail Mudstones Formation Adamson Band Addingham Edge Grit Addingham High Moor Grit [Obsolete Name and Code: Use AE] Addlethorpe Grit Addlethorpe Marine Band Adur Valley Formation Adwalton Black Bed Coal Adwalton Black Bed Coal (West Yorkshire) Adwalton Stone Coal Aed Mheall Member (Western Intrusion, Rum Layered Suite) Aegiranum Marine Band Aeolian deposits Afon Gam Formation [Obsolete Name And Code: See DYN] Afton Formation [Obsolete Name And Code: Use KKF] Afton Lodge Clay Formation Aghyaran Formation Agill Sandstone Agill Shale Agneash Grit (Manx Slates) [Obsolete Name and Code: Use CGA] Agneash Grits [Obsolete Name and Code: Use MHL] Agnew's Hill Tuff Member Agricultural Cutting Aid Crag Sandstone Aikbank Farm Glacigenic Formation Ailleag Diamicton Formation Ailleag Diamicton Member [Obsolete Name and Code: Use AILL] Ailnack Phyllite And Limestone Formation Ailsa Craig Microgranite Ailstone Member (Warwickshire Avon) Ailstone Member [Obsolete Name and Code: Use CRTD] Ailstone Terrace Deposits (Warwickshire Avon) [Obsolete Name and Code: Use AILT] Airdrie Blackband Coal (Central Coalfield) Airdrie Blackband Ironstone (Central Coalfield) Airdrie Virtuewell Coal (Central Coalfield) Airfield Airth Shellband Airy's Bridge Formation [Obsolete Name and Code: Use AIB] Airy's Bridge Group [Obsolete Name and Code: Use AIB] Airy's Bridge Tuff Formation Aisholt Limestone Aisla Formation Aisla Sequence [Obsolete Name and Code: Use AIS] Aislaby Group [Obsolete Name And Code: See ZG] Aith - Spiggie Pluton Akers Steps and St Margarets Members [Obsolete Name and Code: Use LECH] Albany Division [Obsolete Name And Code: Use ALBY] Albany Group Alberbury Breccia Albert Coal (Rothbury Area) [Obsolete Name And Code: Use YARD] Albian Rocks (Undifferentiated) Albion Glacigenic Group Albion Sands Formation Albrighton Coal (Cumbria) Albrighton Coal Group [Obsolete Name And Code] Albrighton Marine Band [Duplicate Lexicon Entry: Use ABNMB] Albrighton Marine Band [Local Name: Use AMMB] Albrighton Seam (Cumbria) [Obsolete Name and Code: Use ALBN] Aldeburgh Member Aldeby Sand And Gravel Member Aldeby Sands and Gravels [Obsolete Name and Code: Use ASAG] Alderbury Breccia in Erbistock Beds [Obsolete Name and Code: Use ABBR] Alderney Sandstone Alderwood Mudstone Alderwood Mudstone Member [Obsolete Name and Code: Use AMM] Aldie Till Member Aldress Shale [Obsolete Name and Code: Use ADSH] Aldress Shale Formation Alecks Coal (Lothian) Alecs Coal (Cheadle) Alkaid Member Alkaline basic igneous rocks in the Orkneys [Obsolete Name and Code: Use DSV] Alla Glen Limestone Member Allargue Graphitic Schist Member Allens Coal (East Midlands) Allenton Sand And Gravel Allenton Terrace Deposits Aller Gravel [Obsolete Name and Code: Use AGR] Aller Gravel Formation Aller Halite Formation Allermuir Group [Obsolete Name And Code: Use ALMR] Allermuir Volcanic Member Allesley Conglomerate [Obsolete Name and Code: Use AYC, ASY] Allesley Member Allesley Sandstones And Conglomerates Alloa Cherry Coal Alloa Splint Coal Allt a' Mhuilinn Mudstone Formation Allt A'Chuirn Quartzite Member Allt A'Mhuilinn Pseudoleucite-Syenite And Associated Rocks Allt An T-Srathain Member Allt An T-Strathain Till Member Allt And Odhar Members Of The Allt Odhar Formation Of Bowen 1999 Allt Breac Beds Allt Crom Complex Allt Crom Granodiorite With Rafts Dominantly Of Appinitic Diorite Allt Crom Granodiorite With Rafts Of The Coire Nan Laogh Semipelite Formation Allt Crom Granodiorite With Rafts Of The Garva Bridge Psammite Formation Allt Crom Granodiorite With Rafts Of The Loch Laggan Psammite Formation Allt Crom Granodiorite With Rafts Of The Monadhliath Semipelite Formation Allt Crom Pluton [Obsolete Name and Code: Use ALCR] Allt Darrarie Intrusion Allt Ddu Mudstone Formation [Obsolete Name and Code: Use CSW] Allt Ddu Mudstones [Obsolete Name and Code: Use ADM] Allt Ddu Mudstones Formation [Obsolete Name And Code: Upper Part Of CSW] Allt Dhub Member Allt Dregnie Phyllite Member Allt Fawr Rhyolitic Tuff Formation Allt Goch Sandstone Formation Allt Goibhre Semipelite Formation Allt Lwyd Formation Allt Mor Na H-Uamha Member Allt na Beiste Member Allt Na Cuile Sandstone Member Allt Na H'Ath Siltstones [Obsolete Name and Code: Use SXS] Allt Na H-Airbhe Member Allt Nam Biorag Psammite Member Allt Odhar Peat Formation [Obsolete Name and Code: Use AOPT] Allt Odhar Peat Member Allt Sgiathaig Till Member Allt-Tair-Ffynnon Formation Allt-Tair-Ffynnon Formation And Nod Glas Formation (Undifferentiated) Allt-Y-Clych Conglomerate Formation Allt-Y-Clych Conglomerate Member (Form Facies) [Obsolete Name and Code: Use ACC] Alluvial and Glacial Deposits (Undifferentiated) Alluvial and glacial drift (undifferentiated) [Obsolete Name and Code: Use ALGD] Alluvial cone [Obsolete Name and Code: Use ALF] Alluvial delta [Obsolete Name and Code: Use ALF] Alluvial deposits and peat [Obsolete Name and Code: Use SLEV] Alluvial deposits, buried, postglacial estuarine-marine [see descriptions for limitations of use] Alluvial deposits, postglacial, terrestrial [see descriptions for limitations of use] Alluvial fan [Obsolete Name and Code: Use ALF] Alluvial fan deposits Alluvial fan deposits, 1 Alluvium Alluvium and alluvial fan deposits (undifferentiated) Alluvium and river terrace deposits (undifferentiated) Alluvium and river terrace deposits [Obsolete Name and Code: Use EHEN, CEVY] Alluvium, 1 Alluvium, 2 Almscliff Grit [Obsolete Name And Code: Use WWG] Alne Glacial Lake Formation [Obsolete Name and Code: Use ALNE] Alne Glaciolacustrine Formation Alne Hills Mudstone Bed Alness Member [Obsolete Name and Code: Use ALNS] Alness Spiculite Formation [Obsolete Name and Code: Use ALNS] Alness Spiculite Member Alpha Coal (North Wales) Alpha Rider Coal (North Wales) Alphington Breccia Formation Alphington Breccia Formation and Heavitree Breccia Formation (Undifferentiated) Alphington Breccia Member [Obsolete Name and Code: Use ALBR] Alphington Breccias [Obsolete Name and Code: Use ALBR] Alport Sandstone Alston Formation Alstonfield Limestone [Obsolete Name And Code: Within BLL] Altagoan Formation Alteen Shale Member Altena Group Alternata Limestone [Obsolete Name and Code: Use ALT] Alternata Limestone Formation Altmore Formation Altmore Schists [Obsolete Name And Code] Altnacealgach Alkali Feldspar-Syenite Altnaharra Psammite Formation Alton Coal (Leicester, Nottingham, Derby) Alton Marine Band Altonside Till Formation Alturlie Gravels Formation Alum Crag Grit Alum Rock [Obsolete Name and Code: Use AMSH] Alum Shale (Of The Glasgow Area) Alum Shale [Obsolete Name and Code: Use AMSH] Alum Shale Member Alum Shale Series [Obsolete Name and Code: Use AMSH] Alveley Member Alves Beds [Obsolete Name and Code: Use ALB] Alves Formation Am Binnein Formation Am Binnein Sandstone Formation Am Binnein Sandstones Formation [Obsolete Name and Code: Use ABN] Amaliae Marine Band Ambaston Member [Obsolete Name and Code: Use HETD] Ambaston Terrace Deposits Amethyst Member Amlwch Beds Amman Marine Band Amman Marine Band [Local Name: Use VDMB] Amman Rider Coal (South Wales) Amman Rider Coal, Seven-Feet Coal And Yard Coal (Undifferentiated) (South Wales) Ammonite and Belemnite Bed [Obsolete Name and Code: Use LECK] Ammonites Planorbis Beds [Obsolete Name and Code: Use WCT] Amphibolite (Of Guernsey And Sark) Amphibolite And Calcsilicate-Rock Of Uncertain Origin Amphibolite Of Uncertain Origin Ampthill Clay [Obsolete Name and Code: Use AMC] Ampthill Clay Formation Ampthill Clay Formation And Kimmeridge Clay Formation (Undifferentiated) Ampthill Clay Formation And West Walton Formation (Undifferentiated) [Obsolete Code: Use WWAC] Amundsen Formation Amundsen Sub-Unit [Obsolete Name and Code: Use AMND] An Sithean Granite An Socach Quartzite Formation An Socach/Cairnwell Quartzite An Stac Semipelite and Psammite Formation An T-Sron Formation An Tamhanachd Member An Tamhanachd Member And Beannan Buidhe Member (Undifferentiated) An Torran Pelite Anabacia Limestones Ancaster Beds [Obsolete Name And Code] Ancestral Thames River Terrace Deposits (Undifferentiated) Ancholme Clay Group [Obsolete Name and Code: Use AMG] Ancholme Group Ancient Boundary Structure Ancient Building Ancient Burial Ground Ancient Cultivation Area Ancient Disturbed Ground Ancient Embankment Ancient Enclosure Ancient Fill Ancient Mineral Working Ancient Road or Trackway Ancient Waste Tip Ancient Water Management Feature Ancliff Oolite Andesite (Uriconian Group) [Obsolete Name And Codepart Of UO] Andesite and Dacite Groups [Obsolete Name and Code: Use BFA] Andrew Sandstone unit Andrews Coal (Lothian) Andsell Mudstone Member Angulata Beds [Obsolete Name and Code: Use SASH] Angulata Clays [Obsolete Name and Code: Use SMD, BNBM] Angulatum Clays [Obsolete Name And Code: Use BNBM] Angus Sand [Obsolete Name and Code: Use HUGI] Angus Sands [Obsolete Name and Code: Use FLMR] Anker Sand And Gravel Annaclare Group Annagher Coal (Dungannon) Annandale Sandstone [Obsolete Name and Code: Use ANSA] Annandale Sandstone Bed [Obsolete Name and Code: Use ANSA] Annandale Sandstone Beds Annandale Sandstone Member [Obsolete Name and Code: Use ANSA] Annat Bay Formation Annie Formation Annie Sequence [Obsolete Name and Code: Use ANNE] Anstruther Beds [Obsolete Name and Code: Use ARBS] Anstruther Formation Anthracoceras Paucilobum Marine Band Anthracoceratites Marine Band Antrim Lava Group Anvil Limestone Aonach Beag Semipelite Formation Apestor Limestone [Obsolete Name and Code: Use ECL] Apestor Limestones [Obsolete Name And Code: See ECL] Appin Group Appin Group And Argyll Group (Undifferentiated) Appin Limestone Member Appin Phyllite And Limestone Formation Appin Quartzite [Obsolete Name and Code: Use MEDQ] Appin Quartzite Formation Appin Transition Formation Appinite Suite Appleby Group Appleby Group, Stewartry Group And Permian Sedimentary Rocks (Undifferentiated) Applecross Formation Applecross Subswarm Appledore Formation [Obsolete Name and Code: Use CKF] Applethwaite Beds [Duplicate Lexicon Entry: Use APB] Applethwaite Beds [Obsolete Name and Code: Use AP] Applethwaite Formation [Obsolete Name and Code: Use AP] Applethwaite Group [Obsolete Name and Code: Use AP] Applethwaite Member Applethwaite Series [Obsolete Name and Code: Use AP] Appleton Ell Coal Appletree Limestone Appletree-Worth Sandstone Appletreeworth Volcanic Formation Approximately Equivalent To The Monograptus Leintwardinensis Shales. Approximates to Productive Coal Measures [Duplicate Lexicon Entry: Use LMCM] Aptian And Albian Rocks (Undifferentiated) Aqueduct Coal (North Wales) Aqueduct Grit [Obsolete Name And Code: See GS] Aqueduct Rock [Obsolete Name and Code: Use OPS] Aran Boulder Bed Member Aran Fawddwy Formation Aran Fawddwyf Formation [Obsolete Name and Code: Use LLNC] Aran Volcanic Group Arbigland Beds [Obsolete Name and Code: Use ARLM] Arbigland Group [Obsolete Name and Code: Use ARLM] Arbigland Group [Obsolete Name And Code: Use ARLM] Arbigland Limestone Formation [Obsolete Name and Code: Use ARLM] Arbigland Limestone Member Arbigland Member [Obsolete Name and Code: Use ARLM] Arbikie Diamicton Member Arbriachan Intrusion Arbroath Formation [Obsolete Name and Code: Use AHS] Arbroath Sandstone [Obsolete Name and Code: Use AHS] Arbroath Sandstone Formation [Obsolete Name and Code: Use AHS] Arbroath Sandstone Member Arbroath Sandstones [Obsolete Name and Code: Use TEF] Arbuthnott Group [Obsolete Name And Code: See Arbuthnott-Garvock Group] Arbuthnott-Garvock Group Arbuthnott-Garvock Group And Strathmore Group (Undifferentiated) Arch Farm Sandstone Formation Archaean And Proterozoic Rocks (Undifferentiated) Archaean Rocks (Undifferentiated) Archaeological Excavation (Undivided) Archaeological Raised Ground (Undivided) Arched Mine Coal Archerbeck Beds Archerbeck Coal (Canonbie) Archerbeck Limestone Formation [Obsolete Name And Code: See AKB And TYLS] Archerbeck Ochre Bed Archiestown Pluton Arcow Formation Arctic Freshwater Bed Arctic Freshwater Bed [Duplicate Lexicon Entry: Use FRESA] Ard Mheall Member (Western Layered Intrusion, Rum Layered Suite) [Obsolete Code: Use RLW3] Ardair Semipelite Formation Ardalanish Striped Formation Ardara Pluton Ardara Pluton Phase 1 Ardara Pluton Phase 2 Ardara Pluton Phase 3 Ardassie Limestone Member Ardclach Granite Pluton Ardclach Pluton [Obsolete Name and Code: Use ADCL] Arden Limestone [Obsolete Name and Code: Use CAL] Arden Sandstone [Obsolete Name and Code: Use AS] Arden Sandstone Formation Arden Sandstone Group [Obsolete Name and Code: Use AS] Arden Sandstone Horizon [Obsolete Name and Code: Use AS] Arden Sandstone Member [Obsolete Name and Code: Use AS] Ardersier Silts Formation Ardgour Granite Gneiss Ardingly Sandstone [Obsolete Name and Code: Use ARS] Ardingly Sandstone Member Ardleigh Member Ardley Beds [Obsolete Name and Code: Use SHIP] Ardley Beds and Bladon Beds [Obsolete Name and Code: Use ARDY] Ardley Member Ardmillan Group Ardmillan Group (Lower Part) [Obsolete Name And Code: See AMN] Ardmillan Group (Upper Part) [Obsolete Name And Code: See AMN] Ardmillan Group, Albany Group And Barr Group (Undifferentiated) Ardmillan Series [Obsolete Name and Code: Use AMN] Ardmore Conglomerate Member Ardmore Formation Ardmore Grit [Obsolete Name and Code: Use DBAG] Ardmore Grit Formation [Obsolete Name And Code: See ARDM, ARDG And ARDC] Ardmore Grit Member Ardnamona Sandstone Formation Ardnamurchan Central Complex Ardnamurchan Centre 1 Ardnamurchan Centre 2 Ardnamurchan Centre 3 Ardnamurchan Dyke-Swarm Ardnamurchan Point Gabbro Ring Intrusion Ardnandave Sandstone Formation Ardnave Phyllite And Greywacke Formation Ardnish Formation Ardnish Formation And Breakish Formation (Undifferentiated) Ardrishaig Phyllite [Obsolete Name and Code: Use DBAP] Ardrishaig Phyllite Formation Ardrishaig Phyllites Ardross Lingula Band Ards Black Schist Ards Quartzite Ardscalpie Formation Ardtrea Sill Ardtun Beds Ardullie Silt Formation Ardvarney Limestone Member Ardverikie Till Formation Ardvreck Group Ardwell Beds, Middle [Obsolete Name and Code: Use ARD] Ardwell Bridge Basic Volcanic Member Ardwell Bridge Lavas [Obsolete Name and Code: Use LYBV] Ardwell Farm Formation Ardwell Flags [Obsolete Name and Code: Use ARD] Ardwell Flags Formation (Topmost Beds) Ardwell Formation [Obsolete Name and Code: Use ARD] Ardwell Group [Obsolete Name and Code: Use ARD] Ardwell Subgroup Ardwick Formation [Obsolete Name and Code: Use ARG] Ardwick Group [Obsolete Name and Code: Use WAWK] Ardwick Limestones [Obsolete Name and Code: Use HA] Ardwick Marl [Obsolete Name And Code: See ETM] Ardwick Marl(s) [Obsolete Name and Code: Use ETM] Ardwick Marls Arenaceous Coal Formation [Obsolete Name and Code: Use PES] Arenaceous Limestone [Obsolete Name and Code: Use MRF] Arenaceous Series [Obsolete Name and Code: Use ERSA] Arenig And Llanvirn Rocks (Undifferentiated) Arenig Ballantrae Volcanic Complex (assumed to be part of) [Obsolete Name and Code: Use CRV] Arenig Rocks (Undifferentiated) Arenig To Llandeilo Rocks (Undifferentiated) [Obsolete In Its Original Sense] Arfon Group Argill Marine Band Argill Marine Band [Local Name: Use LSMB] Argillaceous Series [Obsolete Name and Code: Use ANSH] Argoed Limestone Member Argyle Drift Coal (Somerset) Argyll And Northern Highlands Granitic Suite Argyll Carbonate Member Argyll Group Arisdale Quartzite Member Arley And Exhall Sandstones Arley Coal (South Lancashire) Arley Conglomerate [Obsolete Name And Code: See ARSA] Arley Mine [Obsolete Name and Code: Use ARMC] Arley Mine Coal Arley Sandstone [Obsolete Name and Code: Use ARSA] Armadale Ball Coal (Central Coalfield) Armadale Ball Fireclay Armadale Coxrod Coal Armadale Main Coal Armadale Main Coal (Central Coalfield) Armadale Slatyband Ironstone Armadale Splint Coal Armadale Stinking Coal Armadale Upper Ball Coal Armadale Upper Cannel Coal (Central Coalfield) Armagh Group Armathwaite Dyke Armathwaite-Cleveland Dyke Armboth Dyke Armisdale Psammite [Obsolete Name and Code: Use MAAP] Armsheugh Member Armsheugh Sand and Gravel Formation Arnage Pluton Arnbath Psammite Formation Arngrove Spiculite Member Arngrove Stone [Obsolete Name and Code: Use AGSP] Arnhash Till Member Arnisdale Psammite Member Arniston Parrot Coal (Lothian) Arran Central Complex Arran Northern Granite (Inner Granite) Arran Northern Granite (Outer Granite) Arthur's Seat Volcanic Formation Arthur's Seat Volcanic Rocks [Obsolete Name and Code: Use ASV] Artificial Lagoon (Undivided) Artificial Pond or Artificial Lake Artificially modified ground Artificially Subsided Ground [Obsolete Name and Code: Use DDGR] Aruisg Psammite Formation Arun Formation Arun Member Arun River Terrace Deposits, 2 Member and Arun River Terrace Deposits, 3 Member, Undifferentiated Arun River Terrace Deposits, 3 Member and Arun River Terrace Deposits, 4 Member, Undifferentiated Arun River Terrace Deposits, 4 Member and Arun River Terrace Deposits, 5 Member, Undifferentiated Arun Terrace Deposits, 1 Member Arun Terrace Deposits, 2 Member Arun Terrace Deposits, 2a Member Arun Terrace Deposits, 2b Member Arun Terrace Deposits, 3 Member Arun Terrace Deposits, 4 Member Arun Terrace Deposits, 5 Member Arun Terrace Deposits, 6 Member Arun Terrace Deposits, 7 Member Arun Terrace Deposits, Facet 2a [Obsolete Name and Code: Use AR2A] Arun Terrace Deposits, Facet 2b [Obsolete Name and Code: Use AR2B] Arundel Sponge Beds Arvonian [Obsolete Name And Code: Use ARN] Arvonian Formation [Obsolete Name and Code: Use ARN, TWTH] Aryleive Limestone Bed Asaphus Ash Formation Ascog Member Asfordby Volcanic Formation Ashbank Sandstone Member Ashbourne Gravel Ashclough Coal (South Lancashire) Ashclough Marine Band Ashclough Marine Band [Local Name: See MTMB] Ashclough Mine [Obsolete Name and Code: Use ASHC] Ashclough Mine Coal Ashcombe Gravel Member Ashdown Beds (A) [Obsolete Code: Use ASD] Ashdown Beds (B) [Obsolete Code: Use ASD] Ashdown Beds [Obsolete Name and Code: Use ASD] Ashdown Formation Ashdown Sand [Obsolete Name and Code: Use ASD] Ashdown Sand(s) [Obsolete Name And Code: Use ASD] Ashfell Limestone Formation Ashfell Sandstone [Obsolete Name and Code: Use AFS] Ashfell Sandstone Formation Ashfield Coking Coal (Central Coalfield) Ashfield Rider Coal Ashford Beds [Obsolete Name and Code: Use EYL] Ashford Sand and Gravel Ashgate Coal (Nottingham) Ashgate Coal (South Yorkshire, Nottingham And Derby) Ashgate Leaf 1 (Ollerton) Ashgate Lower Leaf Coal (Derby) Ashgate Upper Leaf Coal (Derby) Ashgill Formation Ashgill Rocks (Undifferentiated) Ashgill Shale Formation [Obsolete Name and Code: Use AHL] Ashgill Shales [Obsolete Name and Code: Use AHL] Ashington Coal Ashington Coal (Northumberland) Ashington High Main Coal (Northumberland) [Obsolete Code: Use ASHN] Ashington High Main Coal [Obsolete Name and Code: Use ASHN] Ashness Tuff Member Ashover Coal Ashover Grit Ashover Grit (Main Bed) Ashow Formation Ashow Group [Obsolete Name and Code: Use AW] Ashprington Volcanic Formation Ashprington Volcanic Series [Obsolete Name and Code: Use AVS] Ashton Formation [Obsolete Name and Code: Use ANSH, DHLS] Ashton Great Coal (Bristol Area) Ashton Great Coal (South Lancashire) Ashton Great Mine [Obsolete Name and Code: Use AGCO] Ashton Great Mine Coal Ashton Little Coal (Bristol Area) Ashton Mudstone Member Ashton Mudstone Member And Crackington Formation (Undifferentiated) Ashton Shale Member (of Crackington Formation) [Obsolete Name and Code: Use ANSH] Ashton Shale Member [Obsolete Name and Code: Use DHLS, ANSH] Ashton Top Coal (Bristol Area) Ashton Vale Marine Band Ashton Vale Marine Band [Local Name: Use SBMB] Ashton Vale Marineband Ashy Cleugh Limestone Askham Limestone [Obsolete Name and Code: Use ASKL] Askham Limestone Member Assapol Group Assel Conglomerate [Obsolete Name and Code: Use ASC] Assel Conglomerate Member Assynt Glacigenic Formation Assynt Hornblende Microdiorite Swarm Assynt Meta-Olivine Gabbro Subswarm [Obsolete Name And Code: Use SMOG] Assynt Meta-Olivine Subswarm [Obsolete Name and Code: Use SMOG] Assynt Metapicrite Subswarm [Obsolete Name And Code: Use BMP] Assynt Porphyritic Trachyte Swarm Assynt Till Formation Assynt Vogesite Swarm Asta Spilite Group [Obsolete Name and Code: Use DBAS] Asta Spilitic Formation Asta Spilitic Formation [Obsolete Code: Use ASSP] Asta Spilitic Group [Obsolete Name and Code: Use ASSP, DBAS] Astarte Bed Astbury Formation Astbury Limestone [Obsolete Name and Code: Use BOWO] Astbury Limestone Member Astbury Sandstone Member Astbury-Limestone-Shales [Obsolete Name and Code: Use AYLS] Astell Coal (South Wales) Aston Beds [Obsolete Name and Code: Use AST] Aston Coal (Oxfordshire) Aston Limestone Formation Aston Mudstone Formation Athais Till Formation Athelstan Oolite Formation Athelstaneford Sill Atherfield Clay 'Group' [Obsolete Name and Code: Use AC] Atherfield Clay [Obsolete Name and Code: Use AC, CECL] Atherfield Clay Formation Atherfield Clay Formation And Weald Clay Formation (Undifferentiated) Atherfield Clay sensu Fitton (1847, p. 296 part of Bed 3) [Obsolete Name and Code: Use CECL] Atherfield Clay Series [Obsolete Name and Code: Use AC] Atherfield Group [Obsolete Name and Code: Use AC] Atkinson and Fordingdale Ignimbrite Group [Obsolete Name and Code: Use WLT] Atlantean Supersuite Auch Gleann Psammite Formation Auchencar Burn Sandstone Member Auchencar Burn Sandstones [Obsolete Name and Code: Use AUSA] Auchencar Burn Sandstones Formation [Obsolete Name and Code: Use ABS] Auchencar Lava [Obsolete Name and Code: Use AULA, AUSA] Auchencar Lava Member Auchencar Sandstone Formation Auchencrow Burn Formation [Obsolete Name and Code: Use AUCR] Auchencrow Burn Sandstone Formation Auchenheath Dross Coal Auchenheath Smithy Coal Auchenheath Wee Gas Coal Auchenhew Beds [Obsolete Name And Code: Use AHM] Auchenhew Mudstone Formation Auchensoul Bridge Mudstone Formation Auchensoul Limestone Formation Auchenwinsey Member Auchenwinsey Till Member Auchineden Lava Member Auchineden Lavas [Obsolete Name and Code: Use ACLA] Auchingree Four Inch Coal Auchinlea Sandstone Auchivarie Psammite Formation Auchleuchries Sand and Gravel Formation Auchlyne Formation Auchmeddon Gravel [Obsolete Name and Code: Use AMNGR] Auchmeddon Gravel Formation [Obsolete Name and Code: Use AMNGR] Auchmeddon Gravel Member Auchmeddon Member [Obsolete Name and Code: Use AMNGR] Auchmithie Conglomerate Formation [Obsolete Name and Code: Use ACO] Auchmithie Conglomerate Member Auchnacloy Sandstone Member [Obsolete Name and Code: Use ACSF] Auchnahillin Monzonite Auchnahyle Formation Auchtitench Formation [Obsolete Name and Code: Use AUC] Auchtitench Sandstone Formation Aughnacloy Sandstone Formation Aughnacloy Sandstone Member [Obsolete Name And Code: Use ACSF] Auglish Sandstone Member Auk Formation Auldearn (Park) Pluton [Obsolete Name and Code: Use AULD] Auldearn Granite Pluton Auldshields Blackband Auldshields Musselband (Central Coalfield) Auldthorns Formation Aulrothie Sandstone Member Aultbea Formation Aurora Formation Austwick Flags and Grits [Obsolete Name and Code: Use ARF] Austwick Flags And Grits [Obsolete Name And Code: Use AUF] Austwick Formation Austwick Formation And Arcow Formation (Undifferentiated) Aveley Member Aveline's Hole Limestone Avicula Ironstone Seam Avill Group [Obsolete Name And Code: Use ASS] Avill Slates And Sandstones Member Avoch Sandstone Member Avon Fifth Terrace [Deposits] [Obsolete Name and Code: Use PERT] Avon Fifth Terrace Deposits [Obsolete Name and Code: Use STRSG] Avon First Terrace [Deposits] [Obsolete Name and Code: Use BRET] Avon Fourth Terrace [Deposits] [Obsolete Name and Code: Use CRTD] Avon Group Avon Second Terrace [Deposits] [Obsolete Name and Code: Use WAT] Avon Third Terrace Deposits [Obsolete Name and Code: Use NIT] Avon Valley Formation [Obsolete Name and Code: Use AVON] Avoniel Anhydrite [Obsolete Name And Code] Avoniel Limestone Avonmouth No.1 Coal Avonmouth No.2 Coal Awre Formation [Obsolete Name and Code: Use WLLEV] Axe Valley Formation Aycliff Member [Obsolete Name and Code: Use NPCH] Aydon Shell Bed Aylesbeare Group [Obsolete Name and Code: Use AYB] Aylesbeare Mudstone Formation [Obsolete Name and Code: Use AYB] Aylesbeare Mudstone Group Aylesbury Sand Aymestry Group Aymestry Limestone Formation Aymestry Rock [Obsolete Name and Code: Use AL] Ayr Diamond Coal Ayr Ell Coal Ayr Extra Coal Ayr Forty Fathom Coal Ayr Hard Coal (Ayrshire) Ayr Jewel Coal (Ayrshire) Ayr Major Coal Ayr Thirty Six Fathom Coal Ayr Twenty Fathom Coal Ayr Twenty Three Fathom Coal Ayre Formation Ayre Lighthouse Formation Ayrshire Basanitic And Foiditic Plugs And Vents Ayrshire Bauxitic Clay [Obsolete Name and Code: Use ABC] Ayrshire Bauxitic Clay Formation [Obsolete Name and Code: Use ABC] Ayrshire Bauxitic Clay Member B-Bed Evaporite Babbacombe Slates Backet'S Copse Gravel Member Backfolds Palaeosol [Obsolete Name and Code: Use FSLCK] Bacton Green Till Member Bacton Group Bacton Member Bacton Member [Duplicate Lexicon Entry: Use BACTO] Bad An Loin Quartzite Member Bad Na H-Achlaise Ultramafic Rocks Bad Step Tuff Bad Step Tuff Member [Obsolete Name and Code: Use BDP] Badanloch Granite Sheets Badbea Breccia [Obsolete Name and Code: Use BAB] Badbea Breccio-Conglomerate Member Badcall Meta-Clinopyroxene-Norite Subswarm Badcallian (Kylesku Group) [Obsolete Name And Code] Baddinsgill Mudstone Member Baddoch Burn Dolomite [Obsolete Name and Code: Use MEDL] Baddoch Burn Limestone Member Baddoch Burn Limestone Member [Obsolete Code: Use BADL] Baddoch Burn Member [Obsolete Name And Code: See BADL] Baddoch Burn Pelite Formation Baddoch Quartzite Member Baddock Till Member Badenloch Pelite Member [Obsolete Name and Code: Use LOCE] Badenoch Group Badentinan Sand Bed Badenyon Schist And Limestone Formation Badsworth Division [Obsolete Name and Code: Use BADS] Badsworth Member Badsworth Rock Baggy And Marwood Beds [Obsolete Name And Code: Use BYS] Baggy and Marwood Slates [Obsolete Name and Code: Use BYS] Baggy Beds [Obsolete Name and Code: Use BYS] Baggy Sandstones Formation Bagh Na H-Uamha Shale [Obsolete Name and Code: Use TCDL, TCAM] Baginton Sand [Obsolete Name and Code: Use BGSG] Baginton Sand and Gravel [Obsolete Name and Code: Use BGSG] Baginton Sand and Gravel Formation Baginton-Lillington Gravel [Obsolete Name and Code: Use BGSG] Bagshot Beds [Obsolete Name And Code: Use BGS] Bagshot Beds and Bracklesham Beds (Undifferentiated) [Obsolete Name And Code] Bagshot Formation Bagshot Formation, Bracklesham Group, Barton Group, Becton Sand Formation And Chama Sand Formation (Undifferentiated) Bagshot Pebble Bed Bagshot Sands [Obsolete Name and Code: Use BGS] Bagworth Marine Band Bagworth Marine Band [Local Name: Use VDMB] Bail Hill Volcanic Group Bail Hill Volcanic Group [Obsolete Code: Use BAIL] Bailey Hill Formation Bailey Hill Formation [Duplicate Lexicon Entry: Use BAI] Bailey's Beds Baillieston Member [Obsolete Name and Code: Use BNTI] Baillieston Till Formation Baily's Hill Flint Bain Valley Formation Bakewell Formation Bala [Obsolete Name And Code] Bala Limestone [Obsolete Name and Code: Use CY] Bala Volcanic Series [Obsolete Name And Code] Balachuirn Sandstone Member Balbardie Blackband Ironstone Balbardie Gas Coal Balblair Intrusion Balby Formation Balchraggan Formation Balclatchie Beds [Obsolete Name and Code: Use PMP, BCH] Balclatchie Conglomerate [Obsolete Name And Code: Use BCH] Balclatchie Formation Balclatchie Formation, Ardwell Formation And Whitehouse Formation (Undifferentiated) Balclatchie Group [Obsolete Name and Code: Use BCH] Balclatchie Mudstones [Obsolete Name And Code: Use BCH] Balcomie Beds Balcomie Beds (Fife) [Obsolete Name and Code: Use CYD] Balcreuchan Group Balcreuchan Group (correlated with, but not named) [Obsolete Name and Code: Use BRNL] Balcreuchan Group, part of Arenig Volcanic Complex (correlated with, but no sp) [Obsolete Name and Code: Use BRNL] Balder Formation Baldernock Limestone Balderton Member [Obsolete Name and Code: Use BDTN] Balderton Sand and Gravel [Obsolete Name and Code: Use BDTN] Balderton Sand And Gravel Member Balfreish Microgranite Balgaverie Member Balgrochan Beds Baligill Limestone Member Balintober Intrusion Balintore Formation Ball Coal Ball Coal (Midlothian) Ballachulish Group [Obsolete Name and Code: Use DABH] Ballachulish Limestone [Obsolete Name and Code: Use DABL, MEDL] Ballachulish Limestone Formation Ballachulish Pluton Ballachulish Slate [Obsolete Name and Code: Use MEDS, DASL] Ballachulish Slate Formation Ballachulish Subgroup Ballachulish Subgroup And Blair Atholl Subgroup (Undifferentiated) Balladoole Formation Ballagan Beds [Obsolete Name And Code] Ballagan Cementstone Formation [Obsolete Name And Code: Use BGN] Ballagan Formation Ballagan Formation, Clyde Sandstone Formation And Strathclyde Group (Undifferentiated) Ballagan Formation, Clyde Sandstone Formation, Strathclyde Group And Clackmannan Group (Undifferentiated) Ballagan Formation, Clyde Sandstone Formation, Strathclyde Group and Lower Limestone Formation (Undifferentiated) Ballagh Limestone Member Ballanayre Slump Breccia Ballantrae Breccia Formation [Obsolete Name and Code: Use PKE] Ballantrae Complex Ballantrae Group [Obsolete Name And Code: Use BX] Ballantrae Igneous Complex [Obsolete Name and Code: Use BX] Ballantrae Igneous Series [Obsolete Name and Code: Use BX] Ballantrae Ophiolite [Obsolete Name and Code: Use BX] Ballantrae Ophiolite Complex Ballasalla Beds Ballasalla Formation [Obsolete Name and Code: Use DBH] Ballater Pluton Ballaugh Formation Ballbrook Sandstone Member [Obsolete Name and Code: Use BES] Balleich Lava Member Ballencleuch Law Granite Balleys Beds Ballinamallard Formation [Obsolete Name and Code: Use BLM] Ballinamallard Mudstone Formation Balling Coal Ballintoy Chalk Formation Ballintoy Chalk Member [Obsolete Name and Code: Use BTC] Balloch Clay Member Balloch Formation [Obsolete Name and Code: Use BOCH] Balloch Member [Obsolete Name and Code: Use BOCH] Balls Coal (South Wales) Ballyagen Formation Ballyalicock Conglomerate Formation Ballyalton Sill Ballyboley Halite Ballycastle Chalk Formation Ballycastle Chalk Member [Obsolete Name and Code: Use BCCK] Ballycastle Pellet Chalk [Obsolete Name And Code] Ballycastle Sandstone Group Ballycastle White Limestone (lower part) [Obsolete Name and Code: Use PCC] Ballycastle White Limestone (upper part) [Obsolete Name and Code: Use BCCK] Ballycraigy Plug [Obsolete Name And Code] Ballycultra Formation Ballydurnian Breccia Formation Ballygalley Head Plug Ballygawly Gneiss Ballygomartin Sill Ballygrant Formation Ballygrant Limestone [Obsolete Name and Code: Use DABG] Ballykelly Formation Ballylagan Member Ballyleighery Formation Ballyloughan Formation Ballymagarry Chalk Formation Ballymagarry Chalk Member [Obsolete Name and Code: Use BMC] Ballymaglin Shale Member Ballymartin Member Ballymastocker Formation Ballymoney Formation Ballynahone Micrite Formation Ballyness Formation Ballyrainey Sill Ballyreagh Conglomerate Formation Ballyshannon Limestone Formation Ballysteen Formation Ballytober Sandstone Formation Ballytrea Formation Ballyvoy Coals Ballyvoy Sandstone Formation Balmae Grits Balmakeith Till Member Balmeanach Silt Formation Balmoral Index Coal Balmoral Sandstone unit Balmoral Tuffite unit Balmore Marine Band Balnacraig Metabasite Member Balnagown Group Balnakiel Formation Balnakiel Group [Obsolete Name and Code: Use BNK] Bamburgh Formation Bampton Conglomerate [Obsolete Name and Code: Use LTY] Bampton Limestone Formation Bampton Limestone Formation [Duplicate Lexicon Entry: Use BPLM] Bampton Limestone Group [Obsolete Name and Code: Use BPLM] Bampton Limestones Group [Obsolete Name and Code: Use BPLM] Bampton Member [Obsolete Name and Code: Use BPLM] Banbury Coal (North Staffordshire) Banbury Rock Banchory Till Formation Banded Group Banded Group within Blair Atholl Subgroup [Obsolete Name and Code: Use CAFS] Banded Schist within Blair Atholl Subgroup [Obsolete Name and Code: Use CAFS] Banded Series within Pale Group of Blair Atholl Series [Obsolete Name and Code: Use CAFS] Bandy In Northumberland Banffshire Coast and Caithness (Albion) Glacigenic Subgroup Banffshire Coast and Caithness Glacigenic Subgroup Banffshire Coast Drift Group [Obsolete Name and Code: Use BCD] Banffshire Coast Glacigenic Group [Obsolete Name and Code: Use BCD, BCAG] Bangley Dyke Bangley Member [Obsolete Name and Code: Use BYTRC] Bangley Trachytic Member Bangor Formation Banham Beds [Obsolete Name and Code: Use BANM] Banham Member Banjaard Formation Bank Coal Bank deposits Bank Farm Coal (Wyre Forest) Bank Farm Sand and Gravel Bank Moor Limestone Bankfield East Beds Bankhead Marine Band Bankhouses Limestone Banknock Jewel Coal Banknock Lower Drumgray Coal Banknock Main Coal Banknock Shale Coal Banknock Splint Coal Banknock Upper Drumgray Coal Banks Formation Banks Group Banks Sequence [Obsolete Name and Code: Use BANKS, CONCH] Banks Subsequence [Obsolete Name and Code: Use BANKS] Bannagher Sandstone Formation Bannisdale Formation Bannisdale Slates [Obsolete Name and Code: Use BND] Bannock Coal (Cumbria) Bannockburn Lower Main Coal Bannockburn Main Coal Bannockburn Steam Coal Bannockburn Upper Main Coal Bantam Coal (Somerset) Banton [Main] Coal (Glasgow-Airdrie) Banton Blackband Coal Banton Blackband Ironstone Banton Clayband Ironstone Banton Main Coal Banton Rider Coal Banwy Member Baoileig Sill (South Arran) Baranailt Limestone Member Barbae Grits Barcelona Coal Bardahessiagh Formation Bardon 'Good Rock' [Obsolete Name and Code: Use GYA] Bardon Breccia Bardon Hill Volcanic Complex Bardsley Loom Formation Bardsley Rock Bare Coal (Warwickshire) Baren Red Group (Somerset) [Obsolete Name and Code: Use BRR] Bargan Coal (South Lancashire) Bargany Formation [Obsolete Name And Code: Use (Part Of) DYF] Bargate Beds [Obsolete Name and Code: Use BT] Bargate Formation [Obsolete Name and Code: Use BT] Bargate Member [Obsolete Name and Code: Use BT] Bargate Member Of The Sandgate Formation Bargate Sandstone Member Barham Sand and Gravel Member Bark Butts Silts Member Barkisland Flags Barkley Breccia Formation Barmouth Formation Barn Rock Member Barn Scar Sand And Silt Member Barnby Clays [Obsolete Name and Code: Use BNBM] Barnby Member Barncraig Coal (Fife) Barncroft Beck Beds Barncroft Beck Member [Obsolete Name and Code: Use BACB] Barneil Member Barnes High Sandstone Member Barnesmore Pluton Barnesmore Pluton (Phase 2) Barnesmore Pluton (Phase 3) Barness East Limestone Barney's Cut Coal (Northumberland) Barney's Cut Sandstone Barnham Silt And Clay Member Barns Ness East Limestone Barns Ness Limestone [Obsolete Name And Code: Use MIHO] Barnsley Coal Barnsley Coal (West And South Yorkshire) Barnsley Rider Coal (West And South Yorkshire) Barnsley Rock Barnstone Member Barnstone Member And Barnby Member (Undifferentiated) Barnt Green Volcanic Formation Barnt Green Volcanic Series [Obsolete Name and Code: Use BGV] Barnwell Abbey Member Barnwell Station Member Barnyards Silt Formation Baron Hill Beds [Obsolete Name and Code: Use BAH] Baron Hill Formation Baron Hill Rocks [Obsolete Code: Use BAH] Baronwood Member Baronwood Sand and Gravel Formation Barony Glen Formation Barr Beacon Beds [Obsolete Name And Code: Use HPBR] Barr Church Andesite Member Barr Group Barr Limestone [Obsolete Name and Code: Use BLZ] Barr Limestone Formation Barr Series [Obsolete Name and Code: Use BARR] Barra Formation Barra Isles Dyke Swarm Barracados Cherts Barrack Hill Andesite Member Barracks Ash Barracks Limestone Barras Conglomerate Formation [Obsolete Name and Code: Use BACO] Barras Conglomerate Member Barras Nose Beds [Obsolete Name and Code: Use BNF] Barras Nose Formation Barrasford Limestone Barren Coal Measures (Upper) [Obsolete Name and Code: Use CMSC] Barren Flagstones [Obsolete Name and Code: Use SLH] Barren Group [Obsolete Name and Code: Use SAR] Barren Measures [Duplicate Lexicon Entry: Use -2624] Barren Measures [Obsolete Name and Code: Use BME] Barren Measures Group [Obsolete Name and Code: Use WAWK] Barren Red Formation (Somerset) [Obsolete Name and Code: Use BRR] Barren Red Group [Obsolete Name and Code: Use BRR] Barren Red Measures [Obsolete Name and Code: Use UCMS] Barren Red Member (Somerset) Barrhead Grit Barrhead Main Coal Barrhill Group Barriedale Flagstones [Obsolete Name and Code: Use BDF] Barrington Beds [Obsolete Name and Code: Use BARB] Barrington Member Barrmill Dyke Barrock Top Limestone Barron's Pike Sandstone Barrow Hill Basaltic Vent Barrow Terrace Deposits Barrow Tuff Member Barroway Drove Beds Barrowmouth Mudstone Formation Barrule Formation Barrule Slates (Manx Slates) [Obsolete Name and Code: Use BRUL] Barrule Slates [Obsolete Name and Code: Use GLRN, BRUL] Barrule Slates and Slieau Managh Slates [Obsolete Name and Code: Use BRUL] Barry Harbour Limestone Formation Barshaw Sill Barton Beds [Obsolete Name and Code: Use BA, CMBS] Barton Clay [Obsolete Name and Code: Use BAC] Barton Clay Formation Barton Formation [Obsolete Name and Code: Use BA] Barton Group Barton Group, Bracklesham Group And Bagshot Formation (Undifferentiated) Barton Limestone [Obsolete Name and Code: Use BRTL] Barton Limestone Member Barton Member [Obsolete Name and Code: Use BRTL] Barton Pebble Bed [Obsolete Name And Code] Barton Sand [Obsolete Name and Code: Use BAS] Barton Sand Formation Barytes Mine Conglomerate [Obsolete Name and Code: Use BMCG] Barytes Mine Conglomerate Member Basal Andesite Sill-Complex Basal Beds [Obsolete Name and Code: Use PLMA, BKBD, SPN] Basal Beds Formation (Cumbria) Basal Breccia [Obsolete Name and Code: Use PBB] Basal Breccia and Sandstone [Obsolete Name and Code: Use HAE] Basal Cementstones [Obsolete Name and Code: Use KICM] Basal Clastics [Obsolete Name and Code: Use BYC] Basal Clastics Member Basal Conglomerate [Obsolete Name and Code: Use PSKA, TCM] Basal Grampian Division [Obsolete Name and Code: Use KNCG] Basal Gravel Basal Gravels [Obsolete Name and Code: Use MHSG] Basal Green Beds (South Wales) Basal Grit (Millstone Grit Of South Wales) [Obsolete Name And Code: Use TWR] Basal Grit (Millstone Grit) [Obsolete Name and Code: Use TCDF] Basal Grit [Obsolete Name and Code: Use TWR] Basal Grits [Obsolete Name and Code: Use TWR] Basal Grits Group [Obsolete Name and Code: Use TWR] Basal Group [Obsolete Name and Code: Use SLLA] Basal Hydraulic Limestone Member [Obsolete Name and Code: Use RVB, CML] Basal Member (Canna Lava Formation) Basal Member (Eigg Lava Formation) Basal Oil Shale [Obsolete Name and Code: Use CUD] Basal Part Of Whitehills Group [Obsolete Name and Code: Use WHYL] Basal Pelite Formation Basal Permian Breccia (South West) Basal Permian Breccia [Obsolete Name And Code: See PBB] Basal Permian Sands [Obsolete Name and Code: Use YWS] Basal Permian Sands Formation Basal Permian Sandstone Basal Permian Yellow Sands [Obsolete Name and Code: Use YWS] Basal Quartz Sandstone Formation Basal Quartzite [Obsolete Name and Code: Use BAQ] Basal Quartzite Member Basal Sand [Obsolete Name and Code: Use BROM] Basal Sand And Gravel Basal Sand Bed [Obsolete Name and Code: Use BROM] Basal Sandstone [Obsolete Name and Code: Use DRWN] Basal Sandstone Unit [Obsolete Name and Code: Use VIFM] Basal Shales [Obsolete Name and Code: Use PANT] Basal Shell Bed [Obsolete Name and Code: Use POCH] Basal unit of Sandend Group [Obsolete Name and Code: Use SNDL] Basalanhydrit Formation Base Bed Member Basement Bed [Obsolete Name and Code: Use GLML] Basement Beds (Group) [Obsolete Name and Code: Use MASA] Basement Beds (North Wales) Basement Beds (North West) [Obsolete Name and Code: Use MASA] Basement Beds (Northern Pennines) [Obsolete Name and Code: Use MASA] Basement Beds (Of Dudley) Basement Beds [Obsolete Name and Code: Use WAR, HEY, BRCT, BABE, LFSB, LLW, DELA, FRM, PLT, FRFA, PFLD, DDC] Basement Beds Formation [Obsolete Name And Code: See Supplementary Information] Basement Breccia (Shetland) Basement Conglomerate (Anglesey) [Obsolete Name And Code: Use LGY] Basement Conglomerate (North West) Basement Conglomerate [Obsolete Name and Code: Use LNCO, BABE] Basement Formation (Pars) [Obsolete Name and Code: Use DDC] Basement Formation [Obsolete Name and Code: Use BPLM] Basement Or Bearing Grit [Obsolete Name And Code: See BGRT] Basement Pebble Bed (of the Upper Bagshot Beds) [Obsolete Name and Code: Use STHP] Basement Sands of the Upper Glauconite Beds [Obsolete Name and Code: Use CLLW] Basic Tuff (Lydol Hole) [Part Of UO] Basic Tuffs With Basalts (Uriconian Group) [Obsolete Name And Code: Part Of UO] Basic Volcanic Group [Obsolete Name and Code: Use BGL] Basin peat Basket Shell Bed Baslow Coal (Derbyshire) Bass Coal (South Staffordshire) Bass Rock Plug Bassenthwaite Diorite Intrusions Bassey Mine [Obsolete Name and Code: Use BAMC] Bassey Mine Coal Bassey Mine Coal (Lancashire) Bassey Mine Coal (North Staffordshire) Bassingfield Sand and Gravel [Obsolete Name and Code: Use BASG] Bassingfield Sand And Gravel Member Bassingham Fen Member [Obsolete Name and Code: Use FULB] Bassy Coal Bassy Coal (South Lancashire) Bassy Mine [Obsolete Name and Code: Use BMCO] Bassy Mine Coal Bastard Limestone [Obsolete Name and Code: Use CCL] Bastion Steps Beds Bastions Coal (South Lancashire) Baston Burn Group [Obsolete Name and Code: Use BAST] Baston Burn Lava Member Batavier Formation Batch Volcanic Beds [Obsolete Name and Code: Use BV] Batch Volcanic Member Batch Volcanic Rocks [Obsolete Name and Code: Use BV] Batch Volcanics [Obsolete Code: Use BV] Batchie (Blackband) Ironstone Batchie Blackband Ironstone Batchie Coal (Central Coalfield) Bath Freestone [Obsolete Name and Code: Use BHO] Bath Lodge Coal (Ballycastle, Northern Ireland) Bath Lodge Lava Formation Bath Oolite [Obsolete Name and Code: Use BHO] Bath Oolite Member Bath Oolite Member and Corsham Limestone Formation (Undifferentiated) Bath Stone and Lower Rags [Obsolete Name and Code: Use AOL] Bathampton Down Member Bathampton Member Bathgate Group Bathgate Hills Volcanic Formation Bathgate Jewel Coal Bathgate Lavas [Obsolete Name and Code: Use BHV] Bathgate Volcanic Formation [Obsolete Name and Code: Use BHV] Bathonian And Callovian Rocks (Undifferentiated) Bathonian Rocks (Undifferentiated) Batty Mine Coal (North Staffordshire) Baulking Sand Member Bav3: Bristol Avon River Terrace Deposits, 3 Member Bay Coal Bay Marine Band [Local Name: Use CAMB] Bay Member Bay of Stoer Formation Bay Sandstone Member [Obsolete Name and Code: Use SABA, SBSM] Bay Vein Bays Leap Coal (Northumberland And Durham) Bayston-Oakswood Formation Bayston-Oakswood Group [Obsolete Name and Code: Use BAGP] Bayston-Oakwood Formation [Obsolete Code: Use BAGP] Beach and Tidal Flat Deposits (Undifferentiated) Beach deposits Beach dune sand Beach Rock Beachy Head Beds Beachy Head Marls Beachy Head Sponge Beds Beacon Hill Acid Group [Obsolete Name and Code: Use OF] Beacon Hill Flags Beacon Hill Formation Beacon Hill Sand And Gravel Member Beacon Hill Tuff Formation [Obsolete Name and Code: Use BHF, CMBH] Beacon Hill Volcanic Formation Beacon Hill Volcanic Group [Obsolete Name and Code: Use BHVF] Beacon Limestone Formation Beacon Tuff Member Beacon Tuffs Member [Obsolete Name and Code: Use BCT] Beaconsfield Flags [Obsolete Name and Code: Use BHF] Beaconsfield Gravel Beaconsfield Member Beadnell Coal (Northumberland) Bealbury Formation Bealesmill Sandstone Formation [Obsolete Name and Code: Use BEAL] Bealsmill Formation Bealsmill Sandstone Formation [Obsolete Name and Code: Use BEAL] Beannach Metapicrite Subswarm Beannan Buidhe Member Bearing Grit Bearreraig Sandstone Formation Bearreraig Sandstone Series [Obsolete Name and Code: Use BEAS] Bearsmouth Or Thorneyburn Coal Bearstone Sandstones [Obsolete Name And Code: Use HEY] Beatrice Formation Beauly Member Beauly Silt Formation Beaumont Coal Beaumont Coal (Northumberland) Bebside Bank Seam (D/De1) Beccles Formation Beck Bottom Stone Coal (West Yorkshire) Beck Wood Tuff Member Beckford Terrace Deposits Beckingham Member Becklees Sandstone Formation Beckley Sand Member Beckley Sand, Temple Cowley and Arngrove Spiculite Members [Obsolete Name and Code: Use KTON] Beckley Sands [Obsolete Name and Code: Use BYSA] Becton Bunny Member Becton Sand [Obsolete Name and Code: Use BECS] Becton Sand Formation Becton Sand Formation And Chama Sand Formation (Undifferentiated) Bed 1 [Obsolete Name and Code: Use SYCN] Bed 3 (lower part of Crovie Group) [Obsolete Name and Code: Use CHST] Bed 3 (Upper Part) of Crovie Group [Obsolete Name and Code: Use GMSA] Bed 3 [Obsolete Name and Code: Use PYDN] Bed 4 [Obsolete Name and Code: Use PNN] Bed 4 Oolite Group [Obsolete Name and Code: Use BLO] Bed 6 (part of Marker Beds) [Obsolete Name and Code: Use DDLM] Bed A and lower part of Bed B [Obsolete Name and Code: Use RSVR] Bed A, excluding upper part [Obsolete Name and Code: Use RSVR] Bed B [Obsolete Name and Code: Use CKRI, WKH] Bed C [Obsolete Name and Code: Use WLN, CKRI, TDH] Bed D [Obsolete Name and Code: Use HSW] Bed F [Obsolete Name and Code: Use LAR] Bedchester Sands Member Bedded agglomerate of Greenan Castle [Obsolete Name and Code: Use GCP] Bedded Pyroclastic Formation Bedhampton Marls (One) Bedhampton Marls (Three) Bedhampton Marls (Two) Bedlam Gill Coal (Cumbria) Bedminster Great Coal (Bristol Area) Bedminster Little Coal (Bristol Area) Bedminster Toad Coal (Bristol Area) Bedminster Top Coal (Bristol Area) Bedrock (pre-Carboniferous rocks) at or near surface [see descriptions for limitations of use] Bedrock (sedimentary cover) at or near surface [see descriptions for limitations of use] Bedrock at or near surface [see descriptions for limitations of use] Bedrock Geology Not Mapped [For Digital Map Use Only] [Obsolete Name and Code: Use BEDNM] Bedrock Theme Not Mapped [For Digital Map Use Only] Bedruthan Formation Bedruthan Slates Beds 1 and 2 in Crovie Group [Obsolete Name and Code: Use DCST] Beds 5 and 6 [Obsolete Name and Code: Use COFYD] Beds at A, A1 and lower part of B [Obsolete Name and Code: Use RSVR] Beds at C [Obsolete Name and Code: Use CKRI] Beds at D to E [Obsolete Name and Code: Use GHD] Beds at D to H [Obsolete Name and Code: Use WLN] Beds at F [Obsolete Name and Code: Use LAR] Beds at G and H [Obsolete Name and Code: Use BDD] Beds At J To M [Obsolete Name and Code: Use HSW] Beds C To H Beds C, E [Obsolete Name and Code: Use BNY] Beds D to E [Obsolete Name and Code: Use GHD] Beds D to H [Obsolete Name and Code: Use WLN] Beds G and H [Obsolete Name and Code: Use BDD] Beds included in 'Millstone Grit' [Obsolete Name and Code: Use HGP] Beds of 'Findon Group' [Obsolete Name and Code: Use GDC] Bee Coal Bee Low Formation [Obsolete Name and Code: Use BLL] Bee Low Group [Obsolete Name and Code: Use BLL] Bee Low Limestone Formation Bee Low Limestones [Obsolete Name and Code: Use BLL] Bee Low Limestones Formation (Apron-Reef) Bee Low Limestones Formation (Knoll-Reef) Beechcliff Sandstone Beechwood Conglomerate Bed Beechwood Conglomerate Bed [Obsolete Name and Code: Use BCWC] Beeding Beds Beeding Flints Beeding Hardgrounds Beeding Marl Beefie Coal (Lothian) Beenham Grange Gravel [Obsolete Name and Code: Use BGGR] Beenham Grange Gravel Member Beenham Stocks Gravel [Obsolete Name and Code: Use BSGR] Beenham Stocks Gravel Member Beer Head Limestone Formation Bees Nest Member Beeson Grits Formation Beeston Chalk Member Beeston Coal (West Yorkshire) Beeston Regis Formation Beeston Rider Coal (West Yorkshire) Beeston River Deposits [Obsolete Name and Code: Use BDTN] Beeston River Terrace Deposits [Obsolete Name and Code: Use BDTN] Beeston Sand and Gravel [Obsolete Name and Code: Use BSSG] Beeston Sand And Gravel Member Beeston Terrace [Obsolete Name and Code: Use BSSG, ALSG] Beetle Bed Beggar Coal (Midlothian) Bein Nan Coireag Conglomerate Beinn A'Chaisteil Quartzite Formation Beinn A'Ghlo Graphitic Schist [Obsolete Name and Code: Use MEDS] Beinn A'Ghlo Quartzite Beinn A'Ghlo Quartzite Formation [Obsolete Name and Code: Use MEDQ] Beinn A'Ghlo Schist Beinn A'Ghlo Transition Formation Beinn A'Ghlo Transition Formation And Glen Clunie Graphitic Schist Formation (Undifferentiated) Beinn Airein-An Stac Member Beinn An Dothaidh Formation Beinn An Dubhaich Granite (Skye Eastern Red Hills Centre: Phase 3) Beinn An Dubhaich Limestone Beinn An Leathaid Granodiorite Intrusion Beinn An Tuim Striped Formation Beinn an Uain Till Formation Beinn Bheula Schist [Obsolete Name and Code: Use DCBB] Beinn Bheula Schist Formation Beinn Bhreac Member Beinn Bhreac Psammite [Obsolete Name and Code: Use BBPS] Beinn Bhreac Psammite Formation Beinn Buidhe Older Quartz-Gabbro Intrusion Beinn Chaisgidle (Centre 2) Suite Beinn Churalain Quartzite Beinn Deag Mhor Granite (Western Red Hills Centre: Phase 5) Beinn Donn Quartzite Formation Beinn Dorain Semipelite Formation Beinn Edra Formation Beinn Edra Group [Obsolete Name and Code: Use BEDRA] Beinn Gaire Psammite Member Beinn Iadain Mudstone Formation Beinn Iaruinn Quartzite Formation Beinn Leamhain Psammite Formation Beinn Mheadhoin Pebbly Psammite Formation Beinn Na Cro Gabbro (Skye Eastern Red Hills Centre) Beinn Na Cro Granite (Skye Eastern Red Hills Centre: Phase 2) Beinn na Leac Sandstone Member Beinn Na Seamraig Formation Beinn Na Seamraig Grits [Obsolete Name and Code: Use TBS] Beinn Nan Ord Gabbro Ring-Dyke Beinn Totaig Formation Beinn Udlaidh Quartzite Formation Beith Lava Member Beith Lavas [Obsolete Name and Code: Use BELA] Belah Dolomite Beldin Gill Ganister Beldin Gill Ganister Formation [Obsolete Name and Code: Use BEG] Beldorney Pelite Formation Belemnite Beds [Obsolete Name and Code: Use BM] Belemnite Marl Member Belemnite Marls [Obsolete Name and Code: Use BM, PLMA] Belemnite Sands Member Belemnitiferous and Micaceous Marls (upper part) [Obsolete Name and Code: Use DICL] Belfast Group Belfast Harbour Evaporite Formation Belfast Marls Formation Belfast Marls Member [Obsolete Name and Code: Use BLFM] Belhaven Point Vent Belhelvie Basic Intrusion Belhelvie Pluton Bell Crags Breccia Member Bell Crags Member [Obsolete Name and Code: Use BCR] Bell Pit Bell Pit [Duplicate Lexicon Entry: Use WMBP] Bell's Hill and Howden Burn Group [Obsolete Name and Code: Use BHHB, TDH] Bell's Hill and Howden Burn Volcanic Formation [Obsolete Name and Code: Use BHHB] Bell's Hill Volcanic Member Bellavally Formation Belle Tout Beds Belle Tout Marls (One) Belle Tout Marls (Three) Belle Tout Marls (Two) Bellfield Conglomerate Bed Belling Limestone Bellingham Coal Bellingham Coal (Northumberland) Bellman Limestone Member Bellmoor Member Bellochantuy Bay Formation Bellringer Coal (North Staffordshire) Bellscamphie Till Formation Bellshill Clay Member Bellshill Formation [Obsolete Name and Code: Use BILL] Bellside Coal (Glasgow; Central Coalfield) Bellside Ironstone (Central Coalfield) Bellyhack Quartzite Member Belper Grit Belper Lawn Coal (Leicester, Nottingham, Derby) Belsay Dene Coal (Northumberland) Belsay Dene Limestone Beltiboy Coal (Dungannon) Belton Brae Vent Belton Grain Vein Belton Sand And Gravel Belvoir Limestone Formation Bembridge Beds Bembridge Limestone [Obsolete Name and Code: Use BEL] Bembridge Limestone Formation Bembridge Marls [Obsolete Name and Code: Use BMBG] Bembridge Marls Member Bembridge Oyster Beds Bembridge Raised Beach [Obsolete Name and Code: Use BEMRB] Bembridge Raised Beach Member Ben A Caillich Granite (Skye Eastern Red Hills: Phase 5) Ben Aian Quartzite [Obsolete Name and Code: Use BAQU] Ben Aigan Quartzite [Obsolete Name And Code: Use BAQU] Ben Aigan Quartzite Member Ben Bowie Lava Member Ben Challum Quartzite Formation Ben Dorrery Conglomerate Member Ben Dubhain Breccia And Conglomerate Ben Eagach Schist [Obsolete Name And Code: Use BESC] Ben Eagach Schist Formation Ben Griam Conglomerate Member Ben Griam Lower Arkose [Obsolete Name And Code: Use BGCON] Ben Griam Lower Conglomerate [Obsolete Name And Code: Use BGCON] Ben Griam Upper Arkose [Obsolete Name And Code: Use BGCON] Ben Griam Upper Conglomerate [Obsolete Name And Code: Use BGCON] Ben Hiant Breccia Member Ben Hiant Intrusion Ben Hiant Pitchstone Sheet-Swarm Ben Hiant Porphyritic Dolerite Intrusion Ben Hope Sill Suite Ben Killilan Psammite Member Ben Lawers Schist [Obsolete Name and Code: Use BLAS] Ben Lawers Schist [Obsolete Name And Code: Use BLAS] Ben Lawers Schist Formation Ben Ledi Grit Formation Ben Ledi Grits [Obsolete Name and Code: Use ARES, CISA, LDBU] Ben Loyal Intrusion Ben Lui Schist [Obsolete Name And Code: Use BLUS] Ben Lui Schist Formation Ben Lundie Formation Ben More Lava Formation Ben Nevis Complex Ben Nevis Complex (Inner Granite) Ben Nevis Complex (Marginal Intrusion) (Pyroxene Diorite To Granodiorite) Ben Nevis Complex (Marginal Intrusion) (Quartz Diorite) Ben Nevis Complex (Outer Granite) Ben Nevis Dyke Swarm Ben Nevis Volcanic Formation Ben Nevis Volcanic Series [Obsolete Name And Code: See BNVO] Ben Rinnes Pluton Ben Rinnes Pluton (Phase 1) Ben Rinnes Pluton (Phase 2) Ben Rinnes Pluton (Phase 3) Ben Rinnes Pluton (Phase 4) Ben Stumanadh Intrusion Ben Suardal Limestone [Obsolete Name and Code: Use BSLL] Ben Suardal Member Ben Vuirich Pluton Ben Wyvis Pelite [Obsolete Name and Code: Use BWYP] Ben Wyvis Pelite Formation Ben Wyvis Pelitic Schist [Obsolete Name and Code: Use BWYP] Ben Wyvis Psammite [Obsolete Name and Code: Use GAPS] Benan Conglomerate Formation Benarth Grits And Flags Benbulben Shale Formation Benburb Group Benburb Lignite [Obsolete Name and Code: Use BNBL] Benburb Mudstone Member Bench Coal Bench Coal (Warwickshire) Bench Thin Coal (Warwickshire) Benches Coal (South Staffordshire) Bencliff Grit [Obsolete Name and Code: Use BFG] Bencliff Grit Member Bencliff Grit Series [Obsolete Name and Code: Use BFG] Bencroy Shale Formation Benglog Volcanic Formation Benhar Coal Benholm Clay Formation Benigarth Mica-Schist (?Formation) Bennachie Pluton Bennan Intrusion (South Arran) Bennane Lea Breccia Member Benscliffe Agglomerate [Obsolete Name and Code: Use CMBA, BENS] Benscliffe Breccia Member Benscliffe Breccia Member [Obsolete Code: Use CMBA] Bensham Bensham Coal (Northumberland) Benthall Beds [Obsolete Name and Code: Use BEB] Benthall Member Bentinck Coal (Northumberland) Bentleyford Shales Formation Benton Series [Obsolete Name and Code: Use PBV] Benton Volcanic Group Benton Volcanic Series [Obsolete Name and Code: Use PBV] Bents Fireclay Beoch Musselband Beoil Banded Schist [Obsolete Name and Code: Use DUNS] Beoil Quartzite [Obsolete Name and Code: Use BEOQ] Beoil Quartzite Formation Beoil Schist [Obsolete Name and Code: Use BEOS] Beoil Schist Formation Beoil Schist Formation And Meall Dubh Striped Pelite Formation (Undifferentiated) Beragh Granite Beresford Seam Berkshire Oolite "Series" [Obsolete Name And Code: See BYSA] Berkshire Oolite Series [Obsolete Name and Code: Use BYSA] Berkshire Oolite Series and Osmington Oolite Series [Obsolete Name and Code: Use STOU] Berllan Beds Berllan Formation [Obsolete Name and Code: Use BER] Bernisk Glen Conglomerate Formation [Obsolete Name And Code] Berriedale Conglomerate Berriedale Flagstone Formation Berriedale Sandstone Formation Berriedale Sandstone Group [Obsolete Name And Code: Use BDSA] Berriedale Sandstones [Obsolete Name and Code: Use BDSA] Berry Head Member Berry Member [Obsolete Name and Code: Use LCB] Berry Slade Formation Berryhills Coal (Glasgow Area; Central Coalfield) Berryhills Limestone Berryley And Hardslacks Members Of Camp Fauld Formation Of Bowen (1999) Berryley Peat Bed Berw Shear Zone Berwick Limestone Beryl Formation [Obsolete Name and Code: Use HUGI] Bessygill Limestone Best Coal (Coalbrookdale) Beta Coal (North Wales) Beta Rider Coal (North Wales) Better Bed Band Coal (West Yorkshire) Better Bed Coal (West And South Yorkshire) Better Bed Fireclay Bettisfield Formation [Obsolete Name and Code: Use PCM] Betton Beds [Obsolete Name and Code: Use BET] Betton Member [Obsolete Name and Code: Use BET] Betton Shale Formation Betton Shale Formation [Duplicate Lexicon Entry: Use BET] Betton Shale Formation And Meadowtown Formation (Undifferentiated) Bettshanger L Coal (Kent) Bettws Four Feet Coal (South Wales) Bettws Mill Tuff Member Bettws Mudstone Formation Bettyhill Formation Bettyhill Suite Beul Lama Sgorr Member Beverkae Limestone Bewcastle Beds [Obsolete Name and Code: Use BWCB] Bewcastle Member Bewerley Shales Beyrichoceras Hodderense Bed [Obsolete Name and Code: Use BOH] Bharradail Phyllite Member Bheinn Bhreac Member [Obsolete Name and Code: Use TCAS] Bickerton Moraines Formation [Obsolete Name And Code: Use ESKRM] Biddenham Member Bidean Nam Bian Andesite Member Bideford Formation Bideford Group [Obsolete Name and Code: Use BFF] Bielby Peat Bed Bielby Sand Member Bifidus Beds [Obsolete Name and Code: Use BFDS] Bifidus Shales [Obsolete Name and Code: Use ABM] Bifidus Slate Formation Bifidus Slate Formation and Murchisoni Beds [Undifferentiated] [Obsolete Name and Code: Use BFMB] Bifidus Slates [Obsolete Name and Code: Use CREN, BFDS] Big Coal (Somerset) Big Coal (South Wales) Big Coal [In Part] Big Coal [South Wales Coalfield] Big Drum Coal (Lanarkshire) Big Flint Coal (Coalbrookdale) Big Flint Rock Big Mine Coal Big Rider Coal (South Wales) Big Rock Coal (South Wales) Big Smut Coal (Goyt Trough) Big Vein [Obsolete Name and Code: Use BIGC] Big Vein Coal (South Wales) Biggar Volcanic Formation Bigholms Burn Peat Bed Bighouse Formation Bighouse Limestone Member [Obsolete Name and Code: Use GLB] Bighouse Sandstone Formation [Obsolete Name And Code: See BIGH] Bighouse Sandstone Formation and lower part of Sandside Sandstone Formation [Obsolete Name and Code: Use BIGH] Biglees Hill Sill Bilinguites Bilinguis Marine Band [1 Of 3] Bilinguites Bilinguis Marine Band [2 Of 3] Bilinguites Bilinguis Marine Band [3 Of 3] Bilinguites Bilinguis Marine Band [Obsolete Code: Use R2B1] Bilinguites Bilinguis Marine Band [Obsolete Code: Use R2B2] Bilinguites Bilinguis Marine Band [Obsolete Code: Use R2B3] Bilinguites Bilinguis Marine Band [See Also: R2B1 R2B2 R2B3] Bilinguites Eometabilinguis Marine Band Bilinguites Eometabilinguis Marine Band [Obsolete Code: Use R2B4] Bilinguites Gracilis Marine Band Bilinguites Gracilis Marine Band [Obsolete Code: Use R2A1] Bilinguites Metabilinguis Marine Band Bilinguites Metabilinguis Marine Band [Obsolete Code: Use R2B5] Bilinguites Superbilinguis Marine Band Bilinguites Superbilinguis Marine Band [Obsolete Code: Use R2C1] Billingham Anhydrite Formation Billy Coal (South Staffordshire) Bilsdean Sandstone Bilston Burn Limestone [Obsolete Name And Code: Use SHLS] Bilston Rock (South Staffordshire) Bilton Coal Bilton Coal Beds Bin Coal (South Lancashire) Bin Down Formation Bin Mine [Obsolete Name and Code: Use BNCO] Bin Mine Coal Bin Mountain Sandstone Formation Bincombe Mudstone Member [Obsolete Name and Code: Use RID] Bindon Sandstone Member Binds Stone (South Staffordshire) Bingley Bog Formation Binnein Quartzite [Obsolete Name and Code: Use DABQ] Binnein Quartzite Member Binnein Schist [Obsolete Name and Code: Use DABS] Binnein Schist Member Binnend Limestone Binnend Sandstone Binnend Sandstone Member [Obsolete Name and Code: Use BINS] Binny Craig Sill Binny Sandstone Binsey Formation [Obsolete Name And Code: Undifferentiated Part Of EVG] Bioclastic sand deposits Biological deposits Biotite-Quartz-Gneiss Of Sark Birch Sandstone Member Birchenwood Coal Birchlaw Limestone Birchwood Semipelite Formation Birdlip Limestone Formation Birdoswald Limestone Group [Obsolete Name And Code: Use TYLS] Birdsall Calcareous Grit Member Birdshill Limestone Birdwell Rock Birgidale Formation Birk Fell Group [Obsolete Name and Code: Use SCW] Birk Riggs Formation Birkby Fell Andesite Member Birkby Fell Member [Obsolete Name and Code: Use BKB] Birkdale Limestone Birkenhead Sandstone Formation Birker Fell Andesite Formation Birker Fell Andesite Group [Obsolete Name and Code: Use BFA] Birkfield Limestone Birkhill Shale Formation Birkhill Shales [Obsolete Name and Code: Use BKSH] Birky Cleugh Limestone Birnam Grit [Obsolete Name And Code: Use BSAG] Birnam Slate [Obsolete Name And Code: Use BSAG] Birnam Slate And Grit Formation Birnbeck Limestone Formation [Obsolete Name And Code: Use HTL] Birnie Gravel Formation Birrenswark Lavas [Obsolete Name And Code: Use BIRV] Birrenswark Volcanic Formation Birrenswark Volcanic Group [Obsolete Name and Code: Use BIRV] Birstall Member Birstall Rock Birstall Sand and Gravel [Obsolete Name and Code: Use BISG] Birstall Terrace [Obsolete Name and Code: Use BISG] Birtley Limestone Bisat Group Biscathorpe Sand And Gravel Bishop's Frome Limestone Member Bishop's Quarry Beds [Obsolete Name and Code: Use CFML] Bishop's Quarry Limestone Formation [Obsolete Name And Code: Use CFML] Bishopbriggs Sandstone Bishopston Formation [Obsolete Name and Code: Use BISHM] Bishopston Mudstone Formation Bittadon Tuff Bed Bitter Beck Formation Bla-Bheinn Member Black (Aberdo) Limestone [Obsolete Name And Code: Use TLB] Black And White Coal (South Lancashire) Black And White Mine Coal Black and White Mines [Obsolete Name and Code: Use BAWC] Black Band Coal (North Staffordshire) Black Band Coal (South Yorkshire) Black Band Formation [Obsolete Name and Code: Use BBG] Black Band Ironstone Member Black Band Member Black Bass Coal (North Staffordshire) Black Bed Coal (North Wales) Black Bed Coal (West Yorkshire) Black Bed Ironstone (West Yorkshire) Black Cliff Coal (Milford, South Wales) Black Cliff Vein [Obsolete Name and Code: Use BCCO] Black Coal (Bristol Area) Black Coal (South Lancashire) Black Coal (South Wales) Black Coal [South Wales Coalfield] Black Cock Beds [Obsolete Name and Code: Use BCB] Black Cock Formation Black Down Sandstone Group [Obsolete Name and Code: Use CKF] Black Hill Intrusion [Obsolete Name and Code: Use BKHI] Black Hill Laccolith Black Isle Sandstone Group Black Law Plug (Greenock) Black Law Vent And Plug (Jedburgh) Black Lias [Obsolete Name and Code: Use OB] Black Limestone (Isle Of Man) Black Limestone [Obsolete Name and Code: Use TLB] Black Limestones And Shales Black Marl [Obsolete Name and Code: Use BVM, SHWB] Black Metal Coal (Cumbria) Black Metals [Obsolete Name and Code: Use BKME] Black Metals Marine Band Black Metals Marine Band [Local Name: See HTMB] Black Metals Member Black Mine [Obsolete Name and Code: Use BMIC] Black Mine Coal Black Mount Group [Obsolete Name and Code: Use BMLA] Black Mount Lava Member Black Mountain Shale Member Black Neuk Member Black Nore Beds Black Nore Sandstone (Jurassic) Black Nore Sandstone Formation Black Park Gravel Member Black Rake Coal (Nottingham) Black Rock Dolomite [Obsolete Name and Code: Use FPL] Black Rock Dolomite Formation [Obsolete Name And Code: See BRL] Black Rock Group [Obsolete Name And Code: Use BRL] Black Rock Limestone [Obsolete Name and Code: Use FPL, BHL] Black Rock Limestone Formation [Obsolete Name and Code: Use BRL] Black Rock Limestone Subgroup Black Rock Subgroup And Gully Oolite Formation (Undifferentiated) Black Rocks Sill Black Schist and Chert Black Shale And Chert Black Shale And Chert "Series" (A) [Obsolete Name And Code] Black Shale And Chert "Series" (B) [Obsolete Name And Code] Black Shale and Margie Grit [Obsolete Name And Code: Use MARG] Black Shales [Obsolete Name and Code: Use WBY] Black Shales And Conglomerates Black Shales of Malvern [Obsolete Name and Code: Use WOA] Black Shelly Boulder Clay [Obsolete Name and Code: Use BECL] Black Shelly Till [Obsolete Name and Code: Use BECL] Black Slate and Chert [Obsolete Name and Code: Use BLSL] Black Slates Of Dolwyddelan [Obsolete Name And Code: Use NOG] Black Slates of Skiddaw [Obsolete Name and Code: Use KST] Black Stockarton Moor Complex [Obsolete Name and Code: Use BSTM] Black Stockarton Moor Subvolcanic Complex Black Top Coal Black Vein Coal (South Wales) Black Ven Beds [Obsolete Name and Code: Use BVM] Black Ven Marl Member Black Ven Marls [Obsolete Name and Code: Use BVM] Blackband Coal (New Cumnock) Blackband Coal (South Wales) Blackband Group [Obsolete Name and Code: Use BBG] Blackband Lingula Band Blackband Marine Band Blackberry Bank Formation Blackbrook Beds [Obsolete Name and Code: Use CBK] Blackbrook Formation [Obsolete Name and Code: Use CBK] Blackbrook Group Blackbrook Reservoir Formation Blackbrook Series [Obsolete Name and Code: Use CBK] Blackbyre Coal (Glasgow; Central Coalfield) Blackbyre Limestone Blackchapel Coal (Lothian) Blackcleugh Limestone Blackclose Coal Blackclose Coal (Rothbury Area) [Obsolete Name And Code: Use MOOR] Blackcraig Formation Blackcraig Formation And Galdenoch Formation (Undifferentiated) Blackford Hill Member Blackhall Colliery Formation Blackhall Estheria Band Blackhall Formation [Obsolete Name] Blackhall Limestone Blackhall Member Blackhall Till Formation Blackheath Beds [Obsolete Name and Code: Use CHGR, BLB] Blackheath Member Blackheath Pebble Member [Obsolete Name and Code: Use BLB] Blackhill Coal (Northumberland) Blackhills Sand and Gravel Formation Blackmine Coal (North Staffordshire) Blackmires Limestone Blacko Marine Band Blackpool Mudstone Member Blackrock Grit Formation Blackrock Marl Blackshale And Ashgate Coal (Vale Of Belvoir) Blackshale Coal (South Yorkshire, Nottingham And Derby) Blackshale Lower Leaf Coal (Derby) Blackshale Sill Blackshale Upper Leaf Coal (Derby) Blackshale/Ashgate Group (Of Coals) (Nottingham) Blackslee Dyke [Obsolete Name And Code] Blackstokes Limestone Formation Blackstone (Jurassic) Blackstone (Shropshire) Blackstone Coal (Coalbrookdale) Blackstone Coal (Stoke) Blackstone Edge Sandstone Blackstone Marine Band Blackstone Marine Band [Local Name: See MTMB] Blackstones Band Igneous Complex Blacktongue Coal Blackwater Formation Blackwater Hollow Gravel Member Blackwater Limestone Formation Blackwater Pluton Blackwood Beds [Obsolete Name And Code: Use (Part Of) DYF] Bladon Beds and Kemble Beds [Obsolete Name and Code: Use BLAD] Bladon Member Blae Pot Coal Blae Pot Limestone Blaeberry Coal Blaeberry Formation Blaen Eidda Member [Obsolete Name And Code: Part Of CEI] Blaen Myherin Mudstones Formation Blaen Onnen Oolite [Obsolete Code: Use BLO] Blaen Onnen Oolite Formation Blaen Y Cwm Beds [Obsolete Name and Code: Use BCSH] Blaen-Y-Cwm Shale Formation Blaen-Y-Glyn Formation Blaguegate Yard Coal Blair Atholl Dark Limestone and Dark Schist [Obsolete Name and Code: Use GBSC] Blair Atholl Dark Limestone And Dark Schist Formation Blair Atholl Series [Obsolete Name and Code: Use DABA, DABH] Blair Atholl Subgroup Blair Flags and Shales [Obsolete Name and Code: Use BLRS] Blair Hill Tuff Member Blair Shale Formation Blair Shales [Obsolete Name and Code: Use BLRS] Blairdaff Moraine Formation Blairfindy Limestone Member Blairgowrie Sandstone Formation [Obsolete Name And Code: See SCN] Blairhall Blackband Ironstone Blairhall Main Coal Blairhall Main Coal (Cowdenbeath) Blairhall Main Coal (Fife) Blake Brow Breccia Member Blake Brow Member [Obsolete Name and Code: Use BLBR] Blakefell "Mudstone" [Obsolete Name and Code: Use KST] Blakeney Formation Blakeney Valleys Formation Bland Coal (South Lancashire) Blandford Chalk Member [Obsolete Name and Code: Use SECK, NCK] Blane Water Formation [Obsolete Name and Code: Use BLAW] Blane Water Silt Formation Blanket bog peat Blanket head (regolith) [Obsolete Name and Code: Use RLITH] Blanket head [Obsolete Name and Code: Use RLITH] Blargie Quartzite Member Blatchford Sand Blaven Granite (Srath Na Creitheach Centre) Blbc Blocking Coal (West Yorkshire) Blea Wyke Beds [Obsolete Name and Code: Use BW] Blea Wyke Sands [Obsolete Name and Code: Use BW] Blea Wyke Sandstone Formation Blea Wyke Series [Obsolete Name and Code: Use BW] Bleadon Member Bleak Down Gravel Member Bleawath Formation [Obsolete Name and Code: Use BLEA] Bleawath Tuff Formation Blelham Peat Formation Blenfire Coal (South Lancashire) Blenfire Mine [Obsolete Name and Code: Use BLEN] Blenfire Mine Coal Blenfire Rock Blengdale Glacigenic Formation Blengdale Tuff Formation Blidworth And Top Hard Coal (Vale Of Belvoir) Blidworth Coal (Nottingham) Bligh Bank Formation Blind Beck Sandstone Formation [Obsolete Name and Code: Use BBKS] Blind Beck Sandstone Member Blind Cove Member [Obsolete Name and Code: Use BLCV] Blind Cove Sandstone Member Blind Rock Dyke Blisco Formation [Obsolete Name and Code: Use BCO] Blisco Member [Obsolete Name and Code: Use BCO] Blisco Sandstone Member Blisworth Clay Formation Blisworth Clay Member [Obsolete Name and Code: Use BWC] Blisworth Limestone [Obsolete Name and Code: Use WHL] Blisworth Limestone Formation Block Coal (South Derbyshire) Blockfield Blocking Bed Coal Blocking Coal (West Yorkshire) Blocking Rider Coal (West Yorkshire) Bloody Bay Sandstone Blowgill Member [Obsolete Name and Code: Use EBB] Blown sand Blown sand, 1 Blucks Pool Limestone [Obsolete Name And Code: Use BRL] Blue Anchor Formation Blue Anchor Formation And Penarth Group (Undifferentiated) Blue Clays [Obsolete Name and Code: Use EYCL] Blue Coal (Somerset) Blue Flats Ironstone (South Staffordshire) Blue Lias [Duplicate Lexicon Entry: Use BLS] Blue Lias [Obsolete Code: Use BLI] Blue Lias Formation Blue Lias Formation (Hebrides) Blue Lias Formation (Hebrides) and Breakish Formation, Interdigitated Blue Lias Formation (Hebrides), Breakish Formation, And Beinn Iadain Mudstone Formation Blue Lias Formation (Marginal Facies) Blue Lias Formation And Charmouth Mudstone Formation (Undifferentiated) Blue Lias Formation, Charmouth Mudstone Formation And Dyrham Formation (Undifferentiated) Blue Lias Formation, Scunthorpe Mudstone Formation And Charmouth Mudstone Formation (Undifferentiated) Blue Limestone Blue Marl [Obsolete Name and Code: Use GLT, CHAM] Blue Marle [Obsolete Name and Code: Use GLT] Blue Tour Coal (Ayrshire) Blue Tour Limestone Blue Wick Sands [Obsolete Name and Code: Use BW] Blue-Grey Series [Obsolete Name and Code: Use BCD, ESTI] Blues Limestones Bluntisham Clay [Obsolete Name and Code: Use AMC] Blyth Coal (Nottingham) Blyth Member [Obsolete Name and Code: Use BYTIL] Bnm3 Third Brown Metal Coal (West Yorkshire) Bo'ness Lower Ironstone Bo'ness Six Foot Coal Bo'ness Splint Coal (Glasgow Area; Central Coalfield) Bo'ness Upper Ironstone Boat Harbour Marine Band Boat Of Garten Pluton Boathill Limestone Member Bobberstone Farm Gravel Member Bochruben Formation Bod Deiniol Member Bodafon Beds [Obsolete Name and Code: Use BODA] Bodafon Formation Bodafon Moor Flags Bodafon Quartzite Bodeidda and Deganwy Mudstones [Obsolete Name and Code: Use COMU] Bodeidda Mudstones [Obsolete Name And Code: Use COMU] Bodeidda-Deganwy Mudstone [Obsolete Name and Code: Use DYM, BDM] Bodelwyn Beds [Obsolete Name and Code: Use NHBB] Bodelwyn Formation Bodgadle Member Bodieve Tuff Bodlondeb Tuff Member Bodmin Intrusion Bodorgan Formation Bodwr Coal (South Wales) Bodwrog Marble Bodwrog Member Bofrishlie Burn Sandstone Formation [Obsolete Name and Code: Use BBSA] Bofrishlie Burn Sandstone Member Bofrishlie Slate Formation Bog iron-ore Bog Mine Outliers [Obsolete Name and Code: Use BOQ] Bog Quartzite [Obsolete Name and Code: Use BOQ] Bog Quartzite Formation Boganglogh Margin Type Ultramafic Intrusion Boggierow Intrusion Boghead Gas Coal Boghole and Whitemire Beds Boglochty Beds Bogne Hollow Chert Member Bognor Member [Obsolete Name and Code: Use BOSA] Bognor Rock Bed [Obsolete Name and Code: Use BOSA] Bognor Sand [Obsolete Name and Code: Use BOSA] Bognor Sand Member Bogside Ironstone And Coal Bogside Limestone Bogside Main Coal Bogside Thick Coal Boheeshane Chalk Formation Boheeshane Chalk Member [Obsolete Name and Code: Use BHCK] Bold Formation Bold Venture Beds Bolders Bank Formation Bole Hill Channel Bole Hill Sandstone Bollandoceras Hodderense Beds [Obsolete Name and Code: Use BOH] Bollin Mudstone Formation [Obsolete Name and Code: Use BOM] Bollin Mudstone Member Bolsa Member Bolton Marine Band [Duplicate Lexicon Entry: Use BTNMB] Bolton Marine Band [Local Name: Use AGMB] Bomb Crater Bonahaven (Bunnahabhain) Dolomite Formation Bonahaven Dolomite [Obsolete Name and Code: Use DBBD] Bonaly Group [Obsolete Name And Code: Use BNY] Bonaly Volcanic Formation [Obsolete Name and Code: Use BNY] Bonaly Volcanic Member Bonanza Coal Bonawe Succession Bonchester Hill Plug Bonds Glen Limestone Member Bone Bed Limestone Bone Coal (Dungannon) Bone Coal (South Lancashire) Bonnington Intrusion (?Sill) Bonnyhill Craw Coal Bonsall Microgabbro Sill Bonsall Moor Basaltic Vent Bookham Conglomerate Bed Boon's Member Bopeep Flints Bordeaux Pit Member Border Group Border Group, Lower [Obsolete Code: Use LBO] Border Group, Lower [Obsolete Name And Code: Use BGN Or LYNE] Border Group, Middle [Obsolete Code: Use MBO] Border Group, Middle [Obsolete Name And Code: Use FELL] Border Group, Upper [Obsolete Name And Code: Use TYLS] Border Group, Upper [Obsolete Name and Code: Use UBO] Borders Glacigenic Subgroup Boreland Coal (Fife) Boreland Formation [Obsolete Name And Code: Use SHIN] Boreray Basic Magmatic Breccia Intrusion Borestone Coal Borrowash Sand And Gravel Borrowdale Sill Suite Borrowdale Volcanic Group Borrowdale Volcanic Series [Obsolete Name and Code: Use BVG] Borth Mudstones Formation Borthwick Sill Boscastle Formation Boscastle Measures [Obsolete Name and Code: Use BOSC] Boscombe Sand Formation Bosies Bank Formation Bosworth Clay Member Botany Grit Botany Limestone Bothkennar Gravel [Obsolete Name and Code: Use BKGR] Bothkennar Gravel Formation [Obsolete Name and Code: Use BKGR] Bothkennar Gravel Member Bothwell Bridge Marine Band Bothyhill Gravels Member Botney Cut Formation Bottom Beaumont Coal (Northumberland) Bottom Bed [Obsolete Name and Code: Use UPR] Bottom Beeston Coal (West Yorkshire) Bottom Bensham Coal (Northumberland) Bottom Brass Thill Coal (Durham) Bottom Brockwell Coal (Northumberland And Durham) Bottom Brown Metal Coal Bottom Busty Bottom Busty Coal (Northumberland And Durham) Bottom Coal (Birmingham) Bottom Coal (Rothbury Area) [Obsolete Name And Code: Use PLY] Bottom Coal (South Staffordshire) Bottom Coatyards Coal (Northumberland) Bottom Crag Limestone Bottom Durham Low Main Coal (Northumberland And Durham) Bottom First Waterloo Coal (Derby) Bottom Five Quarter Coal (Northumberland And Durham) Bottom Fourth Waterloo Coal (Derby) Bottom Furnace Coal (South Lancashire) Bottom Furnace Mine [Obsolete Name and Code: Use BOTF] Bottom Furnace Mine Coal Bottom Haigh Moor Coal Bottom Harvey Coal (Durham) Bottom Hebburn Fell Coal (Northumberland) Bottom High Main Coal (Derby) Bottom High Main Coal (Northumberland And Durham) Bottom Holers Coal (Birmingham) Bottom Holers Coal (South Staffordshire) Bottom Hutton Coal (Durham) Bottom Little Coal (Somerset) Bottom Little Limestone Bottom Little Vein [Obsolete Name and Code: Use BOLC] Bottom Main Coal (Durham) Bottom Marshall Green Coal (Northumberland And Durham) Bottom Maudlin Coal (Durham) Bottom Moorland Coal (Northumberland) Bottom Neddy Coal Bottom Neddy Mine [Obsolete Name and Code: Use BNED] Bottom Neddy Mine Coal Bottom Netherwitton Coal (Northumberland) Bottom Of Broomhill Coal Bottom Pigeon House Coal (South Lancashire) Bottom Plessey (Northumberland) Bottom Plessey Coal (Northumberland) Bottom Robins Coal (South Staffordshire) Bottom Rock Bottom Ryhope Five Quarter Coal (Northumberland) Bottom Ryhope Little Coal (Northumberland And Durham) Bottom Saltwick Coal (Northumberland) Bottom Second Waterloo Coal (Derby) Bottom Shuttles Coal (South Lancashire) Bottom Shuttles Mine [Obsolete Name and Code: Use BSHC] Bottom Shuttles Mine Coal Bottom Three-Quarter Coal (Northumberland And Durham) Bottom Tilley Coal (Northumberland And Durham) Bottom Usworth Coal (Northumberland And Durham) Bottom Vein Mine Ground (South Wales) Bottom Victoria Coal (Northumberland And Durham) Bottom Wheatworth Coal (West Yorkshire) Bottom Widdrington Main Coal Bottom Yard Coal (Northumberland) [Obsolete Name And Code: Use YARD] Bottom Yard Coal (South Lancashire) Boueti Bed Boulby Halite Boulby Potash Member Boulder clay [Obsolete Name and Code: Use TILL] Boulder Clay And Laminated Clay (Alternate Beds) Boulder clay of Lake District provenance [Obsolete Name and Code: Use SBTI] Boulder clay with Jurassic fossils [Obsolete Name and Code: Use WHGL] Boulder clay, glacial till [Obsolete Name and Code: Use VYORK] Bouldnor Copse Gravel Member Bouldnor Formation Bouley Rhyolite Formation Bouley Rhyolite Formation [Obsolete Code: Use BRH] Boultypatrick Grit Boundary Zone And Yell Sound Division (Undifferentiated) Boundary Zone Complex Bournemouth Formation [Obsolete Name And Code] Bournemouth Freshwater Beds Bournemouth Group [Obsolete Name and Code: Use BRB] Bournemouth Marine Beds Bourton Limestone Member Bovevagh Till [Obsolete Name And Code] Bovey Beds [Obsolete Name and Code: Use AGR, BHGR] Bovey Formation Bovisand Beds [Obsolete Name and Code: Use BVSB] Bovisand Formation Bovisand Formation [Obsolete Code: Use BOV] Bovisand Formation And Staddon Formation (Undifferentiated) Bow Beds [Obsolete Name and Code: Use BOB] Bow Breccia Formation Bow Conglomerates [Obsolete Name And Code: Use BOB] Bowden Way Beds Bowden Way Beds And Acuminata Beds (Undifferentiated) Bowfell Links Member [Obsolete Name and Code: Use BFL] Bowfell Links Sandstone Member Bowhills Formation [Obsolete Name And Code: See EN] Bowhills Member [Obsolete Name and Code: Use BWH] Bowhouse Coal (Fife) Bowhousebog Coal Bowhousebog Ironstone Bowland High Group Bowland High Group And Craven Group (Undifferentiated) Bowland Shale Formation Bowland Shale Formation (Offshore) [Obsolete Code: Use BSG] Bowland Shale Group [Obsolete Name and Code: Use BSG] Bowland Shale Group [Obsolete Name and Code: Use CRAV] Bowland Shale, Lower [Obsolete Name and Code: Use LBS] Bowland Shales [Obsolete Name and Code: Use BSG] Bowling Alley Coal (North Staffordshire) Bowmore Psammite [Obsolete Name and Code: Use BOWM] Bowmore Sandstone [Obsolete Name and Code: Use BOWM] Bowmore Sandstone Group Bowsebank Coal (Fife) Bowsey Wood Formation Box Law Plug Boyd's Burn Lava Member Boyd's Burn Lavas [Obsolete Name and Code: Use BDLA] Boyle Sandstone Formation Boyn Hill Gravel Formation [Obsolete Name and Code: Use BHT] Boyn Hill Gravel Member Boyn Hill Terrace [Obsolete Name and Code: Use BHT] Boyndie Bay Formation [Obsolete Name And Code: See MCD] Boyndie Bay Group [Obsolete Name and Code: Use MCD, DCBD] Boyne Castle Limestone Member Boyne Craig Till Formation Boyne Hollow Chert Member Boyne Limestone [Obsolete Name And Code: Use BOYL] Boyne Limestone Formation Bozeat Till Bracadale Formation Bracadale Group [Obsolete Name and Code: Use BDALE, BTAIG] Brachiopod Beds [Obsolete Name and Code: Use WAB] Brackaville Coal (Dungannon) Brackenslack Limestone Brackish Lagoonal Deposits Brackish Water Beds [Obsolete Name and Code: Use STAM] Bracklesham Beds [Obsolete Name and Code: Use WIDS, BRB] Bracklesham Beds And Barton Clay (Undifferentiated) [Obsolete Name And Code: See BRBA] Bracklesham Group Bracklesham Group [Duplicate Lexicon Entry: Use BRB] Bracklesham Group And Barton Group (Undifferentiated) Bracklesham Sand [Obsolete Name and Code: Use BRB] Bracklesham Sand/Beds [Obsolete Name and Code: Use BRB] Bracklinn Falls Conglomerate Member Bradford Beds [Obsolete Name and Code: Use FMB] Bradford Clay [Obsolete Name And Code] Bradford Coal Formation Bradford Coral Bed Bradford Dale Lava Bradford Four Foot Coal (South Lancashire) Bradford Four Foot Mine [Obsolete Name and Code: Use BR4FT] Bradford Four Foot Mine Coal Bradford Marine Band Bradford Marine Band [Local Name: See HTMB] Bradford Threequarters Coal (South Lancashire) Bradford Threequarters Mine [Obsolete Name and Code: Use B3QC] Bradford Threequarters Mine Coal Bradgate Formation Bradgate Tuff Formation [Obsolete Name And Code: Use CMBT] Bradley Coal Bradley Flags Bradley Grits [Obsolete Name And Code: Use BDLF] Brae Formation Brae Pluton Braemore Conglomerate Formation Braemore Lodge Sandstone Member Braemore Mudstone [Obsolete Name and Code: Use BRMU] Braemore Mudstone Formation Braemore Mudstone Formation And Braemore Sandstone Formation (Undifferentiated) Braemore Sandstone Formation [Obsolete Name And Code, Use: OA] Braemore Sandstones [Obsolete Name and Code: Use BLSS, BRSS] Braich Tu Du Volcanic Formation Braicklaich Sand Member Braicklaich Sands Member [Obsolete Name and Code: Use BRSA] Braid Hills Volcanic Member Braidon Bay Conglomerate Member [Obsolete Name And Code: See CATC] Brainshaugh Limestone Bramhope Grit Brampton Lower Felltop Limestone [Obsolete Name And Code: Use NWL] Brampton Upper Felltop Limestone [Obsolete Name And Code: See Revision Data] Brand Group Brand Hills Formation Brand Series [Obsolete Name and Code: Use CBA] Brandon Flint Member Brandon Flint Series [Obsolete Name and Code: Use BFLM] Brandon Grit Brandon Sandstone Bed Brandsby Roadstone Member Brandy Craig Formation [Obsolete Name and Code: Use BCG] Brandy Craig Lava Formation Branksome Sand Formation Branksome Sand Formation And Selsey Sand Formation (Undifferentiated) Branscombe Mudstone Formation Bransty Cliff Sandstone Member Brant Mudstone Formation [Obsolete Name And Code: Use CHAM] Brantingham Formation [Obsolete Name and Code: Use BTF] Brantingham Member Branxton Coal (Fife) Braslyd Coal (South Wales) Braslyd Fach Coal (South Wales) Braslyd Rider Coal (South Wales) Brass Thill Coal (Durham) Brass Vein Coal (South Wales) Brassey Coal (South Lancashire) Brassington Formation Brasspoint Flint Brassy Coal (Cumbria) Brassy Mine [Obsolete Name and Code: Use I7FT] Brathay Flag Formation [Obsolete Name and Code: Use BRF] Brathay Flags [Obsolete Name and Code: Use BRF] Brathay Formation Brathay Formation, Birk Riggs Formation And Coldwell Formation (Undifferentiated) Brathay Formation, Birk Riggs Formation And Wray Castle Formation (Undifferentiated) Braunroter Saltzton Brays Silts Formation Brazilly Coal (Forest Of Dean) Breadstone Shale Formation Breadstone Shale Formation And Micklewood Beds (Undifferentiated) Breadstone Shales [Obsolete Name and Code: Use BDSH] Breakish Formation Breaky Bottom Flint Breakyneck Scar Limestone Formation Breccia Gravel Breccia Group [Obsolete Name and Code: Use CLT] Breccia of Kenilworth, Lower [Obsolete Name and Code: Use KBR] Breccia of Kenilworth, Upper [Obsolete Name and Code: Use KBR] Breccio-Conglomerate [Obsolete Name and Code: Use VBR] Breckells Mudstone Formation [Obsolete Name and Code: Use BRM] Breckells Mudstone Member Breckells Mudstones [Obsolete Name and Code: Use BRM] Brecknockshire Drift [Obsolete Name and Code: Use BNOCK, LDTI] Brecknockshire Formation [Obsolete Name and Code: Use BNOCK, WALES] Brecknockshire Glacigenic Formation Brecks Coal Brecon Beacons Group Brecon Subgroup Breedon Breccia Breedon Member [Obsolete Name and Code: Use BREE] Breighton Cover Sand Formation [Obsolete Name and Code: Use BREI] Breighton Sand Formation Brendon Formation Brendon Hill Beds Brennand Grit Brennand Grit Formation (Lancaster District) [Obsolete Name and Code: Use PENDL] Brennand Grits [Obsolete Name and Code: Use BRNG] Brennand Grits Formation [Obsolete Name and Code: Use BRNG] Brennarnd Grit Brent Formation [Obsolete Name and Code: Use BRNT] Brent Group Bressay Flagstone Formation Bressay Flagstones [Obsolete Name and Code: Use BYF] Bretford Member [Obsolete Name and Code: Use BRET] Bretford Member, Lower Facet [Obsolete Name and Code: Use BRETL] Bretford Member, Upper Facet [Obsolete Name and Code: Use BRETU] Bretford Sand and Gravel Member Bretford Sand and Gravel Member and Wasperton Sand and Gravel Member (Undifferentiated) (Warwickshire Avon) Bretford Sand And Gravel Member, Lower Facet Bretford Sand And Gravel Member, Upper Facet Bretford Terrace Deposits [Warwickshire Avon] [Obsolete Name and Code: Use BRET] Brewin's Bridge Microgabbro Dyke Brewood Till Formation Breydon Formation Brick Clay Brickclay [Obsolete Name and Code: Use BCY] Brickearth Brickearth and Steyne Wood Clay [Obsolete Name and Code: Use STEYW] Brickiln Coal (North Staffordshire) Bricklieve Limestone Formation Brickworks Marine Band Brickworks Marine Band [Local Name: Use HNMB] Bridge Farm Gravel Member Bridge Limestone Bridge Limestone [Obsolete Code: Use BRDL] Bridgend Flags Bridges Formation Bridges Formation [Obsolete Code: Use BRGP] Bridges Group [Obsolete Name and Code: Use BRGP] Bridges Sandstone Formation [Obsolete Name and Code: Use MEST] Bridgeton Formation [Obsolete Name and Code: Use BRON] Bridgeton Sand Member Bridgewick Marls (One) Bridgewick Marls (Three) Bridgewick Marls (Two) Bridgnorth Sandstone Formation Bridgnorth Sandstone Formation [Obsolete Code: Use BRI] Bridlington Crag Bridport and Yeovil Sands [Obsolete Name and Code: Use BDS] Bridport Sand Formation Bridport Sands [Obsolete Name and Code: Use BDS] Briele Ground Formation [Obsolete Name and Code: Use BG] Brielle Ground Formation Brierley Coal (West And South Yorkshire) Brierley Division [Obsolete Name and Code: Use BRIE] Brierley Hill Cluster Brierley Member Brierley Rock Brig Formation Brig o' Balgownie Conglomerate Formation Brig O'Balgownie Conglomerate Formation [Obsolete Name and Code: Use BOBC] Brigantian Rocks (Undifferentiated) Bright Coal Brighton Marl Brights Coal (North Staffordshire) Brights Coal (Somerset) Brimham Grit Brimham Shale Brims Castle Dolomite Member Brims Castle Dolomitic Limestone Member [Obsolete Name and Code: Use BCDL] Brims Limestone Member [Obsolete Name And Code: Use BCDL] Brindister Flagstones Brine Extraction Bringewood Beds [Obsolete Name And Code] Bringewood Beds and Lower Elton Beds Bringewood Group [Obsolete Name and Code: Use LBN] Brinkmarsh Beds Brinsley Coal (Nottingham And Derby) Brinsley Thin Coal (Derby) Briscloonagh Sandstone Formation Bristol Avon River Terrace Deposits, 1 Member Bristol Avon River Terrace Deposits, 1 Member and 2 Member Undifferentiated Bristol Avon River Terrace Deposits, 2 Member Bristol Avon Valley Formation Britannia Catchments Group Britannia Sandstone Formation Britannic Marine Band Britannic Marine Band [Local Name: See SOMB] Brithdir Beds [Obsolete Name and Code: Use BD] Brithdir Coal (Lower Leaf) (South Wales) Brithdir Coal (South Wales) Brithdir Coal (Upper Leaf) (South Wales) Brithdir Formation [Obsolete Name and Code: Use BD] Brithdir Member Brithdir Rider Coal (South Wales) Brithidir Breccia Brithidir Porphyry Brithion Formation Brithion Tuff [Obsolete Name and Code: Use BRT] British Coastal Deposits Group British Tertiary Volcanic Province Group [Obsolete Name And Code] Briton's Lane Formation Briton's Lane Sand And Gravel Member Briton's Lane Sands and Gravels [Obsolete Name and Code: Use BRLSG] Brixham Limestone [Obsolete Name and Code: Use BRXL] Brixham Limestone Formation Broad Law Intrusion Broad Law Vein Broad Vein [Obsolete Name and Code: Use BRV] Broad Vein Formation [Obsolete Name and Code: Use BRV] Broad Vein Mudstone Formation Broadearth Fireclay Broadford Beds (part) [Obsolete Name and Code: Use LUSA] Broadford Beds Formation Broadford Beds Formation And Pabay Shale Formation (Undifferentiated) Broadford Gabbro (Skye Eastern Red Hills Centre) Broadlee Glen Sandstone Member Broadlee Glen Sandstones Formation [Obsolete Name and Code: Use BRLG] Broadlie Coal Broadstairs Member [Obsolete Name and Code: Use SECK] Broadstone Clay Member Broadstone Limestone [Obsolete Name And Code: Use HUR] Broadstone Sand Member Broadstone Sand Member And Oakdale Sand Member (Undifferentiated) Brochel Member Brock Crags Andesite Formation Brock Hall Coal (Wyre Forest) Brocka Bank Grit Bröckelschiefer Member Brockholes Sandstones Brockley Down Limestone Brockley Plug Brockram Brockwell Coal (Northumberland And Durham) Brockwell Rider Coal (Northumberland And Durham) Brodick And Lamlash Beds Brodick Breccia Brodie Sandstone unit Brofiscin Oolite Formation Bromfield Sand and Gravel Bromley No. 4 Bromleysmill Shale Formation Bromleysmill Shales Formation [Obsolete Name and Code: Use BSF] Bromsgrove Sandstone Formation [Obsolete Name And Code: Use HEY] Bromsgrove Sandstone Formation, Helsby Sandstone Formation, Wildmoor Sandstone Formation And Wilmslow Sandstone Formation (Undifferentiated) Bron Y Graig Formation Bronllwyd Grit Formation Bronsil Shale Formation Bronsil Shales [Obsolete Name and Code: Use BRSH] Bronydd Formation Bronzite picrite dykes of the Scourie Dyke Swarm [Obsolete Name and Code: Use BMP] Brooch Coal (South Staffordshire) Brooch Coal (South Staffordshire) [Obsolete Code: Use BROO] Brooch Fireclay Brooch Ironstone Brook End Sandstone Member Brook Formation [Obsolete Name and Code: Use SKCAT] Brook-Bottom Tuff Brooks Mill Mudstone Formation [Obsolete Name and Code: Use BCMU] Brooksbottom Sandstones Brooksbottoms Coal (South Lancashire) Brooksbottoms Grit Brooksby Sand And Gravel Broom Farm Sandstone Formation Broom Formation Broom Sub-Unit [Obsolete Name and Code: Use BROM] Broome Member Broomhill Clay Formation Broomhill Clay Member [Obsolete Name and Code: Use BRLL] Broomhill Formation [Obsolete Name and Code: Use BRLL] Broomhill Main (Northumberland) Broomhill Main Coal (Northumberland) Broomhill Member [Obsolete Name and Code: Use BRLL] Broomhouse Formation [Obsolete Name and Code: Use BHSE, GOHL] Broomhouse Sand and Gravel Formation Brora Arenaceous And Argillaceous Bed [Obsolete Name And Code: See BRARG And BRARE] Brora Arenaceous Formation Brora Arenaceous Series [Obsolete Name and Code: Use CYK] Brora Arenaceous Series and Upper Part Of Brora Argillaceous Series Brora Argillaceous Formation Brora Argillaceous Formation (upper part, Fascally Siltstone Member) [Obsolete Name and Code: Use CYK] Brora Argillaceous Series (Pars) Brora Argillaceous Series (upper part) [Obsolete Name and Code: Use CYK] Brora Argillaceous Series [Obsolete Name and Code: Use BRARG, SSTV] Brora Brick Clay Member Brora Coal [Obsolete Name and Code: Use BOCO] Brora Coal Bed Brora Coal Formation Brora Coal Member [Obsolete Name and Code: Use BOCO] Brora Coal, Shales, Shelly Clays and Sandstones, and 'Roof Bed' [Obsolete Name and Code: Use BROR] Brora Formation [Obsolete Name and Code: Use BETR] Brora Lower Oolite [Obsolete Name and Code: Use BOCO] Brora Roof Bed Brora Sandstone Member Brora Shale Formation [Obsolete Name and Code: Use BROR] Brora Shale Member Brotherton (Magnesian Limestone) Formation [Obsolete Name and Code: Use BTH] Brotherton Beds [Obsolete Name and Code: Use BTH] Brotherton Formation Broubster Till Member Broughderg Schists [Obsolete Name And Code] Broughton Coal Broughton Moor Formation Broughton Moor Formation And Appletreeworth Volcanic Formation (Undifferentiated) Brow Vein Browgill Beds [Obsolete Name and Code: Use BRW] Browgill Formation Browgill Member [Obsolete Name and Code: Use BRW] Browgill Shales [Obsolete Name And Code: Use BRW] Brown And Grey Sandstone Member Brown Bank Bed [Obsolete Name and Code: Use BNB] Brown Bank Formation Brown Bank Ignimbrite Formation [Obsolete Name and Code: Use BBA] Brown Bank Tuff Formation Brown Clay with Stones [Obsolete Name and Code: Use CASS] Brown Howe Member [Obsolete Name and Code: Use BNH] Brown Howe Tuff Member Brown Metal Coal Brown Rake Coal (Nottingham And Derby) Brown Sands and Gravels [Obsolete Name and Code: Use BEGR] Brown's Fireclay Brown's Vein Brownber Formation Brownber Pebble Bed [Obsolete Name and Code: Use BNBF] Brownber Pebble Beds [Obsolete Name And Code: Use BNBF] Brownlow Mudstone [Obsolete Name And Code] Brownstone Group [Obsolete Name And Code: See BRS] Brownstones (In Part) Brownstones [Obsolete Name and Code: Use BRS] Brownstones Formation Broxburn Marls Broxburn Shale Bruar Psammite Formation Bruce A [Obsolete Name and Code: Use HUGI] Bruce B [Obsolete Name and Code: Use HUGI] Bruce Sandstone Member Bruce Upper Sands [Obsolete Name and Code: Use HUGI] Brunachan Psammite Formation Brunel Beds Brunel Formation [Obsolete Name and Code: Use BRU] Brunton Quarry Coal (Northumberland) Brunton Quarry Sandstone Brushford Member Brutach Dearg Member Bryans Coal (Lothian) Bryn Beds [Obsolete Name and Code: Use BSI] Bryn Bedwen Formation [Obsolete Name and Code: Use CER] Bryn Bedwen Formation [Obsolete Name And Code: Use CER] Bryn Brith Beds [Obsolete Name and Code: Use BYN] Bryn Brith Grits [Obsolete Name and Code: Use BYN] Bryn Brith Member Bryn Coal Bryn Coal (South Wales) Bryn Dowsi Mudstone Bryn Nicol Formation Bryn Nicol Formation, Coed Ifan Facies Bryn Nicol Formation, Pen Derlwyn Facies Bryn Siltstone Formation Bryn Syllty Disturbed Bed Bryn Tirion Member Bryn-Crin Basaltic Trachyandesite Bryn-Glas Formation Bryn-Glas Group [Obsolete Name and Code: Use BGF] Bryn-Glas Mudstones [Obsolete Name and Code: Use BGF] Bryn-Teg Volcanic Formation Bryncoch Coal Bryncoch Coal (South Wales) Bryncroes Formation Bryne Formation [Obsolete Name and Code: Use PNTL] Brynloi Coal (South Wales) Brynrefail Group Brynwhilach Two-Feet Coal (South Wales) Bryozoa Band (Ravenstonedale) Brython Glacigenic Group Bu Ness Group [Obsolete Name and Code: Use BNG] Bu Ness Sandstone Formation Bualintur Formation Buccleuch Limestone [Obsolete Code: Use BUCC] Buccleuch Limestone [Obsolete Name And Code: Use FFL] Buchan Beds [Obsolete Name and Code: Use BUG] Buchan Formation Buchan Formation [Obsolete Code: Use BUHN] Buchan Gravels Formation Buchan Gravels Group [Obsolete Name and Code: Use BUG] Buchan Gravels Member [Obsolete Name and Code: Use BURG] Buchan Ridge Gravel Member Buchanan Clay Member Buchanan Formation [Obsolete Name and Code: Use BCHN] Buchlyvie Sandstone Member Buck Hills Greywacke [Obsolete Name and Code: Use CMBG] Buck Hills Grit [Obsolete Name and Code: Use CMBG] Buck Hills Member Buckator Formation Buckbanks Sandstone Member Buckhaven Planolites Bed Buckholm Formation [Obsolete Name and Code: Use ETRK, KKHP] Buckholm Grits [Obsolete Name and Code: Use QBY] Buckholme Formation [Obsolete Name and Code: Use TLEE] Buckie Beds [Obsolete Name and Code: Use BUC] Buckie Formation [Obsolete Name and Code: Use BUC] Buckie Limestone Formation Bucklandi Clays [Obsolete Name and Code: Use SMD] Bucklands Clays [Obsolete Name and Code: Use BKHM] Buckle Marls (Five) Buckle Marls (Four) Buckle Marls (One) Buckle Marls (Six) Buckle Marls (Three) Buckle Marls (Two) Bucklebury Common Gravel Member Bucklebury Gravel [Obsolete Name and Code: Use BYGR] Buckley Fireclay Formation [Obsolete Name And Code: Use ETM] Buckstone Grit [Obsolete Name and Code: Use BUR] Buddon Sands [Obsolete Name and Code: Use KNSA] Bude Formation Bude Formation And Bideford Formation (Undifferentiated) Bude Sandstones [Obsolete Name and Code: Use BF] Budleigh Salterton Conglomerate [Obsolete Name and Code: Use BSP] Budleigh Salterton Conglomerate and Sandstone [Obsolete Name and Code: Use CHES] Budleigh Salterton Pebble Bed [Obsolete Name and Code: Use BSP, CHES] Budleigh Salterton Pebble Beds [Obsolete Name and Code: Use BSP] Budleigh Salterton Pebble Beds Formation [Obsolete Name And Code Use: CHES] Buff Coal (Bristol Area) Bught Craig Member Building Stones Buildwas Beds [Obsolete Name and Code: Use BUI] Buildwas Formation Buildwas Formation And Coalbrookdale Formation (Undifferentiated) Builth Mudstones Formation Builth Volcanic Formation [Obsolete Name And Code: Use BUVO] Builth Volcanic Group Buitenbanken Formation Buldoo Flagstone Formation [Obsolete Name and Code: Use CKBA] Bulkeley Hill Formation [Obsolete Name and Code: Use BHSF] Bulkeley Hill Sandstone Formation [Obsolete Name And Code Use: HEY] Bull Cliff Bed Bull Coal (Somerset) Bull Crag Coal (Northumberland) Bull Gap Shales [Obsolete Name And Code] Bull Vein [Obsolete Name and Code: Use BLLC] Bulldog Coal (South Lancashire) Buller's Hill Gravel [Obsolete Name and Code: Use BHGR] Buller's Hill Gravel Formation [Obsolete Name and Code: Use BHGR] Buller's Hill Gravel Member Bullerthorpe Lane Sandstone Bullhead Bed Bullhurst Coal (North Staffordshire) Bullhurst Rock (North Staffordshire) Bullion Mine Coal (South Lancashire) Bullion Mine Rock [Obsolete Name And Code: Use GAS] Bullrock Greywacke [Obsolete Name and Code: Use DCBG] Bullrock Greywacke Formation [Obsolete Name and Code: Use DCBG] Bullrock Greywacke Member Bullslaughter Limestone Formation [Obsolete Name And Code: Use OB] Bulman Main Coal (Northumberland) [Also Known As Cancer Coal] Bulmer Vein Bulthy Formation Bunchrew Sandstone Member Bundoran Shale Formation Bungalow Formation [Obsolete Name and Code: Use CAGH] Bungilow Coal (North Staffordshire) Bunny Sand And Gravel Bunter (Undifferentiated) [Obsolete Name And Code] Bunter Conglomerate Beds [Obsolete Name and Code: Use CHES] Bunter Pebble Beds [Obsolete Name And Code: Use CHES] Bunter Sandstone [Obsolete Name and Code: Use SSG, CHES] Bunter Sandstone Formation Bunter Shale Formation Bunter Siltstone Member [Obsolete Name And Code] Burcot Breccia [Obsolete Name and Code: Use HEY] Burcot Member Burdiehouse Limestone Bure Valley Beds [Obsolete Name and Code: Use DOBP, WRCG] Bure Valley Beds and Weybourne Crag [Obsolete Name and Code: Use HOWH] Bure Valley Formation Burford Coal Formation [Obsolete Name and Code: Use BRFC] Burford Coal Group [Obsolete Name and Code: Use BRFC] Burford Coal Member Burghead Beds [Obsolete Name and Code: Use BRSF] Burghead Sandstone [Obsolete Name and Code: Use BRSF] Burghead Sandstone Formation Burghie Shale Member [Obsolete Name and Code: Use BETR] Burghy Coal [Obsolete Name and Code: Use BGYC] Burgy Coal (South Lancashire) Burial Ground Buried Gravel Layer Burlington Member [Obsolete Name and Code: Use WRE] Burn Bridge Arenite [Obsolete Name and Code: Use CMBN] Burn of Benholm Peat [Obsolete Name and Code: Use BBP] Burn of Benholm Peat Bed Burn of Benholm Peat Member [Obsolete Name and Code: Use BBP] Burn Of Mar Sandstone Formation Burn Side Conglomerate Member Burncrooks Pyroclastic Member [Obsolete Name and Code: Use BCV] Burncrooks Volcaniclastic Member Burnfoot Bridge Coal (New Cumnock) Burnfoot Shales Burnham Chalk Formation Burnham Formation [Obsolete Name and Code: Use BCK] Burnhead Intrusion Burnhouse Lava Member Burnhouse Lavas [Obsolete Name and Code: Use BHLA] Burnhousemoor Member Burning Mount Plug Burnley Four Feet Coal Burnley Four Foot Coal (Lancashire) Burns Beds Burns Sandstone Member Burnside Formation [Obsolete Name and Code: Use BRN] Burnside Intrusion (Plug) Burnside Sandstone Formation Burntisland Lavas [Obsolete Name and Code: Use KNV] Burntisland Marine Band Burnwood Coal (North Staffordshire) Burnwood Ironstone Burra Firth Formation Burradon Coal (Northumberland) Burraton Formation Burrier Wick Till Formation Burrington Oolite Formation [Obsolete Name and Code: Use BO] Burrington Oolite Subgroup Burthel Beds [Obsolete Name and Code: Use KNN] Burtle Beds [Obsolete Name and Code: Use BUB] Burtle Formation Burtle Sands Beds [Obsolete Name and Code: Use BUB] Burton Cliff Formation Burton Cliff Palynological Association Burton Formation Burton Joyce Marine Band Burton Joyce Marine Band Burton Joyce Marine Band Burton Lazars Head Burton Sub-Unit [Obsolete Name and Code: Use BURT] Burwardsley Hill Bed Burway Formation Burway Formation [Obsolete Code: Use BUGP] Burway Group [Obsolete Name and Code: Use BUGP] Bush Coal (Fife) Bushley Green Member Bushley Green Terrace (Upper Part) [Obsolete Name and Code: Use SPHT] Bushley Green Terrace [Obsolete Name and Code: Use BGT] Bushley Green Terrace Deposits (River Severn) [Obsolete Name and Code: Use BGT] Bushley Green Terrace Deposits [Obsolete Name and Code: Use BGT] Bushy Coal (South Wales) Bussell's Member Bussell's Mudstone Member [Obsolete Name and Code: Use BUSS] Busty Coal (Northumberland And Durham) Butcombe Sandstone Butcombe Sandstone Member [Duplicate Lexicon Entry: Use BUS] Butcombe Sandstone Member [Obsolete Name and Code: Use AS] Bute Coal (South Wales) Bute Conglomerate Formation Bute Limestone [Obsolete Name and Code: Use ARL] Butt Hill Member [Obsolete Name and Code: Use KKF] Butterby Member Butterby Till Member Buttergask Flagstone Member Buttergask Formation [Obsolete Name and Code: Use BTG] Buttergask Member [Obsolete Name and Code: Use BTG] Butterly Marine Band Buttermere Formation Buttermere Formation (Hornfelsed) Buttershaw Limestone Butterton - Swynnerton Dykes Butterton Sandstone [Obsolete Name and Code: Use BUTS] Butterton Sandstone Bed Butterton Sandstone Member [Obsolete Name and Code: Use BUTS] Buttington Mudstone Formation Buxton Rock [Obsolete Code: Use BUR] Buxton Rock Member Bwlch Groes Porphyritic Microgranite Bwlch Mawr Microgranodiorite Intrusion Bych Beds Bychton Two Yard Coal (North Wales) Bydown Chert [Obsolete Name And Code: See COH] Byestead's Sandstone Byley Mudstone Formation [Obsolete Name and Code: Use BYM] Byley Mudstone Formation And Wych Mudstone Formation (Undifferentiated) Byley Mudstone Member Byne Hill Granite [Obsolete Name and Code: Use BYNE] Byne Hill Intrusion Byth Gravel [Obsolete Name and Code: Use HOBGR] Byth Till [Obsolete Name and Code: Use BYTIL] Byth Till Formation Bytham Catchments Subgroup Bytham Formation [Obsolete Name and Code: Use BYTH] Bytham Sand and Gravel Formation Bytham Sands and Gravels [Obsolete Name and Code: Use ISAG] Bytham Sands and Gravels Formation [Obsolete Name and Code: Use BYTH] Bytham Sands and Gravels; Unit 2, Shouldham Sands of Lewis, p. 127-130 in Lewis et al., 1991 [Obsolete Name and Code: Use FOGR] C Sands [Obsolete Name and Code: Use PNTL] C-Bed Evaporite C2 and C2-3 Slate [Obsolete Name and Code: Use TVS] Caaf Water Limestone Formation Caban Conglomerate Formation Caban Conglomerate Formation (formerly Facies) [Obsolete Name and Code: Use CBN] Caban Conglomerate Formation (Lower Conglomerate Of Lapworth) Caban Conglomerate Formation (Upper Conglomerate Of Lapworth) Caban Conglomerate Formation: Caban Conglomerate Facies Caban Conglomerate Formation: Fifth Sequence Of Caban Conglomerate Facies Caban Conglomerate Formation: First Sequence Of Caban Conglomerate Facies Caban Conglomerate Formation: Fourth Sequence Of Caban Conglomerate Facies Caban Conglomerate Formation: Second Sequence Of Caban Conglomerate Facies Caban Conglomerate Formation: Third Sequence Of Caban Conglomerate Facies Caban Conglomerates [Obsolete Name and Code: Use CBN] Caban Group [Obsolete Name And Code] Cabrach Sandstone [Obsolete Name And Code: Use CAB] Cabrach Sandstone Formation Caburn Beds Caburn Flints Caburn Marl Caburn Sponge Bed Cadbury Beds [Obsolete Name and Code: Use CYBR] Cadbury Breccia Formation Cadder Clay Member [Obsolete Name and Code: Use CADR] Cadder Formation [Obsolete Name and Code: Use CADR] Cadder Sand and Gravel Formation Cadder Sand Formation [Obsolete Name and Code: Use CADR] Caddroun Burn Beds Cadeby (Magnesian Limestone) Formation [Obsolete Name and Code: Use CDF] Cadeby Formation Cadell's Parrot Coal Cademan Volcanic Breccia Member Cadgers Loan Rock [Obsolete Name and Code: Use CDLS] Cadgers Loan Sandstone Cadh'-an-Righ Shale Member Cadham Craw Coal Cadham Little Coal Cadham Main Coal Cadham Under Coal Cadnant Shale Formation [Obsolete Name and Code: Use NOG] Cadnant Shales [Obsolete Name and Code: Use NOG] Cadnant Shales Formation [Obsolete Name And Code: See NOG] Cae Adda Volcanic Formation Cae Castell Formation Cae'r-Mynach Formation Caedavid Coal (South Wales) Caenlochan Schist Formation Caer Beris Member Caer Caradoc Andesites [Obsolete Name And Code] Caer Caradoc Rhyolites (A) [Obsolete Name And Code] Caer Caradoc Rhyolites (B) [Obsolete Name And Code] Caerau Coal (South Wales) Caerau Formation And Blaen Myherin Mudstones Formation (Undifferentiated) Caerau Mudstones Formation Caerau Mudstones Formation (Lower Tongue) Caerau Mudstones Formation (Upper Tongue) Caerbwdy Group Caerbwdy Sandstone Formation Caerbwdy Sandstone Formation And Solva Group (Undifferentiated) Caerbwdy Series [Obsolete Name and Code: Use PVC] Caered Flags Caerfai Bay Shales Formation Caerfai Beds [Obsolete Name and Code: Use CIS] Caerfai Formation [Obsolete Name and Code: Use CIS] Caerfai Group Caerfai Series [Obsolete Name and Code: Use CIS] Caergribin Rhyolite Intrusion Caerhys Shale Formation Caerketton Group [Obsolete Name and Code: Use CAE] Caerketton Volcanic Group [Obsolete Name and Code: Use CAE] Caerketton Volcanic Member Caernarfon Bay Formation Caesar's Camp Formation [Obsolete Name and Code: Use CCGR] Caesar's Camp Gravel (A) [Obsolete Code: Use CCGR] Caesar's Camp Gravel (B) [Obsolete Code: Use CCGR] Caesar's Camp Gravel [Obsolete Name and Code: Use CCGR] Caesar's Camp Gravel Formation Cailleach Head Formation Cairfai Bay Shales Formation [Obsolete Name And Code: Use CFBS] Cairn Gibbs Psammite Formation Cairn Liath Quartzite Member Cairn Of Claise Transition Formation Cairn Trench Intrusion Cairnbulg Diorite Cairndinnis Plug Cairnerzean Formation [Obsolete Name And Code: Use GDF] Cairnfield Actinolitic Flags [Obsolete Name And Code: Use CCFL] Cairnfield Calcareous Flag Formation Cairngarroch Intrusion Cairngorm Granitic Suite [Obsolete Name and Code: Use CGMGR] Cairngorm Pluton Cairngorm Pluton, Phase 1 Cairngorm Pluton, Phase 2 Cairngorm Pluton, Phase 3 Cairngorm Pluton, Phase 4 Cairngorm Pluton, Phase 5 Cairngorm Pluton, Phase 6 Cairnharrow Formation Cairns Of Ord Intrusion Cairnsmore Of Carsphairn Pluton Cairnsmore of Fleet Granite [Obsolete Name and Code: Use COFG] Cairnsmore Of Fleet Pluton Cairnwell Quartzite Formation Caister Coal Formation Caithness Flagstone Group Caithness Flagstone Series [Obsolete Name and Code: Use LCF, LSF, UCF, USF] Caithness Shelly Drift [Obsolete Name and Code: Use FOTI] Caithness Shelly Till Calcareous Conglomerate Group [Obsolete Name And Code: See EN] Calcareous Grit [Obsolete Name and Code: Use ECG] Calcareous Grit, Lower [Obsolete Name and Code: Use LCG] Calcareous Group (Lower Culm Measures) [Obsolete Name and Code: Use TCH] Calcareous Sandstone Bed [Obsolete Name and Code: Use NANN] Calcareous Series, Durness Limestone, Durness Limestone or Dolomite [Obsolete Name and Code: Use DNG] Calcareous Shale Member Calcareous tufa Calciferous Sandstone [Obsolete Name and Code: Use BYC] Calciferous Sandstone Measures [Obsolete Name and Code: Use INV, SYG] Calcite Mudstone Group [Obsolete Name and Code: Use LLY] Calcrete Caldecote Volcanic Formation Caldecote Volcanic Series [Obsolete Name and Code: Use CAV] Calder Mudstone Formation [Obsolete Name and Code: Use CDMM] Calder Mudstone Member Calder Sandstone Formation [Obsolete Name And Code Use: WLSF] Calders Member Caldon Low Conglomerate Member Caldron Hill Sill Caledonia Glacigenic Group Caledonian Igneous Suite [Obsolete Name And Code: See CIGSS] Caledonian Igneous Supersuite [Obsolete Name and Code: Use CIGSS] Caledonian Supersuite Calettwr Quartzite [Obsolete Name and Code: Use CAQ] Calettwr Quartzite Member Calettwr Quartzite Member And Hirnant Limestone Member (Undifferentiated) Caley Crags Grit Caley Grags Grit Calhame Limestone California Clayband Ironstones California Glacigenic Group California Quarry Formation [Obsolete Name and Code: Use BTN] California Till Member Calke Abbey Sandstone Formation Callan Group Callander Craig Conglomerate [Obsolete Name and Code: Use CCCO] Callander Craig Conglomerate Member Callant Limestone Callovian And Oxfordian Rocks (Undifferentiated) Calmstone Coal (Sanquhar) Calmy Limestone Calne Freestone and Coral Rag [Obsolete Name and Code: Use STFD] Calne Sands Formation Calp Limestone Group Calp Limestone of the Calp or Middle Limestone [Obsolete Name and Code: Use GRLF] Calp Or Middle Series [Obsolete Name And Code] Calp Sandstone of the Calp or Middle Limestone [Obsolete Name and Code: Use MMS] Calp Shale of the Calp or Middle Limestone [Obsolete Name and Code: Use BBSF] Calton Limestone [Obsolete Name And Code: Part Of MI] Cam Crags Sandstone Member Cam Spout Tuff Cam Spout Tuff Member [Obsolete Name and Code: Use CPT] Cam Valley Formation Camas Chil Mhalieu Formation Camas Malag Formation Camasunary Sandstone Member Camasunary Siltstone Member Cambeck Beds [Obsolete Name and Code: Use CMBB] Cambeck Member Camberley Sand Formation Cambir Dolerite Sheet-Swarm Cambois Little Coal (Northumbria) Cambrian And Ordovician Rocks (Undifferentiated) Cambrian Quartzite [Obsolete Name and Code: Use MCQ] Cambrian Rocks (Undifferentiated) Cambridge Bed [Obsolete Name and Code: Use CBG] Cambridge Greensand [Obsolete Name And Code: Use CBG] Cambridge Greensand Member Cambriense Marine Band Cambuslang Marble Camderry Member Camlo Hill Group [Obsolete Name and Code: Use NTM] Camnant Mudstone Formation Camnant Mudstones Formation [Obsolete Name and Code: Use CTE] Camp Fauld Till Formation Campanian Rocks (Undifferentiated) Campbell Park Marine Band Camphill Gelifluctate Bed Camphill Limestones Camphouse Quartz-Dolerite Intrusion Camps Shale Campsie Claybands Campsie Dyke Campsie Formation [Obsolete Name and Code: Use CMPL] Campsie Lava Member Campsie Limestone Member Camregan Group [Obsolete Name And Code: Use (Part Of) DLY] Camregan Limestone, Upper [Obsolete Name And Code: Use WOB] Canal Cutting Canal Embankment Canaston Beds Cancelloceras Cancellatum Marine Band Cancelloceras Cancellatum Marine Band [Obsolete Code: Use G1A1] Cancelloceras Cumbriense Marine Band Cancelloceras Cumbriense Marine Band [Obsolete Code: Use G1B1] Cancer Coal Candleston Oolite [Obsolete Name And Code: Use BFO] Caninia Dolomite [Obsolete Name And Code] Caninia Oolite [Obsolete Name And Code: Use GUO] Caninia Shales and Dolomite [Obsolete Name and Code: Use CDM] Canisp Porphyry Sills Cann Sand Member Cann Wood Slate Formation [Obsolete Name and Code: Use TVY] Canna Formation Canna Lava Formation Cannapark Limestone Cannel Coal (Cumbria) Cannel Coal (In Pennine Lower Coal Measures South Lancashire) Cannel Coal (In Pennine Middle Coal Measures South Lancashire) Cannel Coal (Leicestershire) Cannel Coal (Machrihanish) Cannel Coal (Midgeholm) Cannel Coal (North Wales) Cannel Mine [Obsolete Name and Code: Use CCSL] Cannel Mine Coal Cannel Mine Marine Band Cannel Mine Marine Band [Local Name: See MFMB] Cannel Rock (South Lancashire) Cannel Row Coal (North Staffordshire) Cannel Seam [Obsolete Code: Do Not Use] Cannock Chase Formation [Obsolete Name And Code Use: CHES] Canonbie Bridge Sandstone Formation Canonbie Five Foot Coal Canonbie Nine Foot Coal Canonbie Seven Foot Coal Canonbie Six Foot Coal Canonbie Three Foot Coal Cantray Till Member Canty Bay Sandstone Caochandye Quartzite Member Caoilte Formation Caoilte Sequence [Obsolete Name and Code: Use CAOL] Caoilte Subsequence [Obsolete Name and Code: Use CAOL] Cape Shore Formation Cape Wrath Sandstone Member Capel Curig Volcanic Formation Capel Parc Formation Capelaw Acid Volcanic Formation Capelaw Basic Group and Capelaw Acid Group [Obsolete Name and Code: Use CPW] Capelaw Basic Volcanic Formation Capelaw Volcanic Formation [Obsolete Name and Code: Use CPW] Capelaw Volcanic Member Capistal Psammite Formation Capledrae Parrot Coal Caprington Sill Captain Sandstone Member Captain's Bridge Limestone Captain's Fireclay Caradoc And Ashgill Rocks (Undifferentiated) Caradoc Rocks (Undifferentiated) Caradoc Shales Caran Sandstone unit Carbeth Lava Member Carbeth Lavas [Obsolete Name and Code: Use CBTL] Carbonaceous Group [Obsolete Name and Code: Use DBPB] Carboniferous And Permian Rocks (Undifferentiated) Carboniferous Lavas [Obsolete Name and Code: Use GEIL] Carboniferous Limestone (Series) [Obsolete Name and Code: Use TIL] Carboniferous Limestone [Obsolete Name and Code: Use CL] Carboniferous Limestone Series [Obsolete Name and Code: Use CLWYD, PKLM] Carboniferous Limestone Supergroup Carboniferous Rocks (Undifferentiated) Carboniferous-Permian Extensional Supersuite Carbost Conglomerate Member Cardiaster Beds [Obsolete Name and Code: Use PRC] Cardiff Group Cardigan Bay Formation Carding Mill Grit [Obsolete Name and Code: Use CDDG] Cardingmill Grit [Obsolete Code: Use CDDG] Cardingmill Grit Member Careg Onen Formation Careg-Onen Beds (A) [Obsolete Name And Code: Use OCO] Careg-Onen Beds (B) [Obsolete Name And Code: Use OCO] Careg-Onen Limestone Formation [Obsolete Name And Code: Use LEEL] Careg-Onen-Beds [Obsolete Name and Code: Use OCO] Careg-Wiber Volcanic Formation Carewoodrig Vent Carey Beds [Obsolete Name and Code: Use CYSI] Carey River Basalt Formation Carey Silt Member Carganamuck Limestone Formation Carghidown Beds [Obsolete Name and Code: Use CGD] Carghidown Formation Carham Limestone [Obsolete Name and Code: Use CHML] Carham Limestone Bed Carham Stone [Obsolete Name and Code: Use CHML] Carhurlie Coal Carland Sandstone Member Carlandcheek Vent Carlane Sandstone Formation Carleton Hall Clay Member Carleton Silt Formation Carlinden Formation [Obsolete Name and Code: Use CARL] Carlinden Shale Formation Carlingford Complex Carlingford Limestone Group Carlops Oil-Shale Carlops Shale Carlton Formation [Obsolete Name And Code: Part Of GUN] Carlton Formation and Harlequin Formation [Obsolete Name and Code: Use GUN] Carluke Coals Carluke Tower Coal (Central Coalfield) Carlyle Beds Carmel Formation Carmel Group [Obsolete Name and Code: Use SCC] Carmel Head Gneiss Package Carmel Member Carmichael Burn Formation Carmichael Burn Group [Obsolete Name and Code: Use CARM, CMBN] Carmichael Group Carmill Gas Coal Carn A'Chlamain Member Carn A'Ghaill Member Carn An Daimh Transitional Member Carn Brea Intrusion Carn Chuinneag - Inchbae Augen Gneiss [Obsolete Name and Code: Use CCIA] Carn Chuinneag and Inchbae Augen Gneiss Carn Dubh Quartzite Member Carn Fadryn Quartz Microdiorite Carn Fadryn Suite Carn Gorm Pegmatite Suite Carn Limestone Member Carn Llidi Gabbro Carn Llidi Intrusion [Obsolete Name and Code: Use CLIN] Carn Llundain Formation Carn Mairg Quartzite [Obsolete Name and Code: Use DBCM] Carn Mairg Quartzite Formation Carn Marth Intrusion Carn Monadh Gravel Formation Carn Mor Sandstone Member Carn Odhar Granite Cupolas Carn Powell Facies (of Black Cock Beds) [Obsolete Name and Code: Use CWGL] Carn Powell Facies [Obsolete Name and Code: Use CWGL] Carn Powell Member Carn Teikever Granite Carn Y Parc Formation [Obsolete Name And Code: Use CEI] Carn-Y-Parc Formation [Obsolete Name and Code: Use CEI] Carnallitic Marl Carnamuck Formation Carnaneigh Green Beds Carnbroe Marine Band (Central Coalfield) Carnduff Halite Carne Formation Carneal Plug [Obsolete Name And Code] Carnedd Iago Formation [Obsolete Name And Code: Use ALL] Carnedd Y Filiast Grit Member Carneddau Group (A) [Obsolete Name And Code] Carneddau Group (B) [Obsolete Name And Code] Carneddau Volcanic Formation Carneddol Rhyolitic Tuff Formation Carnethy and Hillend Group [Obsolete Name and Code: Use CAHI] Carnethy and Hillend Volcanic Formation [Obsolete Name and Code: Use CAHI] Carnethy Volcanic Member Carnhill Mugearite Carnmenellis Intrusion Carnmoney Plug Carnmore Sandstone Member Carnteel Formation [Obsolete Name And Code] Carpenters Farm Gravel Member Carperstane Sill Carr House Coal (West Yorkshire) Carr Member Carrack Formation Carraig Artair Member Carraun Shale Formation Carraun Shale Formation And Dergvone Shale Formation (Undifferentiated) Carreg Bica Mudstone Member Carreg Yr Imbill Dolerite Carreg-Y-Llam Microgranodiorite Intrusion Carrick O'Hara Formation Carrick Volcanic Formation Carrick-A-Rade Tuff [Obsolete Name And Code] Carrickabrackan Plug Carrickaness Sandstone Formation Carrickarade Vent Carrickarnan Complex Dolerites Carrickarnan Complex Granophyres Carrickateane Formation Carrickfergus Dyke [Obsolete Name And Code] Carrickmacsparrow Limestone Member Carrickmore Blackband Ironstone Carrickmore Dyke [Obsolete Name And Code] Carrickmore Granite Carrickmore Marine Band Carrickmore Sandstone Group Carrickmore Shale Member Carriteth Coal Carriteth Coal (Northumberland) Carrock Diabase [Obsolete Name and Code: Use CFCOC] Carrock Fell Complex Carrock Fell Complex [Mosedale Division] [Obsolete Name and Code: Use CFCOM] Carrock Gabbro-Microgranite Division [Obsolete Name and Code: Use CFCOC] Carrock Gabbro-Microgranite Intrusions Carrock Granophyre [Obsolete Name and Code: Use CFCOC] Carrock Series [Obsolete Name and Code: Use CFCOC] Carron Basalt Formation Carron Bridge Lava Member Carron Bridge Lavas [Obsolete Name and Code: Use CBRL] Carron Formation [Obsolete Name and Code: Use CRN] Carron Sandstone Formation Carronrigg Smithy Coal (Drumbowie) Carscallon Sandstone Carse clay (Undivided) [Obsolete Name and Code: Use CARCL] Carse Clay [Obsolete Name and Code: Use COGCL, COSCL] Carse Clay Formation Carse Clay, Claret Formation Carse Of Gowrie Clay Member [Obsolete Name And Code: Use COGW] Carse of Gowrie Member Carse of Stirling Clay Member Carse's Vein Carsey Coal Carsluith Intrusion Carsphairn Conglomerate Member Carsphairn Rudite Formation [Obsolete Name and Code: Use CAPH] Carstone (Isle Of Wight) [Obsolete Name And Code: Use MBSA] Carstone [Obsolete Name and Code: Use CA] Carstone Formation Carstone Grit [Obsolete Name and Code: Use CA] Carstone Grit of the Langton Series [Obsolete Name and Code: Use CA] Carstone Of The Isle Of Wight Cartlett Beds Carvichen Pluton Carw Formation [Obsolete Name and Code: Use TGN] Carway Fach Coal (South Wales) Carway Fawr Coal (South Wales) Cascade Beds [Obsolete Name and Code: Use CSC] Cascade Conglomerate Member Cascade Grits and Conglomerates [Obsolete Name and Code: Use CSC] Cascade Member Cassie Till Formation Cast Bed Cast Castle Formation Castell Coch Limestone [Obsolete Name and Code: Use CCL] Castell Coch Limestone Formation Castell Crug Porphyritic Microgranite Castell Formation Castell Limestone Formation Castell March Formation Castle Coal (Douglas) Castle Cornet Gneiss Castle Eden Fissure-fill Formation Castle Espie Group Castle Espie Limestone Formation [Obsolete Name and Code: Use CASP] Castle Formation Castle Haven Conglomerate Member Castle Head Dolerite Castle Hill Beds Castle Hill Flints Castle Hill Formation [Obsolete Name And Code: See GNF] Castle Hill Marls (One) Castle Hill Marls (Three) Castle Hill Marls (Two) Castle Hill Plug Castle Member [Obsolete Name and Code: Use CASSG] Castle Of Cowie Member Castle Point Member Castle Point Pelite Formation Castle Rocks Vent Castle Sand and Gravel Member Castlecary Limestone Castledikes Sandstone Castledykes Sandstone [Obsolete Name and Code: Use DBR] Castleford Four Foot Coal Castlehead Coals Castlehead Lower Coal Castlehead Upper Coal Castleton Limestones [Obsolete Name And Code] Castletown Formation-Knockrushen Member [Obsolete Name and Code: Use KNRN] Castletown Limestone Castlewood Limestone Caswell Bay Mudstone Formation Caswell Bay Oolite Formation [Obsolete Name And Code: Use GUO] Caswell Bay Oolite Formation And Caswell Bay Mudstone Formation (Undifferentiated) Cat Cleuch Formation Cat Gill Limestone Catcraig Limestone Catgill Wood Sand And Gravel Member Cathcart Sill Cathkin Braes Lava Member Caton Coal Grit [Obsolete Name and Code: Use WRST] Caton Shale Caton Shale Formation [Obsolete Name and Code: Use CSH] Caton Shale Member [Obsolete Name and Code: Use CSH] Caton Shales [Obsolete Name and Code: Use CSH] Catriona Formation Catriona Sequence [Obsolete Name and Code: Use CATR] Catsbit Limestone [Obsolete Name And Code: Use GL] Catshole Vein Coal (Pembrokeshire) Cattedown Member Catterline Conglomerate Formation Catterpallot Formation Catton Coal Cauldon Low Limestone [Obsolete Name And Code] Causemountain Formation Causeway Tholeiite Member Cautley Mudstone Formation Cautley Mudstone Formation And Ashgill Formation (Undifferentiated) Cautley Volcanic Formation [Obsolete Name and Code: Use CTV] Cautley Volcanic Group [Obsolete Name and Code: Use CTV] Cautley Volcanic Member Cave Deposits Cave Oolite Cave Oolite [Obsolete Name And Code: See ULL] Cave Oolite Member [Obsolete Name and Code: Use CVO, ULL] Cave Rock Member Cavenham Member Caw Formation [Obsolete Name and Code: Use CWT] Caw Mill Sandstone Caw Sandstone Formation Caw Tuffs [Obsolete Name and Code: Use CWT] Cawdale Member [Obsolete Name and Code: Use CAWD] Cawdale Tuff Member Cawdor Group [Obsolete Name And Code: See Revision Data] Cawdor Limestone [Obsolete Name And Code: Use EYL] Cawk Cove Member [Obsolete Name and Code: Use CWK] Cawk Cove Sandstone Member Cawledge Bend Limestone Cayton Bay Formation [Obsolete Name and Code: Use LEBB] Cayton Clay Formation Cayton Clay Formation And Cornbrash Formation (Undifferentiated) [Obsolete Code: Use CBCA] Cayton Gill Beds [Obsolete Name and Code: Use CGI] Cayton Gill Shell Bed Ceardaich Sand and Gravel Formation Cefn Bryn Shales [Obsolete Name And Code: Use AVO] Cefn Bryn Shales [Obsolete Name and Code: Use AVO] Cefn Coch Grit Member Cefn Coed Marine Band [Duplicate Lexicon Entry: Use CCDMB] Cefn Coed Marine Band [Local Name: Use AGMB] Cefn Einion Formation Cefn Formation Cefn Glas Coal (South Wales) Cefn Goch Grit [Obsolete Name and Code: Use CEG] Cefn Gwyn Tuff Cefn Gwyn Tuff Member [Obsolete Name and Code: Use CGTU] Cefn Hir Ashes [Obsolete Name and Code: Use CFH] Cefn Hir Member Cefn Mawr Limestone Formation Cefn Rock Cefn-Y-Fedw Sandstone [Obsolete Name and Code: Use CFS] Cefn-y-fedw Sandstone Formation Cefn-Y-Fedw Sandstone Group [Obsolete Name and Code: Use CFS] Cefn-Y-Fedw Series [Obsolete Name and Code: Use CFS] Cefngarreg Sandstone Formation Cefnnantmel Member Cefnyrhendy Oolite Member Ceinwen And Llanddwyn Spilitic Formation Ceiriad Formation Ceiswin Mudstone [Obsolete Name and Code: Use CSW] Ceiswyn Beds [Obsolete Name and Code: Use CSW] Ceiswyn Formation Ceiswyn Formation And Nod Glas Formation (Undifferentiated) Celtic Palaeogene Minor Intrusion Suite Celyn Beds Cemaes Group Cement Fireclay Cement-Stone [Obsolete Name and Code: Use NGRC] Cementstone Formation Cementstone Group (A) [Obsolete Name and Code: Use INV, BGN, CMNT] Cementstone Group (B) [Obsolete Name and Code: Use INV, BGN, CMNT] Cementstone Group [Obsolete Name and Code: Use BGN, TYN, INV] Cemetery Beds [Obsolete Name And Code: Part Of KC] Cemetery Coal (Burnley) Cemlyn Bay Formation Cennen Beds [Obsolete Name and Code: Use CEB] Cennen Formation Cenomanian And Turonian Rocks (Undifferentiated) Cenomanian Greensand [Obsolete Name and Code: Use MOGR] Cenomanian Limestone [Obsolete Name and Code: Use BRHD] Cenomanian sands [Obsolete Name and Code: Use MYS] Cenrhos Coal Cenrhos Coal (South Wales) Centr Central Anglesey Gneiss Complex Central Anglesey Shear Zone Central Anglesey Shear Zone And Berw Shear Zone (Undifferentiated) Central Cumbria (Albion) Glacigenic Subgroup Central Cumbria Drift Group [Obsolete Name And Code: Use CCGL Or CCAG] Central Cumbria Glacigenic Subgroup Central Grampian (Albion) Glacigenic Subgroup Central Grampian Drift Group [Obsolete Name and Code: Use CGAG, CGDR, IAG, INVG] Central Grampian Glacigenic Group [Obsolete Name and Code: Use CGDR] Central Grampian Glacigenic Subgroup Central Group [Obsolete Name and Code: Use MULC] Central Highland Division [Obsolete Name and Code: Use GLBA, CEHI] Central Highland Migmatite Complex Central Highland Migmatites [Obsolete Name and Code: Use CEHI] Central Intrusion (Rum Layered Suite) Central Intrusion (Rum Layered Suite) [Obsolete Code: Use RLC] Central Monzogranite Facies, Starav Intrusion Central Scotland Late Carboniferous Tholeiitic Dyke Swarm Central Starav Granite [Obsolete Name and Code: Use CSTAR] Central Wales Drift [Obsolete Name and Code: Use ELTI, MNTI, PLYNT] Centre 1 (Ardnamurchan Complex) [Obsolete Name and Code: Use ARD1] Centre 1 Cone-Sheet-Swarm Centre 2 (Ardnamurchan Complex) [Obsolete Name and Code: Use ARD2] Centre 2 Inner Basic Cone-Sheet-Swarm Centre 2 Outer Basic Cone-Sheet-Swarm Centre 3 (Ardnamurchan Complex) [Obsolete Name and Code: Use ARD3] Centre 3 Basic Cone-Sheet-Swarm Centre 3 Layered Gabbro Lopolith Cephalaspis Sandstone-Cornstone Cephalopod Bed Cephalopod Limestone Cerdic Formation Cerdic Sand [Obsolete Name and Code: Use NRD] Cerdic Shore [Obsolete Name and Code: Use NRD] Ceres Thick Coal Cerig Formation Cerrig Brith Formation Cerrig Gwynion Grits Facies (Caban Conglomerate Formation) Cerrig Gwynion Grits Member [Obsolete Name and Code: Use CYG] Cerrigwynion Grits [Obsolete Name and Code: Use CYG] Cethings Sandstone Member Ceunant Slates Chaigley Limestone Member Chalbury Glauconitic Member Chale Clay Member Chalfield Oolite Formation Chalfield Oolite Formation and Corsham Limestone Formation (Undifferentiated) Chalk Group Chalk Marl [Obsolete Name and Code: Use WMCH, BRHD] Chalk of Morvern [Obsolete Name and Code: Use GRIB] Chalk Of Mull - Morvern [Obsolete Name And Code: See IHEB And GRIB] Chalk Rock [Obsolete Name and Code: Use CKR] Chalk Rock Formation [Obsolete Name and Code: Use CKR] Chalk Rock Member Chalk Silt Chalk with Flints (lower part) [Obsolete Name and Code: Use WCK] Chalk with Flints (Upper Part) [Obsolete Name and Code: Use BCK] Chalk Without Flints [Obsolete Name and Code: Use FCK, FYCK] Chalk, Lower (now Lower Chalk Formation) [Obsolete Name and Code: Use LCK] Chalk, Middle (now Middle Chalk Formation) [Obsolete Name and Code: Use MCK] Chalk, Undivided, Upper (Now Upper Chalk Formation) [Obsolete Name and Code: Use UCK] Chalkey Coal (North Staffordshire) Chalky Boulder Clay [Obsolete Name and Code: Use ODT] Chalky Gravel Chalky Series [Obsolete Name and Code: Use WOY] Chalky Siltstone Member Chalky Till Chalmerston Coal (Dalmellington, South Ayrshire) Chama Sand [Obsolete Name and Code: Use CHMS] Chama Sand Formation Chama Sand Member [Obsolete Name and Code: Use CHMS] Chamber Rock Champfleurie Shale Chance Pennystone Marine Band [Duplicate Lexicon Entry: Use CPSMB] Chance Pennystone Marine Band [Local Name: Use AGMB] Changue Formation [Obsolete Name and Code: Use DLR] Channel-Fill Deposits Channelbush Coal Channelbush Limestone Chanter Member [Obsolete Name and Code: Use CHNT] Chanter Sandstone Member Chapel Den Conglomerate Formation [Obsolete Name And Code: See CATC] Chapel House Coal (Northumberland) Chapel House Limestone Formation Chapel Point Limestone [Obsolete Name And Code: Use MAHO] Chapelburn Coal Chapelgreen Coal Chapelhall Lower Fireclay Chapelhall Upper Fireclay Chapelknowe Till Formation Chapelton Burn Member Charlbury Limestone Member Charles Coal (South Staffordshire) Charles Hill Volcanic Beds [Obsolete Name and Code: Use CHVO] Charles Hill Volcanic Member Charles Marine Band [Duplicate Lexicon Entry: Use CHSMB] Charles Marine Band [Local Name: Use AGMB] Charlestown Green Limestone Charlestown Main Limestone [Obsolete Name And Code: Use BLLS] Charlestown Station Limestone [Obsolete Name And Code: Use: HUR] Charlotte Coal (South Lancashire) Charlotte Mine [Obsolete Name and Code: Use CHTC] Charlotte Mine Coal Charmandean Flint Charmouth Mudstone Formation Charmouth Mudstone Formation And Dyrham Formation (Undifferentiated) Charmouth Mudstone Formation, Dyrham Formation And Marlstone Rock Formation (Undifferentiated) Charmouth Mudstone Formation, Dyrham Formation, Marlstone Rock Formation And Whitby Mudstone Formation (Undifferentiated) Charnian Supergroup Charnwood Lodge Agglomerate Member [Obsolete Name and Code: Use CMCL] Charnwood Lodge Member [Obsolete Name and Code: Use CMCL] Charnwood Lodge Volcanic Formation Chase Coals (South Staffordshire) Chatburn Limestone Formation Chatburn Limestone Formation And Thornton Limestone Member (Undifferentiated) Chatburn Limestone Group [Obsolete Name and Code: Use CHL] Chatburn Limestone Group And Worston Shale Group (Undifferentiated) Chatelherault Sandstone Chatsworth Grit Chatwall Flags Chatwall Flags And Chatwall Sandstone (Undifferentiated) Chatwall Sandstone Chavery Coal (Derbyshire And South Yorkshire) Chavery Coal (Lower Leaf) Chavery Coal (Upper Leaf) Cheadle Breccias [Obsolete Name and Code: Use HUN] Cheddar Limestone Formation [Obsolete Name and Code: Use CDL, CDRL] Cheddar Limestone Member Cheddar Oolite Formation [Obsolete Name and Code: Use CDRO] Cheddar Oolite Member Cheddleton Sandstones Chee Tor Limestone Member Chee Tor Rock [Obsolete Name and Code: Use CT] Chee Tor Rock Member [Obsolete Name and Code: Use CT] Cheese Bay Sill Cheeveley Coal (Northumberland) [Local Code: Use BPLY] Cheevely [Obsolete Name and Code: Use BPLY] Chelford Formation [Obsolete Name and Code: Use CHFDS] Chelford Sand Formation Chelsfield Gravel [Obsolete Name and Code: Use CHGR] Chelsfield Gravel Formation Cheltenham Limestone Member Cheltenham Sand and Gravel Cheltenham Sands [Obsolete Name and Code: Use CHSG] Chemical deposits Chemiss Coal (Fife) Chemiss Den Marine Bed Chemnitzia Oolite/Limestones [Obsolete Name and Code: Use MTOL] Cheney Longville Flags [Obsolete Name and Code: Use CHLF] Cheney Longville Formation Chenier deposits Chercombe Bridge Limestone Formation Chert And Black Shale With Sandstone Bands [Within HBS] Chert Beds (Of Devon) [Obsolete Name And Code] Chert Beds (Of Flint) [Obsolete Name And Code] Chert Beds (Of West Cumberland) Chert Beds [Obsolete Name and Code: Use BHC, PECH, COH, SHWK, WHCH] Chert Bodies in Crocaden Sandstone Formation [Obsolete Name and Code: Use TCH] Chert Formation Chert Series [Obsolete Name and Code: Use TCH] Cherty Beds [Obsolete Name and Code: Use POCH] Cherty Rock of Stotfield [Obsolete Name and Code: Use STOT] Cherty Series Cherty Shale (Llangollen) [Obsolete Name And Code: See CFS] Cherwerfri Formation Cheshire - North Wales Catchments Subgroup Cheshire Coal (South Lancashire) Chester Formation Chester Pebble Beds Formation [Obsolete Name And Code Use: CHES] Chester'S Quarry Sill Cheviot Dyke Swarm Cheviot Glacigenic Subgroup Cheviot Lavas [Obsolete Name And Code: Use CHEV] Cheviot Pluton Cheviot Volcanic Formation Cheviot Volcanic Group [Obsolete Name and Code: Use CHEV] Cheviot Volcanic Series [Obsolete Name and Code: Use CHEV] Chevithorne Breccias [Obsolete Name And Code] Chick Coal (Bristol Area) Chicksgrove Limestone Member [Obsolete Name and Code: Use TIY] Chicksgrove Member [Obsolete Name and Code: Use TIY] Chief Limestone Group [Obsolete Name and Code: Use GSCL, AG] Chiefswood Vent Child Okeford Sand Member Chillesford Beds [Obsolete Name and Code: Use CFB] Chillesford Church Sand Member Chillesford Clay [Obsolete Name and Code: Use CFC] Chillesford Clay Member Chillesford Member Chillesford Sand [Obsolete Name and Code: Use CFB] Chillesford Sand Member [Obsolete Name and Code: Use CFB] Chilmark Member Chilmark Oolite Member [Obsolete Name and Code: Use CHK] Chilton Stone [Obsolete Name and Code: Use TTST] China Coal (Falkirk; Central Coalfield) China Coal (Lancashire) China Mine [Obsolete Name and Code: Use CHNC] China Mine Coal China Mine Rock [Obsolete Name and Code: Use CHMR] China Rock Chinastones Chipping Norton Formation [Obsolete Name and Code: Use CNL] Chipping Norton Limestone [Obsolete Name and Code: Use CNL] Chipping Norton Limestone Formation Chipping Norton Limestone Formation And Rutland Formation (Undifferentiated) Chirbury Formation [Obsolete Name and Code: Use CBY] Chirbury Group Chirbury Series [Obsolete Name and Code: Use CBY] Chirdon No.1 Coal Chirdon No.1 Limestone Chirdon No.2 Coal Chirdon No.2 Limestone Chlorite Sands and Sandstones [Obsolete Name and Code: Use CLLW] Chloritic Marl [Obsolete Name and Code: Use BRHD, CBG, GLML] Chloritic Sands and Sandstones [Obsolete Name and Code: Use KOS] Chonetes Polita Limestone Chonetes Shale Chopping Victoria Coal Choppington Brockwell Choppington Brookwell Coal Chorleywood Gravel Formation Christchurch Member Christy's Walls Coal Chudleigh Group Chudleigh Knighton Clay And Sand Member Chudleigh Limestone Church Bay Tuff Formation [Obsolete Name and Code: Use NXCT] Church Bay Tuffs [Obsolete See: POTRF] Church Bay Tuffs And Skerries Grits (Undifferentiated) Church Door Buttress Breccias Church Hill Dyke [Obsolete Name And Code] Churchway Coal (Forest Of Dean) Churston Member Churwell Thick Coal (West Yorkshire) Churwell Thin Coal (West Yorkshire) Chwarel Goch Facies [In Ystrad Meurig Grits Formation] Chwarelau Coal (North Wales) Chwefri Formation Ciger Coal Rock Cil-yr-ychen Limestone [Obsolete Name And Code: Use DWL] Cilan Formation Cilan Grits (In Part) [Obsolete Name and Code: Use CIG] Cilan Grits [Obsolete Name and Code: Use CIG] Ciliau Formation Cille Coals (Undifferentiated) (South Wales) Cille No.1 Coal (South Wales) Cille No.2 Coal (South Wales) Cille No.3 Coal (South Wales) Cille No.5 Coal (South Wales) Cilmaenllwyd Coal (South Wales) Cinder Bed Cinder Beds [Obsolete Name And Code] Cinder Bench Coal (South Staffordshire) Cinder Coal (South Staffordshire) Cinderford Formation [Obsolete Name and Code: Use CIFD] Cinderford Member Cinderhill Main Coal (Nottingham And Derby) Cistern Coal City Sandstone Member Clach Alasdair Conglomerate Member Clach Leatad Pluton Clachaig Semipelite And Psammite Formation Clachghlas Granite Clachnaben Granite (Mount Battock Pluton) Clachtoll Formation Clackmannan Blackband Clackmannan Diamond Coal Clackmannan Forty Inch Coal Clackmannan Four Foot Coal Clackmannan Group Clackmannan Jewel Coal Clackmannan Lower Five-Foot Coal (Clackmannan) Clackmannan Musselband Coal Clackmannan Nine Foot Coal (Clackmannan) Clackmannan Two Foot Coal Clackmannan Upper Five Foot Coal (Clackmannan) Clackmannan Yard Coal Claddens Dyke Clady Limestone Member Claerwen Group Clair Group Claisfearn Semipelite Clanyard Bay Formation Clanyard Formation Clap Round Facies Formation Claragh Sandstone Formation Claragh Sandstone Group [Obsolete Name and Code: Use CLSG] Clarborough Beds [Obsolete Name and Code: Use CLB] Clarborough Formation [Obsolete Name and Code: Use CLB] Clarborough Member Claret Beds [Obsolete Name and Code: Use CTCL] Claret Clay Member Clashbenny Formation [Obsolete Name And Code: Use GEF] Clashindarroch Formation Clashnoir Semipelite Formation Clattering Band Clauchland Sill (South Arran) Claudy Formation Claughton Flag Series [Obsolete Name and Code: Use BACB] Claughton Flags [Obsolete Name and Code: Use CLAU] Claughton Formation [Obsolete Name and Code: Use SILS, CLAU] Claughton Member Claughton Moor Shales [Obsolete Name and Code: Use CLMS] Claughton Moor Siltstone Member [Obsolete Name and Code: Use CLMS] Claughton Moor Siltstones Clava Lodge Clay Member Clava Mudstone Member Clava Sand Member [Obsolete Name And Code: Use DROY] Clava Shelly Clay Member [Obsolete Name And Code: Use CLOCL] Clava Shelly Formation Clava Shelly Till [Obsolete Name and Code: Use CLST] Clava Shelly Till Member [Obsolete Name And Code: Use CUTI] Clavellata Beds [Obsolete Name and Code: Use CLR] Clavellata Beds Formation [Obsolete Name and Code: Use CLAV] Clavellata Formation Claxby Beds [Obsolete Name And Code: Use CI] Claxby Ironstone [Obsolete Name and Code: Use CI] Claxby Ironstone Formation Claxby Ironstone Formation and Hundleby Clay Member (Undifferentiated) Claxby Ironstone Formation And Tealby Formation (Undifferentiated) Claxby Ironstone Formation, Tealby Formation And Roach Formation (Undifferentiated) Clay Coal Clay Coal (South Wales) Clay Coal [South Wales Coalfield] Clay Cross Marine Band Clay Cross Marine Band [Local Name: Use VDMB] Clay Cross Soft Coal (Derbyshire) Clay in Upper Lias [Obsolete Name and Code: Use ULC] Clay with Flints [Obsolete Name and Code: Use CWF, CHGR] Clay-with-flints Clay-with-Flints [Obsolete Name and Code: Use CWF] Clay-with-flints Formation Clayband Ironstone Formation [Obsolete Name and Code: Use CBIF] Clayband Ironstone Measures [Obsolete Name and Code: Use CBIF] Clayband Ironstone Member Claygate Beds [Obsolete Name and Code: Use CLGB] Claygate Member Claygate Member And London Clay Formation (Undifferentiated) Clayknowes Coal (Lothian) Claymore Sandstone Member Claypole Limestone [Obsolete Name and Code: Use CLPL] Claypole Limestones Bed Clays-of-the-Cornbrash [Obsolete Name and Code: Use CAYC] Clayton Marine Band Clayton Marine Band [Local Name: Use SOMB] Claywood Ironstone Cleatham Limestone Cleatham Limestone Member [Obsolete Name and Code: Use CML] Cleaver Bank Formation [Obsolete Name and Code: Use CLBK] Cleaverbank Formation Clee Formation [Obsolete Name and Code: Use CFO] Clee Group [Obsolete Name And Code: See WBK] Clee Group [Obsolete Name and Code: Use CGP] Clee Hill Microgabbro Sill-swarm Clee Sandstone Formation Cleeve Cloud Member Cleeve Hill Beds [Obsolete Name and Code: Use ROBA] Cleland Roughband Ironstone Clement Coal (South Wales) Clenchers Mill Member Clennery Scar Vein Clent Breccias [Obsolete Name And Code: See CLT] Clent Formation Clent Formation And Enville Formation (Undifferentiated) Clent Formation And Haffield Breccia Formation (Undifferentiated) Clent Group [Obsolete Name and Code: Use CLT] Clent Hills Breccia [Obsolete Name and Code: Use CLT] Clerkhill Appinite Suite Cleveland - Armathwaite Dyke. Cleveland Dyke On BGS Published Maps Cleveland Ironstone Formation Cleveland Ironstone Series [Obsolete Name and Code: Use CDI] Cleveland Sand Formation [Obsolete Name and Code: Use STA] Cleveland, Cockfield And Armathwaite Dyke [Obsolete Name and Code: Use CADY] Cleveland-Armathwaite-Barassie-Stevenson-Great Cumbrae-Toward Point Dyke [Obsolete Name and Code: Use CADY] Cleveleys Mudstone Member Clicker Tor Picrite Intrusion Cliff Coal (Milford, South Wales) Cliff End Member Cliff Member Cliff Vein [Obsolete Name and Code: Use CLFC] Cliffe Beds Cliffe Flints Cliffe Hardground Cliffe Marls (One) Cliffe Marls (Two) Clifford's Mesne Sandstone Cliffs End Greensand Bed Clift Hills 'Division' Clift Hills Phyllite [Obsolete Name and Code: Use DBHP] Clift Hills Phyllite Group [Obsolete Code: Use CLHI] Clift Hills Phyllitic 'Group' [Obsolete Name and Code: Use CLHI] Clift Hills Phyllitic Formation Clifton Down Group [Obsolete Name And Code: See PEMB] Clifton Down Group And Hotwells Group (Undifferentiated) Clifton Down Limestone Formation Clifton Down Mudstone Formation Clifton Rock Cligga Head Intrusion Climpy Gas Coal (Forth Area) Clinterty Pluton Clintsfield Coal Clintsfield Grit Clippens Peat Formation Clisiophyllum Multiseptatum Band Clitheroe Limestone "Series" [Obsolete Name And Code: Use CLL] Clitheroe Limestone Formation Clitheroe Limestone Formation (Knoll-Reef) Clitheroe Limestone Formation And Hodder Mudstone Formation (Undifferentiated) Clitheroe Limestone Series [Obsolete Name and Code: Use CLL] Cloalcleugh Coal Cloberhill Blackband Ironstone Cloberhill Coal Clochnahill Group [Obsolete Name And Code] Clock's Cleuch Coal Clod Coal (Coalbrookdale) Clod Coal (Leicestershire, South Derbyshire, Nottingham And Derby) Clod Coal (North Staffordshire) Clogau Formation Clogau Shales [Obsolete Name and Code: Use CLU] Cloghan Green Beds Cloghan Hill Limestone Member Cloghany Limestone Member Cloghastucan Chalk Formation Cloghastucan Chalk Member [Obsolete Name and Code: Use CLC] Clogher Valley Anhydrite [Obsolete Name And Code] Clogher Valley Formation Clogherny Member Clogherny Member [Duplicate Lexicon Entry: Use CGHY] Cloghfin Sponge Formation Clogwyn Gottal Tuff Clogwyn Volcanic Group Clonelly Sandstone Group [Obsolete Name And Code: Use MMS] Clonmass Formation Close Hill Siltstone Close Hill Siltstone Member [Obsolete Name and Code: Use CLHS] Closeburn Limestone Formation Cloud Hill Dolomite Formation [Obsolete Name and Code: Use HYBH, CLHD] Cloud Hill Dolostone Formation Cloud Wood Member Cloughfin Sponge Bed Member [Obsolete Name and Code: Use CSP] Cloughton Formation Clousden Hill Coal (Northumberland) Clousta Volcanic Member Clouston Hill Coal [Obsolete Name and Code: Use CNHC] Clovelly Court Shales Clown Coal Clown Marine Band Clowne Coal (Nottingham, Derby And South Yorkshire) Clowne Marine Band Cluanie Granodiorite Cluanie Suite Clun Forest Formation Clunch Clay [Obsolete Name and Code: Use OXC] Clunch Clay and Shale [Obsolete Name and Code: Use OXC] Clunch Coal (Coalbrookdale) Clune Fish Bed Clunes Complex Clwyd Group (Knoll Reef) Clwyd Limestone Group Clwyd Valley Formation Clydach Beds [Obsolete Name and Code: Use DDLM, CLD] Clydach Halt Member Clydach Valley Subgroup Clyde Beds [Obsolete Name and Code: Use PRTS, BOCH, LIWD, PAIS, KARN, CLYD] Clyde Catchments Subgroup Clyde Clay Formation Clyde Plateau Lavas [Obsolete Name and Code: Use CPV] Clyde Plateau Subsuite (Of MCLFS) Clyde Plateau Subsuite [Of SSDPV] Clyde Plateau Volcanic Formation Clyde Plateau Volcanic Group [Obsolete Name and Code: Use CPV] Clyde Plateau Volcanic Rocks [Obsolete Name and Code: Use CPV] Clyde Sandstone Formation Clyde Valley Formation Clydebank Clay Formation Clynekirkton Sandstone Formation Clynekirkton Sandstone Member [Obsolete Name And Code: See ACHSD] Clynelish Quarry Sandstone Member Clypeus Grit [Obsolete Name and Code: Use CG] Clypeus Grit and White Oolite [Obsolete Name and Code: Use CG] Clypeus Grit Member Clyst Sands [Obsolete Name And Code: See DAS] Clyst St Lawrence Formation Clyth Formation Clyth Subgroup (Helman Head Beds) [Obsolete Name And Code: See CLYTH] Clyth Subgroup [Obsolete Name and Code: Use CLYTH] Cnoc An Fhithich Banded Semipelite Formation Cnoc An Fhithich Banded Semipelite Formation And Drumchastle Pale Limestone Formation (Undifferentiated) Cnoc Bhrostan Member Cnoc Creagach Member Cnoc Donn Phyllites, Quartzites, Limestone [Obsolete Name And Code: Use DADQ] Cnoc Donn Quartzite Formation Cnoc Donn Slate [Obsolete Name And Code: Use DADQ] Cnoc Fyrish Conglomerate [Obsolete Name and Code: Use CFY] Cnoc Fyrish Conglomerate Formation Cnoc Na Sroine Quartz-Syenite Cnoc Nan Cuilean Intrusion Coa Sandstone Member Coagh Conglomerate Member Coal "Series" [Obsolete Name And Code] Coal A [Obsolete Name and Code: Use WMC] Coal Group, Upper (Durham) [Obsolete Name And Code] Coal Marker Member [Obsolete Name and Code: Use STRM] Coal Measures [Obsolete Name and Code: Use COME] Coal Measures Group Coal Measures Group (Scotland) [Obsolete Name and Code: Use CMSC] Coal Measures Group And Warwickshire Group (Undifferentiated) Coal Measures Supergroup Coal Measures, Upper (E and W) [Obsolete Name and Code: Use BME] Coal Mining [Obsolete Name and Code: Use DMU] Coal Mosie (Clackmannan) Coal Pit Formation Coal Unit [Obsolete Name and Code: Use STRM] Coalbrookdale Formation Coalbrookdale Formation. Coalburn Dross Coal Coalburn Ell Coal Coalburn Nine Foot Coal Coalburn Six Foot Coal Coalburn Smithy And Dross Coals Coalburn Smithy Coal Coalcleugh Shell Band Coalisland Marine Band Coalisland Marine Band [Local Name: Use SBMB] Coalpit Bay Mudstone Formation Coalport Formation [Obsolete Name And Code: See HA] Coalsnaughton Main Coal (Clackmannan) Coaly Unit [Obsolete Name and Code: Use PNTL] Coalypath Coal Coarse gravel and sand [Obsolete Name and Code: Use DRGR] Coastal barrier deposits Coastal deposits and glaciofluvial deposits Coastal deposits of Banffshire [Obsolete Name and Code: Use KBSI] Coastal zone deposits Coastguard Station Vent Coat Walls Mudstone [Obsolete Name and Code: Use KRM] Coat Walls Mudstone Member [Obsolete Name and Code: Use KRM] Coat Walls Mudstones [Duplicate Lexicon Entry: Use -4579] Coatbridge Balmoral Coal (Central Coalfield) Coatbridge Musselband Coatbridge Musselband Coal (Central Coalfield) Coatbridge Musselband Ironstone Coatyards Coal (Northumberland) Coatyards Limestone Coatyards Limestone [Duplicate Lexicon Entry: Use CYLM] Cobble Coal (Cheadle) Cobden Sandstone Cobham Common, Foxhills and Easthamstead Members [Obsolete Name and Code: Use SUHG] Cobham Lignite Bed Cochno Lava Member Cochno Lavas [Obsolete Name and Code: Use CCLA] Cock Burn Calcareous Schist Formation Cock Cairn Granite (Mount Battock Pluton) Cock Coal (Bristol Area) Cock Rig Formation Cockburn Formation Cockburns Law Intrusion Cocker Combe Tuff Cockerel Gravel Member Cockermouth Breccia-Conglomerate Cockermouth Lavas [Obsolete Name and Code: Use CKML] Cockermouth Lavas Formation [Obsolete Name and Code: Use CKML] Cockermouth Volcanic Formation Cockhill Limestone Cockhill Marine Band Cockington Beds [Obsolete Name and Code: Use CKF, BF] Cockleshell Coal Cockleshell Coal (South Yorkshire And Derbyshire) Cockleshell Limestone Cocklett Scar Flags [Obsolete Name and Code: Use COSS] Cocklett Scar Sandstone Cocklett Scar Sandstone Member [Obsolete Name and Code: Use COSS] Cocklett Scar Sandstones Member Cockley Beck Tuff Member Cockley How Tuff Member Cockley Pike Member [Obsolete Name and Code: Use CPK] Cockley Pike Sandstone Member Cockloft Coal (South Lancashire) Cockshead Coal (North Staffordshire) Codden Hill Beds [Obsolete Name and Code: Use COH] Codden Hill Chert [Obsolete Name and Code: Use COH] Codden Hill Chert Formation Codden Hill Group [Obsolete Name and Code: Use COH] Coddington Till Coddington Till Formation Coed Caedyrys Coal (South Wales) Coed Duon Volcanic Formation Coed Ffyddlwn Formation Coed Wenallt Beds Coed-Y-Glyn Sill Coed-yr-allt Formation [Obsolete Name And Code: See HA] Coedana Complex Coedana Granite Coeden Formation Coetmor Sandstone Member Coilacreich Intrusion Coire An Iubhair Formation Coire Cheap Formation Coire Daingean Semipelite Formation Coire Dubh Breccias Coire Eilde Tuffs Coire Na Circe Formation Coire Na Rainich Hybrid Ring-Dyke Coire Na Rainich Peridotite Raft Coire Nan Easan Tuffs Coire nan Laogh Semipelite Formation Coire Riabhach Phosphatic Formation Coire Uaigneich Granite (Cuillin Centre) Coke Coal (Bristol Area) Cokeyard Coal (Ayrshire) Coking Coal Coking Coal (Bristol Area) Coking Coal (Somerset) Col-Bhein Formation Colchester Formation Cold Ash Gravel Coldbeck Limestone Formation Coldingham Beds [Obsolete Name and Code: Use COLB] Coldingham Formation Coldwell Beds [Obsolete Name and Code: Use CDW] Coldwell Beds And Horton Flags [Obsolete Name And Code: See CDW And HNF] Coldwell Formation Coleby Mudstone Formation (part) [Obsolete Name and Code: Use CHAM] Coleby Mudstone Formation [Obsolete Name and Code: Use WHM] Coleby Mudstones [Obsolete Name And Code: Use CHAM Or WHM] Coleby Mudstones Formation Coleford Formation [Obsolete Name and Code: Use COFD] Coleford High Delf Coal (Forest Of Dean) Coleford Member Colgate Sandstone Colinburn Coal (Central Coalfield) Colinswell Marine Band Coll-Tiree Swarm Colla Firth 'Group' [Obsolete Code: Use COLA] Colla Firth Formation Colla Firth Permeation And Injection Belt Collapsed Building Collering Sandstone Collieston Formation Collin Glen Formation Collingham Head Collinwell Sands Formation Collinwell Sands Member [Obsolete Name and Code: Use CLLW] Colluvium Collyhurst Sandstone Formation Collyweston Slate Colne Valley Deposits Colonsay Group Colpatie Coal Colsay Sandstone Member Colsterdale Limestone Colsterdale Marine Beds Colwall Gelifluctate Member Colwell Bay Member Colwell Limestone Colwick Formation [Obsolete Name and Code: Use CLW] Colwick Member Comb Coal Comb Coal (South Yorkshire And Derby) Combe deposits [Obsolete Name and Code: Use COD] Combe Down Oolite [Obsolete Name and Code: Use CODO] Combe Down Oolite Member Combe Downs Member Combe Formation [Obsolete Name and Code: Use CMMU, CMSH] Combe Martin Beach Limestone Combe Martin Slates Member Combe Member Combe Mudstone Formation Combe Shale [Obsolete Name and Code: Use CMMU] Combe Shale Formation [Obsolete Name And Code: Use CMMU] Combe Wood Chert [Obsolete Name And Code: See COH] Comber Andesite Member Combined Cheltenham and Stanway Hill Formations [Obsolete Name and Code: Use BLPL] Combined Cheltenham Sand and Fan Gravel [Obsolete Name and Code: Use CHSG] Combined Oolite Marl and Upper Freestone [Obsolete Name and Code: Use SQAR] Comin Coch Formation Comley Andesites [Obsolete Name And Code] Comley Breccia Bed Comley Limestone Formation [Obsolete Name and Code: Use LCML] Comley Rocks (Undifferentiated) [Obsolete Name and Code: Use COMY] Comley Sandstone Group [Obsolete Name And Code: See LCSS And UCSS] Comley Sandstone Series [Obsolete Name and Code: Use LCSS, CMS] Commodore Formation Common Flat Limestone Compact Limestones Complex landslide deposits Complex Subsided Ground [Obsolete Name and Code: Use DDGR] Compstall Two Feet Comptoni Bed [Obsolete Name and Code: Use ACCO] Comrie Three Foot Coal Comrie Two Foot Coal Con Tom Member Conachair Granite Pluton Conan A Sequence [Obsolete Name and Code: Use CONA] Conan B Sequence [Obsolete Name and Code: Use CONA] Conan Formation Conan Sequence [Obsolete Name and Code: Use CONA] Conan Subsequence [Obsolete Name and Code: Use CONA] Conchar Formation Conchar Subsequence [Obsolete Name and Code: Use CONCH] Concretionary Limestone [Obsolete Name and Code: Use ROD, SEH] Concretionary Limestone Formation [Obsolete Name and Code: Use CNCL] Concretionary Limestone Member Concretionary Sandstone Series [Obsolete Name and Code: Use VTS] Concretionary Sandstones [Obsolete Name and Code: Use VTS] Conduit Conduit Excavation Coney Weston Sand And Gravel Member Coneypark Coxrod Coal Coneypark Lower Drumgray Coal Confinis Flags [Obsolete Name and Code: Use CNF] Confinis Flags Formation [Obsolete Name and Code: Use CNF] Confinis Formation Confusion Member Conglass Conglomerate Formation [Obsolete Name: See CGLS And Revisions] Conglass Sandstone Formation Congleton Sand [Obsolete Name and Code: Use CHFDS] Conglomerate "Series" [Obsolete Name And Code: Use SVG] Conglomerate And Grit (Uriconian Group) [Obsolete Name And Code: Part Of UO] Conglomerate Beds [Obsolete Name and Code: Use CHES] Conglomerate Of Islay-Jura Succession [Obsolete Name And Code] Conglomerates of Heavitree [Obsolete Name and Code: Use HVBR] Conglomerates of Morven [Obsolete Name and Code: Use LMOCO] Conglomeratic 'Division' of Corsewell Group [Obsolete Name and Code: Use CPC] Congo Coal (Dungannon) Coniacian To Campanian Rocks (Undifferentiated) Conisbrough Group Coniston Grit Formation [Obsolete Name and Code: Use CTG] Coniston Grits [Obsolete Name and Code: Use CTG] Coniston Grits And Studfold Sandstone [Obsolete Name And Code] Coniston Group Coniston Limestone [Obsolete Name and Code: Use DNT] Coniston Limestone Formation [Obsolete Name and Code: Use DNT] Coniston Limestone Group [Obsolete Name and Code: Use DNT] Coniston Limestone Series [Obsolete Name and Code: Use DNT] Coniston Subgroup Conksbury Bridge Basalt [Obsolete Name and Code: Use CBB] Conksbury Bridge Lava [Obsolete Name and Code: Use CBB] Conksbury Bridge Lava Member Connswater Marl Formation Conrig Formation [Obsolete Name and Code: Use KKF] Constantine Bay Slate Formation Contorta Shales [Obsolete Name and Code: Use WBY] Convoy Group [Obsolete Name And Code] Conway Rhyolite Formation [Obsolete Name and Code: Use COR] Conwy Castle Grit Member Conwy Mudstones Formation Conwy Rhyolite Formation Conwy Valley Formation Conybeare Group Conybeare Group [Duplicate Lexicon Entry: Use CNYB] Cook Formation Cook Sub-Unit [Obsolete Name and Code: Use COOK] Cookstown Limestone Coolbeg Breccia Formation Coolcran Conglomerate Member Cooldaragh Formation Coombe Coal (Nottingham And Derby) Coombe deposits Coombes Coal (Nottingham And Derby) Cooper Eye Coal (Northumberland) Coplow Knoll Series [Obsolete Name And Code: Use COPL] Coplow Limestone Member Coplow Shales [Obsolete Name And Code] Copney Pillow-Lava Formation Copper Mine Formation Coppy Hill Limestone Coprolite Bed [Obsolete Name and Code: Use CBG] Copster Green Sandstone Coquet Valley Formation Cora-Bheinn Member Coracle Sandstone Member Coral Bed Coral Knoll (in Kirton Cementstones) [Obsolete Name and Code: Use KCMK] Coral Rag [Obsolete Name and Code: Use CLRG, WYLS] Coral Rag Formation (Southern England) Coral Rag Member (Cleveland Basin) Coralea Phyllite Member Corallian [Obsolete Name and Code: Use AMC, WWB] Corallian Beds (Skye) Corallian Beds [Obsolete Name and Code: Use CR] Corallian Formation [Obsolete Name and Code: Use CR] Corallian Formation [Offshore Areas] Corallian Group Corallian Limestone [Obsolete Name and Code: Use BTF] Corallian Rocks [Obsolete Name and Code: Use CR] Coralliferous Group Coralliferous Series [Obsolete Name and Code: Use CRX] Coralline Crag [Obsolete Name and Code: Use CCG] Coralline Crag Formation Coralline knolls of patch-reef type [Obsolete Name and Code: Use KCMK] Coralline Limestone [Obsolete Name and Code: Use WLF] Coralline Oolite [Obsolete Name and Code: Use COO] Coralline Oolite Formation Corbar Grit Corbie Coal (Lothian) Corbie Craig Coal Corbie Craig Coal (Lothian) Corbie's Tongue Conglomerate Formation Corbiehall Coals Corbridge Limestone Corby Hall Intrusion Corbyn's Head Member Corfe Member Corgarff Limestone Member Corinacy Pelite Member Cork Rock Corkerhill Clayband Ironstone Corkey Rocks Plug Corkhill Sandstone Member Corley Beds [Obsolete Name And Code: See CRSA] Corley Conglomerate [Obsolete Name And Code: See CRSA] Corley Sandstone Cormorant Formation Corn Brash [Obsolete Name and Code: Use CB] Cornbrash [Obsolete Name and Code: Use CB] Cornbrash Formation Cornbrash Formation And Cayton Clay Formation (Undifferentiated) Cornbrash Formation And Cayton Shale Formation [Undifferentiated] Cornbrash Limestone Member [Obsolete Name and Code: Use CB] Cornbrook Sandstone [Obsolete Name and Code: Use COS] Cornbrook Sandstone Formation Corncockle Sandstone Formation Cornelly Oolite Formation Cornet Limestone Cornstone Beds (Of Inverness, Nairn, Banff) Cornstone Beds (Of Stirling Area) [Obsolete Name: See KNW] Cornstone Beds [Obsolete Name and Code: Use KNW] Cornstone Formation [Obsolete Name and Code: Use KNW] Cornstone-bearing Beds [Obsolete Name and Code: Use LSBU] Cornubian Catchments Subgroup Corodale Gneiss Coronation Coal (Fife) Coronea Formation Corral Coal (Dailly) Corrennie Intrusion Corrie Burn Horneblende Schist Corrie Lava Member Corrie Lavas [Obsolete Name and Code: Use CRRL] Corrie Limestone Corrie Sandstone Corrie Sandstone And Brodick And Lamlash Beds (Undifferentiated) Corrieyairack Granitic Complex [Obsolete Name and Code: Use CYACK] Corrieyairack Pluton Corrieyairack Subgroup Corrieyairack Subgroup And Glen Banchor Succession (Undifferentiated) Corrour Granulite Corry Member Corrycroar Beds Corrydon Psammite Member Corryhabbie Quartzite Formation Corsankell Limestone Corse Diamicton Formation [Obsolete Name and Code: Use CORSE] Corse Diamicton Member Corse Member [Obsolete Name and Code: Use CHLGE] Corse Of Balloch Member Corseclays Sandstone Formation Corsend Gelifluctate Bed Corsend Member, Kirkhill Formation [Obsolete Name and Code: Use CSEND] Corsewall (Point) Conglomerate [Obsolete Name and Code: Use CPC] Corsewall Formation Corsewall Group [Obsolete Name and Code: Use CLG] Corsewall Point Conglomerate Member Corsham Coral Bed Corsham Limestone Formation Corsham Member [Obsolete Name and Code: Use CSHF] Corston Coal (Bristol Area) Corstorphine Sill Corton Beds Corton Formation [Duplicate Lexicon Entry: Use CORF] Corton Formation [Obsolete Name And Code: Use HPGL] Corton Formation And Lowestoft Formation (Undifferentiated) [Obsolete Name And Code: Use HPLO] Corton Sand Member Corton Sands [Obsolete Name and Code: Use CORS] Corton Till [Obsolete Name and Code: Use CATI] Corton Till Member Corton Woods Sand And Gravel Member Corton Woods Sand And Gravels Corton Woods Sands and Gravels [Obsolete Name and Code: Use CWSG] Corvanaghan Formation Corvanaghan Formation [Obsolete Code: Use CORV] Corvie Group Corwen Grit [Obsolete Name and Code: Use CWG] Corwen Grit Member Coryton Breccias [Obsolete Name and Code: Use HVBR] Cosham Flint Cosheston Beds [Obsolete Name and Code: Use COB] Cosheston Subgroup Cot Castle Blackband Ironstone Cot Castle Clayband Cot Castle Shell Bed Cotehele Formation [Obsolete Name and Code: Use SME] Cotehele Sandstone Formation [Obsolete Name And Code: Use SME] Cotes Bottom Flint Cotgrave Place Skerry [Obsolete Name and Code: Use COT] Cotgrave Sandstone Member Cotgrave Skerry (Member) [Obsolete Name and Code: Use COT] Cotgrave Skerry [Obsolete Name and Code: Use COT] Cotgrave Skerry Member [Obsolete Name and Code: Use COT] Cothall Limestone Member Cotham Beds [Obsolete Name and Code: Use CTM] Cotham Member Cotham Member And Westbury Formation (Undifferentiated) [Obsolete: Use WBCT] Cotswold Sands Cotswold Slates [Obsolete Name and Code: Use EYF] Cotteswold Sands [Obsolete Name And Code: Use BDS] Cottonshope Basalts [Obsolete Name and Code: Use COVO] Cottonshope Lavas [Obsolete Name and Code: Use COVO] Cottonshope Volcanic Formation Coulins Burn Striped Member Coull Grit Formation Counter Head Formation [Obsolete Name and Code: Use CHST] Counter Head Siltstone Formation Coupland Sike Limestone Member Cove Harbour Sandstone Cove Limestone Member Cove Lower Limestone Cove Lower Marine Band Cove Oil Shale Bed Cove Upper Limestone Cove Upper Marine Band Cove Vein Covehithe Clay Member Coventry Sandstone (middle part) [Obsolete Name and Code: Use KRS] Coventry Sandstone [Obsolete Name and Code: Use CYS, ASY] Coventry Sandstone Formation [Obsolete Name And Code: See ASY] Covered Structure Coversands Cow Rock Conglomerate Member Cowdenbeath Ell Coal Cowdenbeath Five Foot Coal Cowdenbeath Jewel Coal Cowdenbeath Seven Foot Coal Cowdenbeath Two Foot Coal Cowdenbeath Wee Coal Cowglen Limestone [Obsolete Name and Code: Use ILS] Cowglen Rough Coal Cowglen Rough Coal (Glasgow) Cowglen Sclutty Coal Cowglen Sclutty Coal (Glasgow) Cowglen Smithy Coal (Glasgow) Cowglen Stinking Coal Cowglen Stinking Coal (Glasgow) Cowhythe Gneiss [Obsolete Name And Code: See CWPS] Cowhythe Psammite Formation Cowie Formation [Obsolete Name and Code: Use CWE] Cowie Harbour Conglomerate Member Cowie Harbour Fish-Bed [Obsolete Name And Code: Use CHSI] Cowie Harbour Siltstone Member Cowie Rock Cowie Sandstone Formation Cowlairs Sandstone Cowleaze Chine Member Cowleigh Park Beds [Obsolete Name and Code: Use CPA] Cowleigh Park Formation Cowleigh Park Formation [Obsolete Code: Use CPA] Cowpits Five Foot Coal (Lothian) Coyles Of Muick Intrusion Coylumbridge Formation Crabtree Coal (North Staffordshire And Cheadle) Crackers Coal Crackers Coal (Lancashire) Crackers Group [Obsolete Name and Code: Use ULOB, TCRS] Crackers Mine [Obsolete Name and Code: Use CRCK] Crackington Formation Crackington Formation (pars) [Obsolete Name and Code: Use DHLS, LAQU] Crackington Formation And Bude Formation (Undifferentiated) Crackington Measures [Obsolete Name and Code: Use CKF] Cracoe Limestone Formation Cradley Silts Bed Cradley Valley Formation Crafnant Volcanic Group [Obsolete Name And Code: See SV] Crag [Obsolete Name and Code: Use SZWL] Crag Group Crag Group And Bytham Sand And Gravel Formation (Undifferentiated) Crag Hill Beds [Obsolete Name and Code: Use CRHL] Crag Hill Limestone [Obsolete Name and Code: Use CRHL] Crag Hill Limestone Member Crag Limestone Craghouse Tuff Member Craghouse Tuffs Member [Obsolete Name and Code: Use CHT] Crags Vent Craid A'Bhlair Formation Craig An Daimh Gravel Formation Craig An Daimh Member Craig Cau Formation Craig Coals Craig Hen-Gae Member Craig Hill Breccia Formation Craig of Monievreckie Conglomerate Formation Craig Rofft Sandstone Member Craig Y Ffynnon Formation Craig Y Lam Formation [Obsolete Name and Code: Use CGU] Craig Y Lam Group [Obsolete Name and Code: Use CGU] Craig Y Llam Formation Craig Y Llam Group [Obsolete Name and Code: Use CYLF] Craig Yr Odyn Mudstone Member Craig-y-cwm Formation Craig-Y-Ffynnon Formation Craig-Y-Gaer Coral Bed Craig-Y-Glyn Formation Craig-Y-Glyn Group [Obsolete Name and Code: Use CGYG] Craig-Y-Llam Group [Obsolete Name And Code: See CYLF] Craiganee Formation Craigavad Sandstone Formation Craigballyharkey Tonalite Craigbardahessiagh Granodiorite Craigbreck Conglomerate Bed Craigburn Limestone [Obsolete Name And Code: Use HHLS] Craigburn Shell Bed Craigcluggan Plug Craigdouffie Lava Member Craigdouffie Lavas [Obsolete Name and Code: Use CDLA] Craigenbush Limestone [Obsolete Name and Code: Use CAS] Craigenglen Beds Craigenhill Limestone Craigentimpin Lava Member Craigentimpin Lavas [Obsolete Name and Code: Use CTLA] Craighall Conglomerate Formation Craighead Limestone [Obsolete Name and Code: Use CRDL] Craighead Limestone Formation Craighead Volcanic Formation Craighill Sandstone Group [Obsolete Name And Code: Use FELL] Craigie Coal (Dailly) Craigies Lava Member Craigievar Formation Craigleith Sandstone Craigleith Sill Craigmaddie Muir Sandstone Member Craigmaddie Muir Sandstones [Obsolete Name and Code: Use CRMS] Craigmaddie Sandstone Formation [Obsolete Name and Code: Use CRMS] Craigmaddie Sandstones [Obsolete Name and Code: Use CRMS] Craigmalloch Formation Craigmark Blackband Ironstone Craigmuschat Sill Craignish Phyllite [Obsolete Name and Code: Use DBCP] Craignish Phyllite Formation Craignook Coals (Midgeholm) Craignook Sandstone Craigrory Sandstone Bed Craigs Breccia [Obsolete Name and Code: Use DBR] Craigs Breccias Craigskelly Conglomerate Craithie Point Group Crammel Linn Sandstone Cramond Island Sill Crane Dyke Member Crane Formation Cranford Limestone Crank Coal (North Wales) Cranmore Member Crapwell Coppice Limestone Crathes Pluton Crathie Point Calc-Silicate Member Crathie Point Calcareous Flag Member [Obsolete Name and Code: Use CRPT] Crathie Schist And Limestone Formation Crathie Sheets Craven Grit Craven Group Cravenoceras Brandoni Marine Band Cravenoceras Brandoni Marine Band [Obsolete Code: Use E1B1] Cravenoceras cowlingense Marine Band Cravenoceras Cowlingense Marine Band [Obsolete Code: Use E2A1] Cravenoceras Gressinghamense Marine Band Cravenoceras Gressinghamense Marine Band [Obsolete Code: Use E2A2A] Cravenoceras leion Marine Band Cravenoceras Leion Marine Band [Obsolete Code: Use E1A1] Cravenoceras Malhamense Marine Band Cravenoceras Malhamense Marine Band [Obsolete Code: Use E1C1] Cravenoceratoides Edalensis Marine Band Cravenoceratoides Edalensis Marine Band [Obsolete Code: Use E2B1] Cravenoceratoides Nitidus Marine Band Cravenoceratoides Nitidus Marine Band [Obsolete Code: Use E2B2] Cravenoceratoides Nititoides Marine Band Cravenoceratoides Nititoides Marine Band [Obsolete Code: Use E2B3] Crawford Group Crawford Group And Moffat Shale Group (Undifferentiated) Crawfordjohn Dyke Crawfordjohn Essexite [Obsolete Name and Code: Use CRFJ] Crawfordston Coal (Ayrshire) Crawley Formation [Obsolete Name and Code: Use CRW] Crawley Member Crawshaw Sandstone Crawstone Coal (Coalbrookdale) Crawton Group [Obsolete Name And Code: See Dunnottar-Crawton Group] Crawton Volcanic Formation Crayford Brickearth [Obsolete Name and Code: Use CFSI] Crayford Brickearth Formation [Obsolete Name and Code: Use CFSI] Crayford Silt Formation [Obsolete Name and Code: Use CFSI] Crayford Silt Member Creag An Loin Psammite Formation Creag Buidhe Semipelite Formation Creag Dhubh Psammite Formation Creag Innich Sandstone Formation Creag Leacach Quartzite [Obsolete Name and Code: Use CLQU] Creag Leacach Quartzite Formation Creag Liath Pelite Member Creag Liath Psammite Formation Creag Meagaidh Psammite Formation Creag Mhor Conglomerate Creag Mhor Conglomerate Member Creag Mhor Conglomerates (Formation) [Obsolete Name and Code: Use CMC] Creag Mhor Conglomerates [Obsolete Name and Code: Use AUSA] Creag Mhor Limestone Member Creag Na Sanais Semipelite Formation Creag Nam Ban Psammite Formation Creag Nan Gall Granodiorite Creag Strollamus Granite (Skye Eastern Red Hills Centre: Phase 4) Creagan Formation Creagan Group [Obsolete Name and Code: Use DBCG] Creagan Loisgte Member Crease Limestone [Obsolete Name And Code: Use GUO] Crease Limestone And Whitehead Limestone (Undifferentiated) Crease Limestone Formation [Obsolete Name and Code: Use GUO] Crediton Beds [Obsolete Name and Code: Use CRBR] Crediton Breccia Formation Crediton Breccias [Obsolete Code: Use CRBR] Crediton Conglomerates [Obsolete Name and Code: Use CRBR] Creech Barrow Limestone Member Creech Brick Clay Member Creedy Park Sandstone Formation Creekmoor Clay Member Creekmoor Sand Member Creepie Coal (Sanquhar) Creeslough Formation Creeslough Formation And Ards Black Schist (Undifferentiated) Creetown Granite Creg Agneash Sandstone Formation Cregennen Formation Creggan Chalk Formation Creggan Chalk Member [Obsolete Name and Code: Use CGCK] Creggan Moar Mudstone Formation Creigiau Brithion Formation [Obsolete Name and Code: Use BRT] Crendon Sand Creran Bridge Quartzite Formation Creran Flags Formation Cressbrook Dale Lava [Obsolete Name and Code: Use CBDL] Cressbrook Dale Lava Member Cretaceous Rocks (Undifferentiated) Cretaceous rocks [Obsolete Name and Code: Use IHEB] Crewi Formation Crewyn Formation Cribarth Formation Cribbwr Fach Coal (South Wales) Cribbwr Fach Coal [South Wales Coalfield] Cribbwr Fawr Coal (South Wales) Cribbwr Fawr Coal [South Wales Coalfield] Cribyn Ddu Member Crichope Sandstone Member [Obsolete Name And Code: Use TWN] Crickley Limestone and Crickley Oncolite [Obsolete Name and Code: Use CRKY] Crickley Member Crickmail Limestone [Obsolete Name And Code: Use OHL] Crieve Hill Oolite [Obsolete Name And Code] Criffel Granite, Criffel and Dalbeattie (Granite) Mass [Obsolete Name and Code: Use CDPL] Criffel-Dalbeattie Granodiorite Complex Criffel-Dalbeattie Pluton Crigglestone Rock Crinan Grit Crinan Grit Formation Crinan Grits [Obsolete Name and Code: Use DBCR] Crinan Subgroup Crinan Subgroup And Tayvallich Subgroup (Undifferentiated) Crinan Subgroup Caenlochan Schist [Obsolete Name and Code: Use TUSC] Cringate Interbasaltic Beds [Obsolete Name and Code: Use CRNV] Cringate Volcaniclastic Member Criniod Grit [Obsolete Name and Code: Use CRG] Crinkle Member [Obsolete Name and Code: Use CRK] Crinkle Tuff Member Crinkle Tuffs [Obsolete Name and Code: Use CRK] Crinoid Bed Crinoid Grit Member Croaghgarrow Formation Croaghubrid Dark Schists [Obsolete Name and Code: Use DBCS] Croaghubrid Pelite Formation Crocadon Formation [Obsolete Name And Code: Use SME] Crockanaver Limestone Member Crockey Hill Esker Member Crocknagargan Beds [Obsolete Name And Code] Croft Member Crofthead Coal Crofthead Slatyband Ironstone Crofts End Marine Band [Duplicate Lexicon Entry: Use CSEMB] Crofts End Marine Band [Local Name: Use AGMB] Crogenen Slates [Obsolete Name and Code: Use CREN] Croisaphuill Formation Croisaphuill Group [Obsolete Name and Code: Use CAP] Crom Psammite Formation Cromar Pluton Cromarty Fish Bed Cromarty Sand Member [Obsolete Name and Code: Use BNSA] Cromarty Sandstone Member Cromdale Hills Quartzite Member Cromer Diamicton [Obsolete Name and Code: Use BGTI] Cromer Forest Bed Series [Obsolete Name and Code: Use WRCG] Cromer Forest-bed Formation Cromer Knoll Group Cromer Member [Obsolete Name and Code: Use BGTI] Cromer Till (Lowest Member) Cromer Till (Sand Member) [Obsolete Name And Code: See Revision Note] Cromer Till (Upper Member) [Obsolete Name And Code: Meaning Uncertain] Cromer Till [Obsolete Name And Code: See Revision Note] Cromerian Complex Interglacial 2 To Elsterian Deposits, Undifferentiated (Offshore) Cromerian Complex Interglacial 2 To Elsterian Mud And Sand, Interbedded (Offshore) Cromerian Complex Interglacial 2 To Elsterian Sand (Offshore) Cromerian Complex Interglacial 2 To Saalian Channel Fill Deposits, Undifferentiated (Offshore) Cromerian Complex Interglacial 2 To Saalian Diamicton, Firm To Hard (Offshore) Cromerian Complex Interglacial 2 To Saalian Mud And Sand, Interbedded (Offshore) Cromhall Coal (Bristol Area) Cromhall Sandstone Formation Cromlix Formation [Obsolete Name and Code: Use CXF] Cromlix Mudstone Formation Cromlox Mudstone Formation Cronk Sumark Slate Cropper Gate Rock [Obsolete Name and Code: Use BRSR] Cropthorne Member [Obsolete Name and Code: Use CRTD] Cropthorne Sand and Gravel Member Cropthorne Terrace Deposits [Obsolete Name and Code: Use CRTD] Cropwell Bishop Formation [Obsolete Name and Code: Use BCMU] Crosby Thwaite Formation [Obsolete Name And Code: Subsumed Within WNY] Cross Hands Rock Cross Hill Andesite Cross Lane Limestone [Obsolete Name and Code: Use CSLL] Cross Lane Limestones Bed Cross Slieve Group Cross-Bedded Quartzite [Obsolete Name and Code: Use BAQ, FBQ] Cross-Bedded Series [Obsolete Name and Code: Use MRG] Crossbasket Ironstones Crossbrae Farm Peat Bed Crossbrae Gelifluctate [Obsolete Name and Code: Use CBGEL] Crossbrae Gelifluctate Bed Crossbrae Head [Obsolete Name and Code: Use CBGEL] Crossbrae Member [Obsolete Name and Code: Use CBFMP] Crossbrae Member, Kirkhill Formation [Obsolete Name and Code: Use CBFMP] Crossbrae Peat [Obsolete Name and Code: Use CBFMP] Crossbrae Till Formation Crossdale Grit Crossdale Mudstone Crossdale Mudstone Formation [Obsolete Name and Code: Use SILS, CROM] Crossdale Shales [Obsolete Name and Code: Use CROM] Crossgates Sandstone Crosshouse Sill Crossi Bed [Obsolete Name And Code] Crosskirk Bay Formation Crosskirk Flagstone Formation [Obsolete Name and Code: Use CKBA] Crossopodia Shales Crosspodia Shales and Penkill Flags [Obsolete Name and Code: Use PKF] Crossridge Formation [Obsolete Name and Code: Use CMBN] Crosswood Ash Croughton Member [Obsolete Name and Code: Use SHIP] Crousa Down Gravel Beds [Obsolete Name and Code: Use COGR] Crousa Gravels Crovie Conglomerate [Obsolete Name and Code: Use DCST] Crovie Group [Obsolete Name and Code: Use CRO] Crovie Sandstone [Obsolete Name and Code: Use DCST] Crovie Sandstone Group Crovie Till Member Crow Cherts Crow Coal (A) [Obsolete Name and Code: Use CRWC] Crow Coal (B) [Obsolete Name and Code: Use CROC] Crow Coal (Cumbria) Crow Coal (Dungannon: Duckmantian) Crow Coal (Dungannon: Pendleian) Crow Coal (Durham) Crow Coal (Ingleton) Crow Coal (West Yorkshire) Crow Delf Coal (Forest Of Dean) Crow Hill Conglomerate And Sandstone Member Crow Limestone Crow Sandstone Crowberry Ridge Tuff Crowland Bed Crown Coal (North Wales) Crown Coal (North Wales) [CWNC] Crows-Foot Coal (South Wales) Croxton Sand And Gravel Member Cruachan Formation Cruachan Intrusion Cruachan Phase, Starav Granite [Obsolete Name and Code: Use CRUA] Crug Limestone Crugan Mudstone Formation Crugan Mudstones [Obsolete Name and Code: Use CRMU] Cruiser Formation Crumbouke Coal (South Lancashire) Crumbouke Mine [Obsolete Name and Code: Use CRUM] Crumbouke Mine Coal Crummack Formation Crummock Water Intrusion Crumpy Coal Crutchman Sandstone [Obsolete Name And Code: Use MLRS] Crutherland Coals Crutherland Coals And House Coal Crychan Formation Crying Crag Sandstone Cryne Coal (Lothian) Cuckfield Stone [Obsolete Name and Code: Use CKST] Cuckfield Stone Bed Cuckfield Stone Member [Obsolete Name and Code: Use CKST] Cucklington Oolite [Obsolete Name and Code: Use CLR] Cucklington Oolite Member Cuckmere Beds Cuckmere Flint Cuckmere Valley Formation Cuckoo Coal (Bristol Area) Cudworth Coal (Yorkshire) Cuil Bay Slate Formation Cuil Bay Slates [Obsolete Name and Code: Use DACB] Cuilfail Zoophycus Flint Cuillin Centre (Skye Central Complex) Cul Nan Gad Pluton Culbokie Silt Formation Culchavie Striped Formation Culdaff Limestone Culdoich Till Member Culfargie Beds [Obsolete Name and Code: Use CUSA] Culfargie Sand Member Culham Sands with Cherts Member Cullaidh Shale Formation Cullardoch Diorite Cullen Quartzite [Obsolete Name And Code: Use CUQU] Cullen Quartzite Formation Cullivait Silts Formation Cullivoe Lens Member Culm [Obsolete Name and Code: Use CHUD, CU] Culm Group [Obsolete Name and Code: Use CU] Culm Measures [Obsolete Name and Code: Use CU, SME] Culm Measures and Upper Devonian Slates [Obsolete Name and Code: Use BREN] Culm Supergroup Culnagrew Sandstone Formation Culvennan Intrusion Culver Chalk Formation Culver Chalk Formation And Norfolk Chalk Formation (Undifferentiated) Culver Chalk Formation And Portsdown Chalk Formation (Undifferentiated) Culver Chalk Member [Obsolete Name and Code: Use CUCK] Cumberworth Thin Coal (South Yorkshire) Cumbrae-Stevenston Dyke Cumbria-Lancashire Catchments Subgroup Cumbrian Coast Group Cumbrian Esk Alluvium Member Cumbrian Esk Valley Formation Cumbriense Marine Band [Obsolete Name and Code: Use CBMB, G1B1] Cumcrook Limestone Cumnock Claud Coal (South Ayrshire) Cumnock Ell Coal (South Ayrshire) Cumnock Fifty Fathom Coal (South Ayrshire) Cumnock Forty Fathom Coal (South Ayrshire) Cumnock Low Ell Coal Cumnock Major Coal (South Ayrshire) Cumnock Musselband Coal (South Ayrshire) Cumnock Thirty Inch Coal (South Ayrshire) Cumnock Three Dirt Coal (South Ayrshire) Cumnock Twenty Three Fathom Coal (South Ayrshire) Cumnor Formation [Obsolete Name And Code: Use STFD] Cuniger Rock Marine Band Curdly Ironstone Curly Coal (South Wales) Curragh Formation Curran Point Halite Member Currarie Formation Curving Coal (South Wales) Cushat Limestone Cushendall Formation Cushendall Porphyry Cushendun Conglomerate [Obsolete Name and Code: Use CCC] Cushendun Formation Cushendun Granodiorite Cushnie Pluton Cut Away Landscape Cutcombe Slates Member Cuthill Limestone Member Cutn, Crow Coal (West Yorkshire) Cutties Hillock Sandstone Cwar Glas Member Cwm Barn Formation Cwm Berem Marine Band Cwm Berem Marine Band [Local Name: See LGMB] Cwm Clwyd Ash [Obsolete Name And Code: See CCT] Cwm Clwyd Tuff [Obsolete Name and Code: Use CCT] Cwm Clwyd Tuff Formation [Obsolete Name And Code: Use CGTU] Cwm Clwyd Tuff Formation [Obsolete Name and Code: Use CGTU] Cwm Clyd Sandstone Cwm Crychan Formation [Obsolete Name And Code: Use TRE, and BRNY or CRYH as appropriate to the area] Cwm Degwel Mudstone Member Cwm Eigiau Formation Cwm Eigiau Formation And Lower, Middle And Upper Crafnant Formations (Undifferentiated) Cwm Eigiau Formation And Pen-Ychain Rhyolitic Complex (Undifferentiated) Cwm Graig Ddu Formation Cwm Gwaun Formation Cwm Hesgen Formation [Obsolete Name and Code: Use DYN] Cwm Mawr Coal (South Wales) Cwm Yr Aethnen Mudstones [Obsolete Name and Code: Use CYA] Cwm Yr Aethnen Mudstones Formation Cwm Yr Aethnen Shales [Obsolete Name and Code: Use CYA] Cwm-Amliw Group [Obsolete Name and Code: Use CMA] Cwm-Amliw Series [Obsolete Name and Code: Use CMA] Cwm-Amliw Tuff Formation Cwm-Yr-Eglwys Formation Cwm-Yr-Hob Member Cwmbarn Member [Obsolete Name and Code: Use CWN] Cwmbyr Coal (South Wales) Cwmcringlyn Formation Cwmere Formation Cwmffrwd Formation Cwmhesgen Formation [Obsolete Name And Code: See DYN, DLU] Cwmmawr Coal (South Wales) Cwmorthin Formation [Obsolete Name and Code: Use ALL] Cwms Rhyolites [Obsolete Name And Code] Cwmsymlog Formation [Obsolete Name And Code: See RHS] Cwmyniscoy Mudstone Formation Cwmystwyth Grits Group Cwrt-yr-ala Formation Cymerig Limestone [Obsolete Name and Code: Use CY] Cymerig Limestone Member Cyrena Limestones [Obsolete Name and Code: Use VTS] Cyrtograptus Grayi Mudstones [Obsolete Name And Code: Use LAU] Cystoid Limestone [Obsolete Name and Code: Use CYO] Cystoid Limestone Member D-Bed Evaporite D2 Limestones [Obsolete Name and Code: Use CFML] Dab Limestone Unit Dabchick Coal (Somerset) Dacite Group [Obsolete Name and Code: Use STAD] Daddyhole Limestone [Obsolete Name and Code: Use DHL] Daddyhole Member Dailly Ell Coal Dailly Ground Coal Dailly Group [Obsolete Name And Code: Use DAI Or STNG Depending On Age] Dailly Main Coal Dailly Parrot Coal Dailly Series [Obsolete Name and Code: Use DLY, PNO, DAI] Dailly Subgroup Dailly Wee Coal Dalby Group Dalcharn Biogenic Formation [Obsolete Name and Code: Use DNPS] Dalcharn Biogenic Member [Obsolete Name and Code: Use DMBG] Dalcharn Cryoturbate Member [Obsolete Name and Code: Use RECR] Dalcharn Gravel Formation [Obsolete Name and Code: Use CDGR] Dalcharn Lower Till Formation [Obsolete Name and Code: Use ATTI] Dalcharn Palaeosol Formation Dalcharn Upper Till Formation [Obsolete Name and Code: Use CYTI] Dale Head Breccia Member Dale Head Member [Obsolete Name and Code: Use DHD] Dales Voe Grit [Obsolete Code: Use DAVO] Dales Voe Grit Formation [Obsolete Name and Code: Use DAVO] Dales Voe Grit Member Dalharco Limestone Dalkeith Under Coal (Lothian) Dalkeith Upper Coal (Lothian) Dalla Bank Limestone Dallabank Limestone Dallas Psammite Formation Dalmahoy Oil-Shale Dalmahoy Shale Dalmahoy Sill Dalmanella Lunata Beds [Obsolete Name and Code: Use CEF] Dalmary Sandstone Member Dalmellington Blackband Ironstone Dalmellington Diamond Coal Dalmellington Ell Coal Dalmellington Extra Coal Dalmellington Lower Diamond Coal Dalmellington Major Coal Dalmellington Two Foot Coal Dalmellington Upper Diamond Coal Dalmellington Upper Ell Coal (South Ayrshire) Dalness Breccias Dalness Ignimbrite Member Dalradian Rocks (Undifferentiated) [Obsolete Name And Code: See DALN] Dalradian Supergroup Dalradian Supergroup And Moine Supergroup (Undifferentiated) Dalreoch Division [Obsolete Name and Code: Use DLR] Dalreoch Formation Dalroy Sand Member Dalry Blackband Ironstone Dalry Clayband Ironstone Dalry Sandstone Formation [Obsolete Name And Code: Part Of LSC] Dalry Sandstone Member Dalserf Mussel Band (Central Coalfield) Dalswinton Moraine Formation Dalton Beds [Obsolete Name and Code: Use DLB] Dalton Formation Dalton Limestone (Northumberland) Dalton Rock Daltulich Psammite Formation Daltulich Semipelite Formation [Obsolete Name and Code: Use DALT] Dalvrecht Slate Formation Dalzell Works Lingula Band Dam House Bridge Tuff Member Dam or Barrage Damery Beds Dandy Coal Dandy Coal (Lancashire) Dandy Mine [Obsolete Name and Code: Use DYCO] Dandy Mine Coal Dandy Rock Dane Hills Sandstone Group [Obsolete Name and Code: Use AS] Dane Hills Sandstone Member [Duplicate Lexicon Entry: Use DHSM] Dane Hills Sandstone Member [Obsolete Name and Code: Use AS] Danian Rocks (Undifferentiated) Danian To Ypresian Rocks (Undifferentiated) Danny Bridge Limestone Formation Daren Rhestyn Coal (South Wales) Daren-Ddu Coal (South Wales) Daren-Ddu Rider Coal (South Wales) Dargan Limestone Formation Dark Grey Mudstone [Obsolete Name and Code: Use DMM] Dark Grey Mudstone Member [Obsolete Name And Code: See MSW] Dark Grey Mudstone Member [Obsolete Name and Code: Use MSW] Dark Group Dark Group of Blair Atholl Series [Obsolete Name and Code: Use DLDS] Dark Limestone Dark Limestone and Dark Schist within Blair Atholl Subgroup [Obsolete Name and Code: Use DLDS] Dark Schists Dark Slade Member Darlington Clay Formation Darnford Conglomerate Member Darnley Coal Darnley Fireclay Darren Ddu Limestone Member Darroch Coal (North Ayrshire) Dart Formation Dart Formation [Obsolete Code: Use DART] Dart Formation [Obsolete Entry: Use DART] Dart Formation [Obsolete Name and Code: Use DART] Dart Schists [Obsolete Name and Code: Use DCDS] Dartford Silt [Obsolete Name and Code: Use DASI] Dartford Silt Member Dartington Limestone Member Dartmoor Granite Dartmoor Intrusion Dartmouth Beds [Obsolete Name and Code: Use DRTM, DTB] Dartmouth Group Dartmouth Group [Obsolete Name And Code: Use DRTM] Dartmouth Slates [Obsolete Name And Code] Dartry Limestone Formation Darvel Lava Member Darvel Lavas [Obsolete Name and Code: Use DLLA] Darwen Flags Darwin Formation Dash Picrite [Obsolete Name And Code] Dasses Sill Daugh Coal (Sanquhar) Daugleddau Group Dava Subgroup Dava Succession [Obsolete Name and Code: Use DAVA] David's Hole Beds David's Stone Limestone Daviot Conglomerate Formation Davy Coal Dawlish Sands [Obsolete Name and Code: Use DAS] Dawlish Sandstone [Obsolete Name and Code: Use DAS] Dawlish Sandstone Formation Dawlish Sandstones [Obsolete Name and Code: Use DAS] Dawlish sandstones and breccias [Obsolete Name and Code: Use DAS] Dayia Beds Daylesford Member Ddolhir Beds [Originally Dolhir] Ddugaled Coal (South Wales) Ddwyryd Shales [Obsolete Name and Code: Use NOG] Dean Coal (Durham) Deanshillock Gravel Formation Dearcaige Quartzite Member Dearg Member Dearg Till Formation [Obsolete Name and Code: Use SUTI] Debris cone [Obsolete Name and Code: Use TCON] Debris flow deposits Deception Coal (Lothian) Deckanhydrit Dee Bridge Sandstone Dee Valley Formation Deep Coal (Coalbrookdale) Deep Coal (South Staffordshire) Deep Conglomerate Formation Deep Hard Coal (South Yorkshire, Nottingham And Derby) Deep Hard Rock Deep Main Coal (Vale Of Belvoir) Deep Rider Coal Deep Rider Coal (Warwickshire) Deep Soft Coal (Nottingham And Derby) Deep Soft Rock Deep Yard Coal (South Lancashire) Deepdale Formation [Obsolete Name and Code: Use DPD] Deepdale Sandstone Formation Deepmine Coal Deer Park Andesite Deer Park Shales Deerhope Burn Flagstones [Obsolete Name And Code: Use DHP] Deerhope Formation Deerhope Siltstones [Obsolete Name And Code: Use DHP] Deerness Volcanic Member Deeside Limestone [Obsolete Code: Use DLI] Deeside Limestone Formation Deeside Subsuite Defence Establishment Deformation till Deganwy Mudstone [Obsolete Name And Code: Use COMU] Degnish Limestone [Obsolete Name and Code: Use DBDL] Degnish Limestone Formation Delabole Member Delabole Slates [Obsolete Name and Code: Use UDSL, TVY, DLBS, TSL] Delamere Sandstone Member Delnabo Conglomerate Formation Delnadamph Volcanic Member Delta Bench Coal (North Wales) Delta Coal (North Wales) Demesne Limestones Demetae Group Den Coal (Fife) Den Siltstone Formation [Obsolete Name and Code: Use BRMU, DSF] Den Siltstone Member Denbigh Grits (Now Formation) Denbigh Grits Formation Denbigh Grits Group [Obsolete Code And Rank: See DG] Denbigh(shire) Grits [Obsolete Name and Code: Use DFG] Denbighshire Grits and Shales [Obsolete Name and Code: Use PEG] Denbury Crinoidal Limestone [Obsolete Name and Code: Use DCL] Denbury Crinoidal Limestone Formation Denend Gravel Formation Denend Member [Obsolete Name and Code: Use DNDGR] Denham Valley Terrace Denham Valley Terrace Deposits Denny Lower Blackband Ironstone Denny Muir Lava Member Denny Muir Lavas [Obsolete Name and Code: Use DMLA] Denny Upper Blackband Ironstone Dennyloanhead Ball Coal Denstone Formation [Obsolete Name and Code: Use TPSF] Dent Group Denton Mill Limestone Derbyhaven Beds [Obsolete Name and Code: Use DBH] Derbyhaven Formation Derenenach Mudstone Formation Derfel Limestone Member Dergvone Shale Formation Deri Beds [Obsolete Name and Code: Use DER] Deri Formation Derlwyn Formation Derreens Limestone Member Derry Coal (Dungannon) Derrycreevy Sandstone Formation Derrygonnelly Sandstone Formation [Obsolete Name And Code] Derryhill Lava Member Derryloran Formation Derryloran Grit Formation [Obsolete Name And Code: Use DLN] Derryloran Grit Formation [Obsolete Name and Code: Use DLN] Derryloran Grit Member [Obsolete Name and Code: Use DLN] Derryloran Grits [Obsolete Name and Code: Use DLN] Derryvale Sandstone [Obsolete Name And Code] Derryvree Till [Obsolete Name And Code] Dersingham Beds [Obsolete Name and Code: Use DEB] Dersingham Beds/Snettisham Clay [Obsolete Code: See DEB And SNC] Dersingham Formation Derwenlas Formation Derwyddon Sandstone Formation Desertcreat Group Desertmartin Limestone Formation Desoglin Limestone Developed Farmland Developed Habitat Developed Parkland Devil's Bridge Formation Devil's Chimney Oolite [Obsolete Name and Code: Use CLCL] Devil's Chimney Oolite and Cleeve Hill Oolite [Obsolete Name and Code: Use CLCL] Devil's Chimney Oolite and Fiddler's Elbow Limestone [Obsolete Name and Code: Use CLCL] Devil's Hole Sandstone Member Devoke Water Greisen Devoke Water Member [Obsolete Name and Code: Use DKT] Devoke Water Tuff Member Devon Red Sandstone Devonian And Carboniferous Rocks (Undifferentiated) Devonian Fintona Group [Obsolete Name and Code: Use SLI] Devonian Rocks (Undifferentiated) Dhoon Pluton Diabaig Formation Diamicton Diamond Coal Diamond Coal (North Staffordshire) Diamond Coal (Northumberland) Diamond Coal (Patna) Diamonds Ironstone (South Staffordshire) Diamonds Ironstone And Silver Threads Ironstone (Undifferentiated) (South Staffordshire) Diatomite Dibhole Coal (West Yorkshire) Dibidil Grit Member Dicky Gobbler Coal (South Derbyshire) Dicky Hare Cove Flags [Obsolete Name and Code: Use DICH] Dicky Hare Member [Obsolete Name and Code: Use DICH] Dicky Hare Semipelite Member Dicranograptus Shales [Obsolete Name And Code] Dictyocaris Member [Obsolete Name And Code: Use CHSI] Dictyocaris Member [Obsolete Name and Code: Use CHSI] Diddup Limestone Didymograptus Bifidus Beds Didymograptus Bifidus Beds And Didymograptus Murchisoni Beds (Undifferentiated) Didymograptus Shales [Obsolete Name and Code: Use SMU] Didymograptus Superstes Mudstones [Obsolete Name and Code: Use SMU] Diebidale Pelite Formation Digg Siltstone Member Dilhorne Coal (Cheadle) Dilhorne Coal (Derbyshire) Dimlington Bed (Dimlington Silts) Dinantian Dykes (Within MCPAD) Dinantian Intrusion (Within MCPAI) Dinantian Rocks (Undifferentiated) Dinantian To Westphalian Sills Of Lothians And Fife Dinantian Volcanic Rocks (Undifferentiated) Dinas Bran Beds [Obsolete Name and Code: Use DBG] Dinas Bran Formation Dinas Bran Group [Obsolete Name and Code: Use DBG] Dinas Dolerite Dinas Island Formation Dingle Beds (Lower Old Red Sandstone) [Obsolete Name and Code: Use KILS] Dingle Beds [Obsolete Name and Code: Use FIN, TPMS, BRC, BLM] Dingle Conglomerate Member Dingle Mudstone Member Dinorwic Formation [Obsolete Name And Code: Use REL] Dinwoodie Beds Dionide Beds Diplograptus Modestus Shales [Obsolete Name: Use GLSH] Dippal Burn Formation Dippin Sill (South Arran) Dipple Fish Bed Dipton Burn Marine Beds Dipton Foot Shell Bed Dirk Sandstone Member Dirleton Plugs Dirrington Great Law Sill Dirt Coal Dirt Pot Grit Dirty Coal (South Wales) Dirty Rider Coal (South Wales) Discovery Coal (Lancashire) Diseworth Member [Obsolete Name and Code: Use DIS] Diseworth Sandstone Dissolution Mining Distinkhorn Dyke Swarm Distinkhorn Pluton Disturbed Blackheath Beds Disturbed Ground Ditcheat Clay Member Dittisham Member Ditton Group [Obsolete Name and Code: Use DTG] Ditton Marine Band Ditton Marine Band [Local Name: See BJMB] Ditton Subgroup Diver Coal Division 3 (sandy clays) [Obsolete Name and Code: Use BKGS] Division 4 (sands with chert and ironstone) [Obsolete Name and Code: Use FHMS] Division A3 of King (1981) [Obsolete Name and Code: Use OCKD] Division B and the lower part of Division C of King, 1981 [Obsolete Name and Code: Use AVLY] Division D [Obsolete Name and Code: Use MFLD] Division D Of The Bristol Area Dixon Ground Member Doagh Limestone Member Dobb's Plantation Member Dobbie's Vein Dobbin Sandstone Formation Dock Dockra Limestone [Obsolete Name And Code: Use BLLS] Doctors Coal Doctors Mine Marine Band Doctors Mine Marine Band [Local Name: See HTMB] Doddiscombe Beds [Obsolete Name and Code: Use DDC] Doddiscombe Formation Doddiscombe Formation And Codden Hill Chert Formation (Undifferentiated) Dodington Ash Rock Member Dodman Formation Dodman Phyllites [Obsolete Name and Code: Use DMN] Dodman Series [Obsolete Name and Code: Use DMN] Dodman Series/Dodman Phyllites [Obsolete Name and Code: Use DMN] Doe Coal (South Lancashire) Doe Mine [Obsolete Name and Code: Use DOEM] Doe Mine Coal Doethie Formation Dog Crag Tuff Member Dog Falls Psammite Formation Dogger [Obsolete Name and Code: Use NS, DGR] Dogger Bank Formation Dogger Formation Dogger Formation and Saltwick Formation (Undifferentiated) Dogger Formation, Saltwick Formation, Eller Beck Formation and Cloughton Formation (Undifferentiated) Dogger Ironstone [Obsolete Name and Code: Use DGR] Doggy Coal Doghole Coal (South Lancashire) Doghole Mine Rock [Obsolete Name and Code: Use DHMR] Doghole Rock Dol-Cyn-Afon Formation Dol-Cyn-Afon Member [Obsolete Name and Code: Use DYN] Doldowlod Conglomerate Member Dolfawr Mudstones Formation Dolgarrog Volcanic Formation Dolgau Mudstone Formation [Obsolete Name and Code: Use DGU] Dolgau Mudstones [Obsolete Name and Code: Use DGU] Dolgau Mudstones Formation Dolgau Mudstones Formation (Lower Tongue) Dolgau Mudstones Formation (Upper Tongue) Dolgellau Formation Dolgellau Formation And Dol-Cyn-Afon Formation (Undifferentiated) Dolgellau Member [Obsolete Name and Code: Use DLU] Dolgelly Beds [Obsolete Name And Code: Use DLU] Dolhir Beds [Obsolete Name and Code: Use DO] Dolhir Formation Doll Member Dollis Hill Gravel Formation [Obsolete Name and Code: Use DHGR] Dollis Hill Gravel Member Dolomite Beds (Of Appin) [Not Appin Dolomite] [Obsolete Name And Code] Dolomitic Beds [Obsolete Name and Code: Use TEDO] Dolomitic Conglomerate [Obsolete Name And Code: See MMMF] Dolomitic Conglomerate And Red Marl [Obsolete Name And Code: See MMMF] Dolphinholme Mudstone Dolphinholme Mudstone Formation [Obsolete Name and Code: Use DLP] Dolwen Formation Dolwen Grits [Obsolete Name and Code: Use DOG] Dolwen Mudstones [Obsolete Name And Code: Use BMM] Dolwen Mudstones Formation [Obsolete Name and Code: Use DMF] Dolyfan Conglomerate Member Dolyhir Limestone Formation Don Group [Obsolete Name And Code: See ZG] Donaghadee Sandstone Formation [Obsolete Name And Code] Donald's Hill Ignimbrite Formation Donegal Appinite Suite Donegore Plugs [Obsolete Name And Code] Donside Gneisses [Obsolete Name and Code: Use CRR] Doobally Sandstone Member Doolie Ness Conglomerate Formation [Obsolete Name and Code: Use DNCO] Doolie Ness Conglomerate Member Doon Dyke Swarm Doon Hill Conglomerate [Obsolete Name and Code: Use DHLC] Doon Hill Conglomerate Member Doon Limestone Doonbought Plug Dora Villa Dyke [Obsolete Name And Code] Dorback Intrusive-Complex Dores Sandstone Dornabac Member (Central Intrusion, Rum Layered Suite) Dornabac Member (Central Intrusion, Rum Layered Suite) [Obsolete Code: Use RLC1] Dornoch Formation Dornoch Mudstone unit Dorrery Sandstone Formation [Obsolete Name and Code: Use DRSM] Dorrery Sandstone Member Dorset Anhydrite [Obsolete Name And Code] Dorset Stour Formation Double Coal (Coalbrookdale) Double Coal (Warwickshire) Double Coal Rock Doubler Stones Sandstone Dougaled Coal (South Wales) Dougaled Rider Coal Dougaled Rider Coal (South Wales) Doughend Sandstone Member Douglas Bridge Limestone Member Douglas Coal Douglas Ell Coal Douglas Fireclay Member Douglas Four Foot Coal Douglas Humph Coal Douglas Main Coal (Douglas) Douglas Main Limestone [Obsolete Name And Code: Use HUR] Douglas Muir Quartz-Conglomerate Member Douglas Nine Foot Coal Douglas Parrot Coal Douglas Seven Foot Coal (Douglas) Douglas Six Foot Coal Douglas Smithy Coal Douglas Splint Coal (Douglas) Douglas Stoney Coal Douglas Thirty Inch Coal Douglas Three Foot Coal (Douglas) Douglas Under Limestone [Obsolete Name And Code: Use BBLS] Douglas Water Arenite Formation Douglas Wee Limestone [Obsolete Name And Code: Use BLLS] Douglasbrae Limestone Douk Ghyll Beds [Obsolete Name and Code: Use NORB] Doularg Formation Doulting Beds Dounalt Limestone Formation Dounans Limestone [Obsolete Name and Code: Use DSLM] Dounans Limestone Formation Dounreay Shore Formation Dounreay Siltstone Member Doup Crag Tuff Member Doupster Oil Shale Dove Crag Member [Obsolete Name and Code: Use DOCR] Dove Crag Tuff Member Dove Hole Formation Dove Holes Tuff Dove Rock Vent Dovedale Limestone [Obsolete Name And Code] Dovestone Redbeds Formation Dovey Valley Formation Dowbridge Mudstone Formation Doweel Breccia Formation Dowhills Beds [Obsolete Name and Code: Use DHLS] Dowhills Mudstone Formation Dowlais Limestone [Obsolete Name and Code: Use GACA] Dowlais Limestone Formation Down Cliff Clay [Obsolete Name and Code: Use DCC] Down Cliff Clay Member Down Cliff Sand Member Down Cliff Sand Member And Thorncombe Sand Member (Undifferentiated) Down Cliff Sands [Obsolete Name and Code: Use DCSA] Down Cliffs Clay [Obsolete Name and Code: Use DCC] Down Hill Marine Band [Local Name: Use CAMB] Downan Point Lava Formation Downend Formation [Obsolete Name and Code: Use DN, WINT] Downend Formation and Mangotsfield Formation (Undifferentiated) [Obsolete Name and Code: Use DNMG] Downend Group [Obsolete Name and Code: Use DN] Downend Member Downend Member And Mangotsfield Member (Undifferentiated) Downholland Silt Downie Point Conglomerate [Obsolete Name and Code: Use DPCO] Downie Point Conglomerate Formation [Obsolete Name and Code: Use DPCO, DRCC] Downie Point Conglomerate Member Downie's Loup Sandstone Formation [Obsolete Name: Use CYD] Downies Loup Sandstones (Stirling) [Obsolete Name and Code: Use CYD] Downton Castle Sandstone Formation Downton Castle Sandstone Formation And Temeside Mudstone Formation (Undifferentiated) Downton Castle Sandstone Group [Obsolete Name and Code: Use DCS] Downton Farm Gravel Member Downton Marls [Obsolete Name And Code] Downton Series [Obsolete Name and Code: Use DOW] Downton Subgroup Downtonian Red Marl [Obsolete Name and Code: Use LG] Downtonian sandstone including quartzite-conglomerate [Obsolete Name and Code: Use MAWO] Downwash Gravel Dowra Sandstone Member Dowsing Dolomite Formation [Obsolete Name and Code: Use DWDL] Dowsing Formation Dowsing Formation and Dudgeon Formation Doxall Coal (Bristol Area) Doyle Gneiss Drake Formation Drake Sub-Unit [Obsolete Name and Code: Use DRKE] Drap Coal (South Wales) Draughton Limestone Draughton Shales Dredged or Drainage Channel Drefach Group Drews Coal Drews Coal (South Wales) Drift (Undifferentiated) [Obsolete Name And Code: See SUPD] Drift deposits [Obsolete Name and Code: Use GBG] Drift Geology Not Mapped [For Digital Map Use Only] [Obsolete Name And Code: Use SUPNM] Drigg Beach Till Member Drigg Holm Sand Member Drigg Moorside Silt Member Drigg Point Sand Formation Drigg Till Formation Drimmie Lava Member Droitwich Halite Formation [Obsolete Name and Code: Use DHT] Droitwich Halite Member Dromore Sandstone Member Dronach Shale Member [Obsolete Name and Code: Use LDYW] Dropping Craig Bed Dropping Craig Formation [Obsolete Name and Code: Use DRP] Drosgol Beds [Obsolete Name and Code: Use DRF] Drosgol Formation Drosgol Grits [Obsolete Name and Code: Use DRF] Drosgol Group [Obsolete Name and Code: Use DRF] Dross Coal Drowsell Coal (North Wales) Druid Conglomerate [Obsolete Name and Code: Use DRC] Druid Conglomerate Member Druid Conglomerates [Obsolete Name and Code: Use DRC] Druim An Fhurain Sandstone Member Druim Chuibhe Psammite Formation Druim Fada Quartzite Formation Druim Na Saille Pelite Formation Drum Fireclay Drumadoon Intrusion (South Arran) Drumard Member Drumarg Conglomerate Formation Drumbeg Formation [Obsolete Name and Code: Use DRBG] Drumbeg Sand and Gravel Formation Drumbrick Sandstone Member Drumchastle Pale Limestone Formation Drumchorick Siltstone Formation Drumchorick Siltstone Formation, Benbulben Shale Formation And Tubbrid Sandstone Formation (Undifferentiated) Drumcullen Formation Drumderfit Conglomerate Member Drumflugh Limestone Member Drumgesh Shale Formation Drumgivery Limestone Member Drumgrange Limestone Drumhirk Formation Drumkeeran Siltstone Formation [Obsolete Name and Code: Use DKSF] Drumlish Conglomerate Formation Drumlish Formation [Obsolete Name and Code: Use DISH] Drumlithie Sand and Gravel Formation Drumman More Sandstone Formation Drummangarvagh Member Drummock Beds [Obsolete Name and Code: Use DKG] Drummock Group [Obsolete Name and Code: Use DKG] Drummore Gravel Formation Drummore Gravel Member [Obsolete Name and Code: Use DRGR] Drummournie Biogenic Member Drummuck Subgroup Drummuir Calcareous Member Drumnessie Lava Member Drumnessie Lavas [Obsolete Name and Code: Use DNLA] Drumochter Succession Drumocter Succession [Obsolete Name and Code: Use GCKP] Drumowen Sandstone Member Drumpark Marine Band Drumskinny Sandstone Member Drumwhirn Member Drumyork Flags [Obsolete Name And Code: Use DYF] Drumyork Flags Formation Dry Doddington Nodule Bed Dry valley deposits Drybrook Limestone [Obsolete Name and Code: Use DS, HBO] Drybrook Limestone Formation Drybrook Limestone Formation [Obsolete Name And Code: Use HBO] Drybrook Sandstone Group [Obsolete Name And Code: Use CHSA] Dryburn Foot Limestone Dryburn Limestone [Obsolete Name and Code: Use GL] Dryden Flags [Obsolete Name and Code: Use DRY] Dryden Flags Formation Dryden Formation [Obsolete Name and Code: Use DRY] Dryden Limestone Dryden Shales [Obsolete Name And Code: Use DRY] Drygarn Conglomerate [Obsolete Name And Code: Use CBN] Drygarn Conglomerate [Obsolete Name and Code: Use CBN] Drygill Mudstone Formation Drygill Shales [Obsolete Name and Code: Use DRSH] Dubh Loch Member [Obsolete Name and Code: Use ALBE] Duchray Hill Gneiss [Obsolete Name And Code: Use DHGN] Duchray Hill Gneiss Member Dud Sandstone Duddo Limestone Duddon Bridge Tuff Member Duddon Bridge Tuffs [Obsolete Name and Code: Use DH, DBT] Duddon Conglomerate Member Duddon Hall Tuff Formation Duddon Hall Tuffs [Obsolete Name and Code: Use DH] Dudgeon Formation Dudgeon Saliferous Formation [Obsolete Name and Code: Use DGSL] Dudley Basaltic Sill-and-vent-swarm Dudley Limestone [Obsolete Name And Code] Dufftown Limestone Member Dufton Shale Formation Dug Head Sandstone Member [Obsolete Name and Code: Use DHS] Duke Coal (Rothbury Area) [Obsolete Name And Code: Use BRMN] Duke Coal (South Wales) Dukinfield Marine Band [Duplicate Lexicon Entry: Use DUKMB] Dukinfield Marine Band [Local Name: Use AGMB] Dulais Coal (South Wales) Dulas Bay Subgroup Dulas Coal (South Wales) Dulas Coal And Nine Feet Coal Dulas Limestone [Obsolete Name and Code: Use LEEL] Dulas Limestone Formation [Obsolete Name And Code: Use LEEL] Dulcey Dock Member Dull Coal (West Yorkshire) Dullan Member [Obsolete Name and Code: Use GOLS] Duloch Sandstone Duloch Under Limestone Dumbarton Rock Plug Dumblar Rigg Sandstone Dumbreck Cloven Coal (Central Coalfield) Dumbreck Sandstone Dumdruff Hill Lava Member Dumdruff Hill Lavas [Obsolete Name and Code: Use DHLA] Dumfries Sandstone Dump Marine Band Dun Caan Shale Member Dun Coal (Scremerston) Dun Gallain Grit Formation Dun Limestone [Obsolete Code: Use DNL] Dun Limestone Member Dun Member Dun Scalpsie Banded Amphibolite Dunaghy Formation Dunain Hill Conglomerate Formation Dunalastair Quartzite Formation Dunalastair Semipelite Formation Dunans Clay Member Dunans Shale Member Dunaskin Clayband Ironstone Dunaskin Fireclay Dunaskin Limestone Dunaskin Rock Dunbar Sandstone Formation Dunbarella Bed Dunbeath Till [Obsolete Name and Code: Use DUTI] Dunbeath Till Formation Dunblane Formation [Obsolete Name and Code: Use DUF, TEF] Dunblane Member [Obsolete Name and Code: Use DUF] Dunblane Sandstone Member Dunchideock Volcanics [Obsolete Name And Code] Dunconnel Hill Plug Dundarg Castle Conglomerate [Obsolete Name and Code: Use DCST] Dundarg Conglomeratic Sandstone Formation [Obsolete Name And Code: See DDG] Dundarg Sandstone Formation Dundary Castle Sandstone Formation [Obsolete Name and Code: Use DCST] Dundee Flagstone Formation Dundee Formation [Obsolete Name and Code: Use DEF] Dundonald Sill Dundry Freestone Dune sandstone [Obsolete Name and Code: Use BRI] Duneaton Volcanic Formation Dunfallandy Hill Pluton Dunfermline Splint Coal (Fife) Dunfermline Under Coal (Fife) Dungavel Group Dungavel Hill Conglomerate Member Dungeon Ghyll Member [Obsolete Name and Code: Use DGY] Dungeon Ghyll Sandstone Member Dungiven Formation Dungiven Formation (A) [Obsolete Code: Use DUNN] Dungiven Formation (B) [Obsolete Code: Use DUNN] Dungiven Formation [Obsolete Name and Code: Use DUNN] Dungiven Limestone [Obsolete Name and Code: Use DBDU, DUNN] Dunglass Coal Dungoil Linear Vent-System Dungy Drift [Obsolete Name and Code: Use DYDC] Dungy Drift Coal (Somerset) Dungy Head and Dancing Ledge members (Isle of Purbeck) [Obsolete Name and Code: Use POCH] Dunion Hill Plug Dunkeld Grit Dunkpool Limestone Dunlin Group Dunlin Shale Member [Obsolete Name and Code: Use DRKE] Dunlin Shale Unit [Obsolete Name and Code: Use DUNL] Dunlin Silt Unit [Obsolete Name and Code: Use DUNL] Dunlin Siltstone Member [Obsolete Name and Code: Use AMND, BURT, COOK] Dunnage Copse Gravel Member Dunnerdale Formation [Obsolete Name and Code: Use DNF] Dunnerdale Sandstone Formation Dunnerdale Tuffs [Obsolete Name and Code: Use DNF] Dunnet Head Sandstone Formation Dunnet Head Sandstone Group [Obsolete Name and Code: Use DUH, OYS] Dunnet Marls Dunnet Sandstone Dunnet Sandstone Group [Obsolete Name and Code: Use DUH] Dunnet Shale Dunnet Shell Bed Dunnottar and Crawton Groups [Undifferentiated] [Obsolete Name and Code: Use DRCR] Dunnottar Castle Conglomerate Formation Dunnottar Castle Formation [Obsolete Name and Code: Use CHAV] Dunnottar Conglomerate [Obsolete Name and Code: Use DRG] Dunnottar Group [Obsolete Name And Code: See Dunnottar-Crawton Group] Dunnottar-Crawton Group Dunoon Phyllite [Obsolete Name and Code: Use DCDP] Dunoon Phyllite Formation Dunphail Semipelite Formation Dunrobin Bay Formation [See Also DUNR] Dunrobin Bay Group [See Also DRB] Dunrobin Beds [Obsolete Name and Code: Use DRB] Dunrobin Castle Member Dunrobin Pier Conglomerate Member Dunrossness Phyllite [Obsolete Name and Code: Use DBDP] Dunrossness Phyllitic Formation Dunrossness Phyllitic Formation [Obsolete Code: Use DUPH] Dunrossness Phyllitic Group [Obsolete Name and Code: Use DBDP] Dunrossness Spilitic Formation Dunrossness Spilitic Group [Obsolete Name and Code: Use DUSP] Dunscombe Mudstone Formation [Obsolete Name and Code: Use AS, BCMU] Dunside Formation Dunsil And First Waterloo Coal (Vale Of Belvoir) Dunsil Coal (West And South Yorkshire, Nottingham And Derby) Dunsmore Gravel Duntulm Formation Dunwich Group Dura Den Fish Bed [Obsolete Name And Code: Use DDF] Dura Den Formation [Obsolete Name and Code: Use DDF] Dura Den Member Durbog Coal (North Wales) Dure Clough Sandstone Dure Clough Sandstones Member [Obsolete Name and Code: Use DUCS] Durham Complex [Obsolete Name and Code: Use TYWE] Durham Fissure Fillings [Obsolete Name and Code: Use CEDN] Durham Low Main Coal (Northumberland And Durham) Durham Low Main Post Sandstone Durham Lower Till (boulder clay) [Obsolete Name and Code: Use WETI] Durham Lower Till [Obsolete Name and Code: Use BHTI] Durham Member Durham Upper Till [Obsolete Name and Code: Use HNTI] Duricrust Durine Formation Durine Group [Obsolete Name and Code: Use DUR] Durisdeer Formation Durley Sand Member Durlston Beds [Obsolete Name And Code: Use DURN] Durlston Formation Durn Hill Quartzite [Obsolete Name and Code: Use ARPS] Durn Hill Quartzite Formation Durness Group Durness Limestone or Eriboll Limestone [Obsolete Name and Code: Use DNG] Durness or Eriboll Series [Obsolete Name and Code: Use DNG] Durnhill Quartzite [Obsolete Name and Code: Use KYQU] Dutch Classification System [Root term only] Dwfor Mudstone Formation Dwyfach Formation Dyehouse Coal (South Lanacashire) Dyffryn Flags [Obsolete Name and Code: Use DFN] Dyffryn Flags Facies (Caban Conglomerate Formation) Dyffryn Flags Facies [Obsolete Name and Code: Use DFN] Dyffryn Flags Facies Formation [Obsolete Name and Code: Use DFN] Dyffryn Mymbyr Tuff Member Dykebar Coal Dykebar Limestone Dykebar Marine Band Dykebar Marls Dykeneuk Limestone [Obsolete Name and Code: Use CAL] Dyneley Knoll Flags Dyrham Formation Dyrham Formation And Beacon Limestone Formation (Undifferentiated) Dyrham Formation And Marlstone Rock Formation (Undifferentiated) Dyrham Rock [Obsolete Name And Code] Dyrham Silt(s) [Obsolete Name and Code: Use DYS] Dyrham Siltstone Formation [Obsolete Name and Code: Use DYS] Dysart Main Coal (Fife) Dysart Musselband Dyserth Limestone Group (Knoll-Reef) Dyserth Limestone Group [Obsolete Name and Code: Use CLWYD] Dyserth Limestone Group [Obsolete Name and Code: Use CRAV] Dyserth Quarry Limestone [Obsolete Name and Code: Use LNML] Eagle Crag Member [Obsolete Name and Code: Use EAGC] Eagle Crag Sandstone Member Eagle Crag Tuffs and Honister Slates [Obsolete Name and Code: Use EAGC] Eagle Moor Member [Obsolete Name and Code: Use EMSG] Eagle Moor Sand and Gravel [Obsolete Name and Code: Use EMSG] Eagle Moor Sand and Gravel Member Eagle Sandstone Eaglesham Lava Member Eaglesham Lavas [Obsolete Name and Code: Use CBLA, EMLA] Earl David's Parrot Coal (Fife) Earlswood Till Early Cambrian Rocks (Undifferentiated) Early Permian Dyke (Within MCPAD) Early Permian Intrusion (Within MCPAI) Earn Gravel [Obsolete Name and Code: Use TEGR] Earnley "Division" Earnley 'Division' [Obsolete Name and Code: Use MARF, EA] Earnley Formation [Obsolete Name and Code: Use EA] Earnley Sand Formation Earnley Sand Formation And Marsh Farm Formation (Undifferentiated) Earnock Blackband Ironstone Earnock Clayband Ironstone Earth flow deposits Earthwork Sandstone Earthy Coal (Lancashire) Earthy Delf Eas Mor Granite (Western Red Hills Centre: Phase 9) Easdale Slate [Obsolete Name and Code: Use DBES] Easdale Slate Formation Easdale Subgroup Easebourne Member Easington Formation [Obsolete Name and Code: Use EASN] Easington Raised Beach Formation East Barra Meta-Igneous Complex East Brow Member East Burra Group East Carlton Grit East Durham Till Formation [Obsolete Name] East Fife Basanitic And Foiditic Plugs And Vents East Glen Tilt Pluton [Obsolete Name And Code: See CLACH] East Grampian (Albion) Glacigenic Subgroup East Grampian Drift Group [Obsolete Name and Code: Use EGD] East Grampian Glacigenic Group [Obsolete Name and Code: Use EGD] East Grampian Glacigenic Subgroup East Grange Till Member East Greenland Province East Harbour Formation [Obsolete Name and Code: Use CHST] East Kilbride Common Coal East Kirkton Limestone East Leys Member [Obsolete Name and Code: Use CORSE] East Leys Till [Obsolete Name and Code: Use CORSE] East Linton Lava Member East Linton Member [Obsolete Name and Code: Use ELLA] East Lothian Basanite And Foiditic Plugs And Vents East Lothian Subsuite (Of MCLFS) East Ogwell Limestone [Obsolete Name and Code: Use EOL] East Ogwell Limestone Formation East Stayvoyage Vein East Thelma Member [Obsolete Name and Code: Use BRAE] East Wear Bay and Abbots Cliff Formations [Obsolete Name and Code: Use ZZCH] Easter Glen Quioch Psammite Easter Main Coal Eastern Glenelg Gneiss Eastern Gneiss And Sand Voe Group [Intimate Mixture] Eastern Gneisses Eastern Gneisses and Hillswick Group (Undifferentiated) Eastern Granite (Northmaven Pluton) Eastern Intrusion (Rum Layered Suite) Eastern Layered Intrusion (Rum Layered Suite) [Obsolete Code: Use RLE] Eastern Layered Intrusion, Unit 1 (Rum Layered Suite) Eastern Layered Intrusion, Unit 10 (Rum Layered Suite) Eastern Layered Intrusion, Unit 11 (Rum Layered Suite) Eastern Layered Intrusion, Unit 13 (Rum Layered Suite) Eastern Layered Intrusion, Unit 14 (Rum Layered Suite) Eastern Layered Intrusion, Unit 15 (Rum Layered Suite) Eastern Layered Intrusion, Unit 2 (Rum Layered Suite) Eastern Layered Intrusion, Unit 3 (Rum Layered Suite) Eastern Layered Intrusion, Unit 5 (Rum Layered Suite) Eastern Layered Intrusion, Unit 7 (Rum Layered Suite) Eastern Layered Intrusion, Unit 8 (Rum Layered Suite) Eastern Layered Intrusion, Unit 9 (Rum Layered Suite) Eastern Red Hills Centre (Skye Central Complex) Eastern Uriconian [Obsolete Name And Code: Part Of UO] Eastern Yar River Formation Eastertown Siltstone Member Eastgate Formation [Obsolete Name and Code: Use CARM, EGT, WGAT] Eastgate Formation And Newside Arenite Member [Obsolete Name And Code: Use NWAE] Eastgate Sandstone Member Easton Anhydrite Member Easton Bavents Clay Member Easton Four Feet Coal (Bristol Area) Easton Seven Feet Coal (Bristol Area) Eastside Marine Band Eathie Beds Eathie Fish Bed Ebchester Formation Ebchester Sand And Gravel Formation Eccliffe Member Eccup Marine Band Ecton Limestone Formation Ecton Limestones Formation (Knoll-Reef) Ecton Limestones Formation [Obsolete Name and Code: Use ECL] Ecton Member Edale Shale Group [Obsolete Name And Code: Use BSG] Edale Shales [Obsolete Name and Code: Use BSG, ESH] Eday Beds [Obsolete Name and Code: Use EDY] Eday Flags [Obsolete Name and Code: Use EDF] Eday Flagstone Formation Eday Group Eday Lavas [Obsolete Name And Code: Use DSV] Eday Marl [Obsolete Name and Code: Use EDMA] Eday Marl Formation Eday Sandstones [Obsolete Name and Code: Use EDY] Eday Volcanic Rocks [Obsolete Name and Code: Use DSV] Eday Volcanics [Obsolete Name and Code: Use DSV] Edder Acres Formation [Obsolete Name] Edderton Fish Bed Eddystone Gneiss Eden Member [Duplicate Lexicon Entry: Use *643] Eden Member [Obsolete Name and Code: Use EDTI] Eden Shales Formation Edendork Coal Edenside Till Member Edenvale Beds [Obsolete Name And Code] Edergole Formation Edergole Sandstone [Obsolete Name and Code: Use EGS] Ederny Limestone Member Edge Hill Eleven Foot And Three Foot Coals (New Cumnock Area) Edge Hill Nine Foot Coal (New Cumnock Area) Edge Hill Twelve Foot Coal (New Cumnock Area) Edge Marine Band Edgton Limestone [Obsolete Name and Code: Use EL] Edgton Limestone Member Edinburgh Castle Plug Edlington Formation Edmondia Coal (Nottingham) Edmondia Marine Band Edmondia Punctatella Bed Edwalton Formation [Obsolete Name and Code: Use EDW] Edwalton Member Edzell Mudstone Formation [Obsolete Name And Code: See CXF] Edzell Mudstones [Obsolete Name and Code: Use EDM] Edzell Sandstone Formation [Obsolete Code: Use THF] Edzell Sandstones [Obsolete Name and Code: Use EDS] Eelwell Limestone [Obsolete Name and Code: Use EWL] Eelwell Limestone Member Eem Formation Eemian Mud And Sand, Interbedded (Offshore) Eemian To Weichselian Diamicton, Firm To Hard (Offshore) Eemian To Weichselian Gravel (Offshore) Eemian To Weichselian Mud, Firm To Hard (Offshore) Eemian To Weichselian Sand (Offshore) Eemian To Weichselian Sand And Gravel, Interebedded (Offshore) Eemstelsel [Obsolete Name and Code: Use EE] Egedale Slate Formation [Obsolete Name and Code: Use DAKP] Eggardon Chert Beds Eggardon Grit [Obsolete Name and Code: Use ECG] Eggardon Grit Member Eggesford-Type Culm [Obsolete Name and Code: Use BEAL, CKF] Egginton Common Member [Obsolete Name and Code: Use EGSG] Egginton Common Sand and Gravel [Obsolete Name and Code: Use EGSG] Egginton Common Sand and Gravel Member Eglinton Member Eglinton Shelly Till Member Eglish Sandstone Formation Eglwys Rhobell Formation Eglwyseg Limestone [Obsolete Name and Code: Use LGHL] Eglwyseg Limestone Formation Egmond Ground Formation Ehen Alluvium Formation Ehen Valley Sand And Gravel Member Ehen Valley Silt Member Eidda Formation [Obsolete Name And Code: Use CEI] Eigg Lava Formation Eight Feet Coal (South Staffordshire) Eight Foot Coal Eight Yard Limestone [Obsolete Name and Code: Use FFL] Eight-Yard Limestone Eighteen Inch Coal Eighteen Inch Coal (Cumbria) Eighteen Inch Coal (South Wales) Eil-Arkaig Dyke Swarm Eilde Flags [Obsolete Name and Code: Use GRAM] Eilde Flags Formation Eilde Quartzite [Obsolete Name and Code: Use DAEQ] Eilde Quartzite Member Eilde Schist [Obsolete Name and Code: Use DAES] Eilde Schist Member Eilde, Binnein and Glen Coe Quartzites [Obsolete Name and Code: Use DALO] Eildon Hills Laccolith Eilean A'Bhaird Member Eilean Dubh Formation Eilean Dubh Formation And Ghrudaidh Formation (Undifferentiated) Eilean Dubh Group [Obsolete Name and Code: Use ELD] Eilean Liath Grit Formation Eilean Shona Neck Eilean Siar Glacigenic Group Eileans Sandstone Member Ekofisk Formation Elbow Deposits [Obsolete Name and Code: Use ELW] Elbow Formation Eldersfield Formation [Obsolete Name and Code: Use ELM] Eldersfield Mudstone Formation [Obsolete Name and Code: Use SIM] Eldroth Grit Eldroth Grit Formation [Obsolete Name and Code: Use EDG] Element of Kirkhill Upper Till [Obsolete Name and Code: Use CORSE] Elenid Formation [Obsolete Name and Code: Use ELTI, WALES] Elenid Till Member Elgin Calcrete Formation Elgol Sandstone Formation Elidir Group Elie Eleven Foot Coal Elie Salt Coal Ell Coal Ell Coal (Central Coalfield) Ell Coal (Dailly ) Ell Coal (Warwickshire) Ell Coal and Ryder Coal (Undifferentiated) (Warwickshire) Ell Index Coal (Central Coalfield) Elland Flags Elland Flagstones Leaf 1 Elland Flagstones Leaf 2 Elland Flagstones Leaf 3 Elland Flagstones Leaf 4 Elland Flagstones Leaf 5 Elland Flagstones Leaf 6 Elland Flagstones Leaf 7 Elland Flagstones Leaf 8 Elland Flagstones Leaf 9 Ellel Crag Sandstone Ellen Coal [Obsolete Name and Code: Use UNMH] Ellen Seam Ellenora Coal (Douglas) Ellens Geo Conglomerate Ellenthorpe Gill Limestone Eller Beck Bed [Obsolete Name and Code: Use EBB] Eller Beck Formation Ellerbeck Formation Ellergill Beds Ellerick Formation Ellerker Limestone Ellerker Limestone Member [Obsolete Name and Code: Use ELL] Ellery Syke Limestone Ellon Formation Ellwand Slate Elmsall Coal (West Yorkshire) Elrick Psammite And Semipelite Formation Elsham Sandstone Formation [Obsolete Name and Code: Use ELS] Elsham Sandstone Member Elspeth Formation Elspeth Sequence [Obsolete Name and Code: Use ELSP] Elsterian To Holsteinian Deposits, Undifferentiated (Offshore) Elsterian To Holsteinian Diamicton, Firm To Hard (Offshore) Elsterian To Holsteinian Mud And Sand, Interbedded (Offshore) Elsterian To Holsteinian Mud, Firm To Hard (Offshore) Elsterian To Holsteinian Sand (Offshore) Elswick Mudstone Formation Elsworth Rock [Obsolete Name and Code: Use ELR] Elsworth Rock Formation Elsworth Rock Group [Obsolete Name and Code: Use ELR, WWB] Elsworth Rock Series [Obsolete Name and Code: Use WWB] Elsworth Series [Obsolete Name and Code: Use ELR] Elton Beds [Obsolete Name And Code: Use ELT] Elton Formation Elton Group [Obsolete Name and Code: Use ELTU] Elvans Elveden Formation Elvington Glacial Lake Formation [Obsolete Name and Code: Use ELV] Elvington Glaciolacustrine Formation Elwick Member [Obsolete Name and Code: Use ELWK] Elwick Moraine Member Elwy Formation Elwy Group [Obsolete Name and Code: Use EY] Elygrain Vent Ember Lane Basaltic Pyroclastic-Breccia Vent Embleton Diorite [Obsolete Name and Code: Use EMBL] Embleton Microdiorite Intrusions Embsay Limestone [Obsolete Name and Code: Use EML] Embsay Limestone Member Embury Shale Emerald Formation Emerald Sandstone [Obsolete Name and Code: Use EMLD] Emley Rock Endrick Formation [Obsolete Name and Code: Use ENDR] Endrick Sand Member Enfield Silt Formation [Obsolete Name and Code: Use ESI] Enfield Silt Member Engan Spilitic Formation Engineered Embankment (Undivided) Engineered Excavation (Undivided) Engineering Excavation (Tunnelling) [Obsolete Name and Code: Use DSR] Enler Group Ennerdale Granite [Obsolete Name and Code: Use ESK] Ennerdale Granophyre [Obsolete Name and Code: Use ENIN] Ennerdale Intrusion Ennerdale Intrusion, Diorite [Obsolete Code: Use ENIN + Rock Type] Ennerdale Intrusion, Granite [Obsolete Code: Use ENIN + Rock Type] Ennerdale Intrusion, Granophyre [Obsolete Code: Use ENIN + Rock Type] Ennerdale Intrusion, Microdiorite [Obsolete Code: Use ENIN + Rock Type] Enterkin Mudstone Formation Enville Beds [Obsolete Name and Code: Use EB, EN] Enville Breccia [Obsolete Name And Code] Enville Formation [Obsolete Name And Code: See EN] Enville Member Eocene And Oligocene Rocks (Undifferentiated) Eocene Rocks (Undifferentiated) Eocene To Miocene Rocks (Undifferentiated) Eocene To Pliocene Rocks (Undifferentiated) Epidotic Grit Formation [Obsolete Name and Code: Use TBE] Equates with Meadow House Clay Member [Obsolete Name and Code: Use MWHO] Equates With The Grey Grits Of The Merthyr Tydfil District. Equivalent To Bedminster Great Coal [BEGT] Equivalent To Clee Group Equivalent To Part Of The Lower Limestone Formation Of The Midland Valley Equivalent To Pendle Top Grit. Equivalent To Skipton Moor Grit. Equivalent To The Lower Part Of The Culver Chalk Equivalent To The Upper Part Of The Culver Chalk Erbistock Formation [Obsolete Name And Code: See SAL and HA] Erbistock Group [Obsolete Name and Code: Use ERB] Ercall Granophyre Eriboll Formation Eriboll Group [Obsolete Name and Code: Use ARDV] Eriboll Sandstone Formation [Obsolete Name and Code: Use ERSA] Eriboll Sandstone Group [Obsolete Name and Code: Use ERSA] Eriksson Formation [Obsolete Name and Code: Use STAT] Eriksson Member [Obsolete Name and Code: Use STAT] Erins Quartzite [Obsolete Name and Code: Use DBEQ] Erins Quartzite Formation Eriswell Member Erlend Acid-Intermediate Intrusives Erlend Basalts Erlend Silicic Intrusives Ernan-Glass Metabasic Swarm Errington Member Errol Beds [Obsolete Name and Code: Use ERRCL] Errol Clay Formation Errol Member Erskine Clay Member Erskine Formation [Obsolete Name and Code: Use ERSK] Erwan Fach Formation Eryri Formation [Obsolete Name and Code: Use LNTI, WALES] Eryry Glacigenic Formation Escarpment Member Escrick Moraine [Obsolete Name and Code: Use ESKRM] Escrick Moraine Member Esha Ness Sedimentary Rocks Esha Ness Volcanic Formation Esk Evaporite Formation [Obsolete Name and Code: Use EEV] Esk Evaporite Member Esk Pike Formation [Obsolete Name and Code: Use ESP] Esk Pike Hornstone [Obsolete Name and Code: Use ESP] Esk Pike Sandstone Formation Eskbank Wood Formation Eskdale Granodiorite [Obsolete Name and Code: Use ESK] Eskdale Group [Obsolete Name And Code: See ZG] Eskdale Intrusion [Obsolete Name and Code: Use ESK] Eskdale Intrusion, Granite [Obsolete Code: Use ESK + Rock Type] Eskdale Intrusion, Granodiorite [Obsolete Code: Use ESK + Rock Type] Eskdale Intrusion, Microgranite [Obsolete Code: Use ESK + Rock Type] Eskdale Intrusions Eskdale Moor Injection Breccia Eskdale Pluton [Obsolete Name and Code: Use ESK] Eskdalemuir Dyke Eskdalemuir Formation Esker [Obsolete Name and Code: Use EK] Esker deposits Eskett Limestone Formation Eskmouth Extra Coal Essex White Ballast [Obsolete Name and Code: Use SBRY, KES, CCHR, KGCA] Essie Till Formation Estheria Shales [Obsolete Name and Code: Use LASH] Estheria Shales plus Mytilus Shales [Obsolete Name and Code: Use LASH] Estuarine "Series" [Obsolete Name And Code] Estuarine Alluvium [Obsolete Name and Code: Use TFD] Estuarine alluvium and higher estuarine alluvium [Obsolete Name and Code: Use SLEV] Estuarine Limestones [Obsolete Name and Code: Use WBRO] Estuarine Series [Obsolete Name and Code: Use BOCO] Etive Dyke Swarm Etive Formation Etive Pluton Etive Plutonic Complex [Obsolete Name and Code: Use ETIVE] Etive Rhyolite Member Etive Sub-Unit [Obsolete Name and Code: Use ETVE] Etruria Formation Etruria Formation, Halesowen Formation And Salop Formation (Undifferentiated) Etruria Marl [Obsolete Name and Code: Use ETM] Etruria Marl Formation [Obsolete Name and Code: Use ETM] Etruria Marl Series [Obsolete Name and Code: Use ETM] Ettrick Group Ettrick Sandstone [Obsolete Name and Code: Use BNSA] Ettrickbridge Formation Etwall Member [Obsolete Name and Code: Use ETSG] Etwall Sand and Gravel [Obsolete Name and Code: Use ETSG] Etwall Sand and Gravel Member Eumorphoceras Bisulcatum Marine Band [Obsolete Name and Code: Use E2A2, EFMB] Eumorphoceras Ferrimontanum Marine Band Eumorphoceras Ferrimontanum Marine Band [Obsolete Code: Use E2A2] Eumorphoceras Pseudobilingue Marine Band [Obsolete Name and Code: Use E1B2, TPMB] Eumorphoceras Yatesae Marine Band Eumorphoceras Yatesae Marine Band [Obsolete Code: Use E2A3] Eureka Coal (South Derbyshire) Ewingston Sill Excavata Beds [Obsolete Name and Code: Use SHIP] Exceat Flint Excelsior Coal (Leicestershire) Exe Breccia [Obsolete Name and Code: Use EBR] Exe Breccia Formation Exe Valley Formation Exeter Group Exhall Conglomerate [Obsolete Name And Code: Use EXSA] Exhall Sandstone Exminster Breccias [Obsolete Name And Code: Use HVBR] Exminster Conglomerates [Obsolete Name and Code: Use HVBR] Exmoor Group Exmouth Beds [Obsolete Name and Code: Use AYB] Exmouth Formation [Obsolete Name and Code: Use EMSA] Exmouth Mudstone and Sandstone Formation Exmouth Mudstone and Sandstone Member [Obsolete Name and Code: Use EMSA] Exmouth Sandstone and Mudstone [Obsolete Name and Code: Use EMSA] Exmouth Sandstone And Mudstone Formation [Obsolete Name And Code: Use EMSA] Exmouth Sandstones [Obsolete Name and Code: Use EMSA] Exmouth Sandstones and Mudstones [Obsolete Name and Code: Use EMSA] Exogyra Nana Beds [Obsolete Name and Code: Use OKLY] Exogyra Nana Clay [Obsolete Name and Code: Use OKLY] Exogyra Nana Zone [Obsolete Name and Code: Use OKLY] Expanded Standard Black Band Succession [Obsolete Name and Code: Use PLMA, BKBD] Extensus Flags Eyam Group [Obsolete Name And Code: See EYL] Eyam Limestone Formation Eyam Limestones Formation (Flat-Reef) Eyam Limestones Formation (Knoll-Reef) Eyam Limestones Formation [Obsolete Name and Code: Use EYL] Eycott Group [Obsolete Name and Code: Use EVG] Eycott Lava [Obsolete Name And Code: See EVG] Eycott Volcanic Group Eyebroughty Sill Eyebroughty Vent Eyemouth Vent Eyemouth Volcanic Formation Eyford Member Eyford Sandstone Member [Obsolete Name and Code: Use EYF] Eymore Farm Marine Band [Duplicate Lexicon Entry: Use EFMMB] Eymore Farm Marine Band [Local Name: Use AGMB] Eynort Mudstone Formation Eynsham Gravel and Stanton Harcourt Gravel [Obsolete Name and Code: Use SURA] Eype Clay [Obsolete Name and Code: Use EYCL] Eype Clay Member Eype Mouth Limestone Member F1 F1 And F2 Fachwen Formation Fachwen Formation And Minfford Formation (Undifferentiated) Fahan Grits Fahan Slates Fair Head Sill Fair Isle Group Fair Sandstone Unit Fairbottom Coal (South Lancashire) Fairbottom Mine [Obsolete Name and Code: Use FMCO] Fairbottom Mine Coal Fairlie Sandstone Formation Fairlight Clays Fairmilehead Volcanic Member Fairmilehead, Braids and Blackford [Obsolete Name and Code: Use BRAI, FAI, BLCK] Fairy Cave Mudstone Member Falcarragh Limestone Falfield Beds Falhouse Rock Fallgate Volcanic Formation Fallowhill Coal Falls Falls of Phones Semipelite Formation Falmouth Beds [Obsolete Name And Code: Use PORO] Falmouth Series [Obsolete Name and Code: Use GRO, PORO] False Bedded Grit [Obsolete Name and Code: Use BAQ] False Bedded Limestone [Obsolete Name and Code: Use TOF] False Bedded Quartzite, Lower Quartzite [Obsolete Name and Code: Use BAQ] False Ell Coal (Derby) False-Bedded Quartzite Formation [Obsolete Name and Code: Use BAQ] False-Bedded Quartzite Member [Obsolete Name and Code: Use BAQ] False-Bedded Quartzite Member [Obsolete Name And Code: Use BAQ] Fan Gravel Fanad Pluton Fankerton Limestone Fanogle Sandstone [Obsolete Name and Code: Use MEST] Far House Member Faraday House Shell Bed Marine Band Faraday Road Member Farclas Sand Member [Obsolete Name and Code: Use BETR] Farden Member Farewell Rock [Obsolete Name] Farigaig Formation Faringdon Sand Formation Faringdon Sponge Gravel Member Faringdon Sponge Gravels [Obsolete Name and Code: Use FSG] Farley Member [Obsolete Name and Code: Use TKB] Farlington Marls (One) Farlington Marls (Two) Farlough Coal Farlow Group [Obsolete Name and Code: Use FRL] Farlow Sandstone Formation Farlow Sandstone Group [Obsolete Name and Code: Use FRL] Farlow Series [Obsolete Name and Code: Use FRL] Farm Coal (South Wales) Farne Group Farnham Glaciofluvial Formation Faroe Group Faroe Plateau Basalts Faroe Plateau Lava Group Faroe-Shetland Channel Formation Faroe-Shetland Channel Sequence [Obsolete Name and Code: Use FSC] Faroes Province Farragon Beds [Obsolete Name and Code: Use FAVO] Farragon Beds [Obsolete Name And Code: Use FAVO] Farragon Volcanic Formation Farrington Formation [Obsolete Name and Code: Use FRF] Farrington Formation and Barren Red Formation (Undifferentiated) [Obsolete Name and Code: Use FABR] Farrington Formation, Barren Red Formation, Radstock Formation and Publow Formation [Obsolete Name and Code: Use FBRP] Farrington Group [Obsolete Name and Code: Use FRF] Farrington Member Farrington Member And Barren Red Member (Undifferentiated) Farrington Member, Barren Red Member, Radstock Member And Publow Member (Undifferentiated) Farriter Bridge Sandstone Member [Obsolete Name And Code] Fascally Sandstone Member Fascally Siltstone Member Faskadale Laminated Gabbro Zone Faughlin Lava Member Faughlin Lavas [Obsolete Name and Code: Use FGHL] Fauldhead Musselband Fault Zone Rocks, Unassigned Faunal organic deposits [Obsolete Name and Code: Use ORGD] Fawcett Coal (Northumberland) Fawes Wood Limestone Formation Feal Intrusion Fearn Pluton Fearnaght Formation Feldspathic gneiss of Strathy [Obsolete Name and Code: Use MSC] Felin-Wen Formation Felin-Wen Formation And Hendre Shales Formation (Undifferentiated) Fell Green Formation [Obsolete Name: Part Of BFA] Fell Sandstone Formation Fell Sandstone Group Fell Sandstone Group [Obsolete Name And Code: Use FELL] Fells Limestone Fells Shale Felmersham Member Felsenmeer Felsitic agglomerate [Obsolete Name and Code: Use CMBA, BENS] Felton St Mary's Limestone Fen and Terrace Gravel [Obsolete Name and Code: Use FEG] Fen Clay (Godwin, 1940); Butery Clay (Skertchly, 1877) [Obsolete Name and Code: Use BYD] Fen Clay [Obsolete Name and Code: Use OXC] Fen Clay Formation (part) [Obsolete Name and Code: Use OXC] Fen Farm Limestone [Obsolete Name and Code: Use FFML] Fen Farm Limestones Bed Fen Gravel Fen Lower Peat Fen peat Fen Sand and Gravel Fen Silt Fen-Margin Gravel [Obsolete Name and Code: Use FEG] Fence Conglomerate [Obsolete Name and Code: Use WGAT, CARM, FEN] Fence Conglomerate Member Fence Member Fenland Formation Fenton Coal (West And South Yorkshire) Fenton Limestone [Obsolete Name and Code: Use FNTL] Fenton Limestone Bed Fenwick Limestone (Northumberland) Feorlin Sandstone Formation Ferder Formation Fereneze Lava Member Ferguslie Fireclay Fernagh Andesite And Dacite Formation [Obsolete Name And Code: Use FRNA] Fernagh Andesite and Dacite Formation [Obsolete Name and Code: Use FRNA] Fernagh Formation Fernham Sand Member Fernieslack Palaeosol Bed Fernrag Coal (Somerset) Ferriby Chalk Formation Ferriby Formation [Obsolete Name and Code: Use FYCK] Ferricrete Ferruginous Band [Obsolete Name and Code: Use CI] Ferruginous Limestone Ferruginous Limestone Series [Obsolete Name and Code: Use SMD] Ferruginous Oolite (Belemnite Bed) [Obsolete Name and Code: Use LECK] Ferruginous Sand [Obsolete Name and Code: Use FRS] Ferruginous Sands [Obsolete Name and Code: Use FRS] Ferruginous Sands and Sandstones [Obsolete Name and Code: Use FHMS] Ferruginous Sands Formation Feshiebridge Psammite Formation Fethaland 'Series' [Obsolete Name And Code: See SDVO] Fethaland 'Series' [Obsolete Name and Code: Use SDVO] Fethaland Metagabbro Ffairfach Grit [Obsolete Name and Code: Use FFG] Ffairfach Grit Formation Ffairfach Grit Member [Obsolete Name and Code: Use FFG] Ffairfach Group [Obsolete Name And Code: Use FFG] Ffernant Formation Ffestiniog Flags Formation Ffestiniog Formation [Obsolete Name And Code: Use FF] Ffestiniog Group [Obsolete Name and Code: Use FF] Ffinnant Sandstone Formation Ffridd Graig-Wen Formation Fiachanis Gritty Sandstone Member Fibua Formation Fiddich Sand Member [Obsolete Name and Code: Use BETR] Fiddler Shell Bed Fiddlers Vein Coal (Pembrokeshire) Fidra Sill Field Coal (South Wales) Fiery Coal (In South Wales Middle Coal Measures Formation) Fiery Coal (In Swansea Member, South Wales) Fiery Coal (South Lancashire) Fiery Delf (Lancashire) Fife Ness Beds [Obsolete Name and Code: Use FNB] Fife Ness Formation Fifth (Bushley Green Lower Part) Terrace of the Severn [Obsolete Name and Code: Use HEATH] Fifth Level Lacustrine Alluvium (Fermanagh) Fifth Limestone (Cumbria) Fifth Limestone To Seventh Limestone (Undifferentiated) (Cumbria) Fifth Limestone To Sixth Limestone (Undifferentiated) (Cumbria) Fifth or Pershore Terrace [Deposits] [Obsolete Name and Code: Use PERT] Fifth Shale Member Fifth Terrace (River Severn) [Obsolete Name and Code: Use BGT] Fifth Terrace [Deposits] [Obsolete Name and Code: Use PERT] Filltirgerig Beds Fimbriata-Waltoni Bed (sensu lato) and Upper Epithyris Bed [Obsolete Name and Code: Use BLAD] Fin Glen Lava Member Fin Glen Lavas [Obsolete Name and Code: Use FGLA] Finavon Conglomerate Formation [Obsolete Name and Code: Use FCO] Finavon Conglomerate Member Findern Clay Findhorn Complex [Obsolete Name and Code: Use FDHN] Findhorn Formation Findhorn Pluton Findhorn Pluton, Phase 1 Findhorn Pluton, Phase 2 Findhorn Pluton, Phase 3 Findhorn Sandstone Group [Obsolete Name and Code: Use FSA] Findhorn Siltstone unit Findlater Castle Quartzite [Obsolete Name and Code: Use FICQ] Findlater Castle Quartzite Member Findlater Flag Formation Findlater Flags [Obsolete Name And Code: Use FIFL] Findochty Quartzite Member Findochty Sub-Group [Obsolete Name and Code: Use FINQ] Findon Fish Bed Findon Group Fine Freestones [Obsolete Name and Code: Use BHO] Finery Coal (South Wales) Finery Coal [South Wales Coalfield] Finglack Till Formation Finnarts Conglomerate Member Finnie's Main Coal Finsbury Gravel [Obsolete Name and Code: Use FIGR] Finsbury Gravel Member Finstall Member Fintona Beds [Obsolete Name and Code: Use SHAN, FIN] Fintona Group Fintown Pelite Fintry Hills Group [Obsolete Name and Code: Use FHLA] Fintry Hills Lava Member Fiona Formation Fiona Sequence [Obsolete Name and Code: Use FONA] Fionn Choire Formation Fionn Formation Fionn Sequence [Obsolete Name and Code: Use FION] Fionn Subsequence [Obsolete Name and Code: Use FION] Fire Beacon Chert Formation [Obsolete Name And Code: Use COH] Fireach Beag Kyanite Gneiss Member Firebeacon Chert [Obsolete Name and Code: Use TCH] Fireclay Balls Ironstone Fireclay Balls Ironstone (South Staffordshire) Fireclay Coal Fireclay Coal (Birmingham) Fireclay Coal (Cumbria) Fireclay Coal (Somerset) Fireclay Coal (South Staffordshire) Fireclay Group Of Coals (North Wales) Firedamp Coal (North Wales) Firestone Coal (Somerset) Firestone Sandstone Firestone Sill Firestone, Upper Green-Sand or Malmstone [Obsolete Name and Code: Use UGS] First Abden Limestone First Brimham Grit [Obsolete Name and Code: Use LOBM] First Brown Metal Coal First Brown Metal Coal (West Yorkshire) First Cromer Till [Obsolete Name and Code: Use HPTI] First Ell Coal First Ell Coal (Nottingham And Derby) First Kingshaw Limestone First Limestone (Cumbria) First Limestone [Obsolete Name and Code: Use GL] First Limestone To Second Limestone (Undifferentiated) (Cumbria) First Mine Coal First Northmoor Terrace Deposits [Obsolete Name and Code: Use NO] First or 10 Foot Terrace [Obsolete Name and Code: Use NO] First or Birlington (Birlingham) Terrace [Obsolete Name and Code: Use BRET] First Piper Coal (South Yorkshire, Nottingham And Derby) First Shale Member First Smalley Coal First Smalley Coal (Leicester And Derby) First Smalley Marine Band First Smalley Marine Band [Local Name: Use HNMB] First St John's Coal (South Yorkshire And Derby) First Terrace [Deposits] [Obsolete Name and Code: Use BRET] First Terrace [Obsolete Name and Code: Use ME1] First Terrace Deposits [Obsolete Name and Code: Use NO, BRET] First Terrace Deposits or Floodplain Gravels Plus Sunk Channel [Obsolete Name and Code: Use NO] First Terrace of the Ouse [Obsolete Name and Code: Use FELM] First terrace of warp [Obsolete Name and Code] First Wales Coal First Waterloo Coal (South Yorkshire, Nottingham And Derby) Firth Coal Formation Fish Bed Formation Fishbourne Member Fishburn Estheria Band Fisher Beds [Obsolete Name and Code: Use FIS] Fisher Formation Fishgarth Wood Till Member Fishguard Volcanic Complex [Obsolete Name and Code: Use FIV] Fishguard Volcanic Group Fishguard Volcanic Series [Obsolete Name and Code: Use FIV] Fishpool Farm Grits Fiskavaig Formation Fisson's Quarry Conglomerate Fittleworth Beds [Obsolete Name and Code: Use FIB] Fittleworth Member Fitzroy Member Five Clouds Grit [Obsolete Name and Code: Use FCS] Five Clouds Sandstones Five Feet Coal (Leicestershire) Five Feet Coal (South Wales) Five Foot Coal Five Foot Coal (Milford, South Wales) Five Quarters Coal ( Lancashire) Five Quarters Coal (South Wales) Five Roads Marine Band Five Roads Marine Band [Local Name: Use EMMB] Five Yard Coal (North Wales) Five Yard Limestone [Obsolete Name and Code: Use FYL] Five Yard Limestone Member Five-Feet Coal (North Staffordshire) Five-Feet-Gellideg Coal (South Wales) Five-Foot Coal (Tranent) Five-Quarter Coal (Northumberland And Durham) Fivestanks Oil-Shale Fjerritslev Formation Fladdabister Limestone (?Formation) Fladen Deposits [Obsolete Name and Code: Use WGDF] Fladen Group Fladen Member Flaggy Delf Coal (South Lancashire) Flags Formation Flagstaff Limestone Formation Flamborough Chalk Formation Flamborough Formation [Obsolete Name and Code: Use FCK, ROWE] Flanders Moss Peat Formation Flandrian deposits [Obsolete Name and Code: Use QHU] Flat Holm Limestone Member Flathill Flint Flatt Coal Flatts Coal (North Staffordshire) Flaxby-Tollerton Moraine Member Fleckies Meadow Conglomerate [Obsolete Name and Code: Use DCST] Fleet Member [Obsolete Name and Code: Use UCB] Fleet Pluton (Phase 1) Fleet Pluton (Phase 2) Fleetwood Dyke Group Fleming Hall Formation [Obsolete Name and Code: Use FLH] Fleming Hall Tuff Formation Fleswick Anhydrite Fleswick Dolomite Fletcher Bank Grit Fletcher Bank Grit and Midgley Grit (Undifferentiated) Flett Formation Flex Coal (Lothian) Flexible Limestone Flichity Semipelite Formation Flint Coal Rock Flinty Gravel Flinty Rhyolites Flitchity Psammite Formation Flixton Member [Obsolete Name and Code: Use BKBD, PLMA] Flockton Coal (Undifferentiated) (West Yorkshire) Flockton Thick Coal (West And South Yorkshire) Flockton Thin Coal Flockton Thin Coal (West And South Yorkshire) Flodigarry Shale Member Flood Control Basin Flood Defence Embankment Flood Plain Gravel Floodplain gravels [Obsolete Name and Code: Use ECTN] Floodplain sand and gravel [Obsolete Name and Code: Use HPSG] Floodplain terrace [Obsolete Name and Code: Use SCSG, HPSG] Floodplain terrace deposits [Obsolete Name and Code: Use NO] Floodplain Terrace Deposits and Submerged Channel [Obsolete Name and Code: Use NO] Floodplain terrace deposits plus buried channel [Obsolete Name and Code: Use NO] Floor Coal (Nottingham And Derby) Flora Formation Flora Sequence [Obsolete Name and Code: Use FLOR] Floral organic deposits [Obsolete Name and Code: Use ORGD] Flounder Formation Flow Moss Lava Member Flow Moss Lavas [Obsolete Name and Code: Use LFMLA, UFMLA] Flow till Flow Till, Devensian Flows Flugga Sandstone Member Fluid Extraction Fluvial alluvium [Obsolete Name and Code: Use STAY] Fluvial and older river sands and gravels [Obsolete Name and Code: Use ORSG] Fluvial and older river sands and gravels with associated clay [Obsolete Name and Code: Use ORSG] Fluvial deposits Fluvial deposits (Undifferentiated) [Obsolete Name and Code: Use FLUV] Fluvial diatomite Fluvial parts of Swettenham and Lytham formations [Obsolete Name and Code: Use RIBV] Fluvio-aeolian deposits Fluvio-glacial flood gravels [Obsolete Name and Code: Use SHREW] Fluvio-glacial sand and gravel [Obsolete Name and Code: Use GFSG] Fluvio-marine Crag [Obsolete Name and Code: Use NCG] Fluvioglacial Deposits Fluvioglacial Gravel Fluvioglacial sand and gravel [Duplicate Lexicon Entry: Use FGSG] Fluvioglacial sand and gravel [Obsolete Name and Code: Use GFSG] Fluvioglacial Sand And Gravel, Loch Lomond Readvance [Now Obsolete] Fluvioglacial Terrace [Obsolete Name And Code: See GFTD] Flying Reed Coal Flying Reed Coal (South Staffordshire) Fochabers Sandstone Formation Fochriw Coal (South Wales) Fodderletter Calcareous Flag Formation Fodderstone Gravel Member Foel Ddu Rhyodacite Formation Foel Fadian Formation Foel Formation Foel Formation, Llanarmon Formation And Loggerheads Limestone Formation (Undifferentiated) Foel Formation, Llanarmon Formation And Loggerheads Limestone Formation (Undifferentiated) (Knoll-Reef) Foel Fras Volcanic Complex Foel Grach Basalt Formation Foel Gron Granophyric Microgranite Foel Tyrch Formation Foel Y Ddinas Mudstones [Obsolete Name and Code: Use FYD] Foel Y Ddinas Mudstones Formation Foel-Y-Ddinas Mudstones [Obsolete Name And Code: Use FYD] Fogger Reef Limestone Foggs Coal (South Lancashire) Foggs Mine [Obsolete Name and Code: Use FOGC] Foggs Mine Coal Folkeston Coal (Milford, South Wales) Folkeston Vein [Obsolete Name and Code: Use FOLC] Folkestone Beds [Obsolete Name and Code: Use FO] Folkestone Formation Folkestone Formation And Sandgate Formation (Undifferentiated) Folkestone Sands [Obsolete Name and Code: Use FO] Follifoot Grit [Obsolete Name and Code: Use LFG, UF] Folly Coal (Milford, South Wales) Folly Sandstone Folly Vein [Obsolete Name and Code: Use FLYC] Fontmell Magna Sand Fontmell Magna Sand Member [Obsolete Name and Code: Use FMS] Fooden Limestone Foot Coal (Coalbrookdale) Foot Coal (Milford, South Wales) Foot Coal (South Lancashire) Foot Of Whiskey Sike Coal Foot Of Whisky Sike Coal (Northumberland) Foot Vein [Obsolete Name and Code: Use FOCO] Foraminifera Marine Band Foraminifera Marine Band [Local Name: Use EMMB] Ford [Magnesian Limestone] Formation [Obsolete Name and Code: Use FML] Ford Formation Ford Formation (Patch-Reef) Ford Formation (Shelf-Edge Reef) Fordell Marine Band Forden Mudstone Formation Forden Mudstones Formation [Obsolete Name and Code: Use FMF] Fordon Evaporite [Obsolete Code: Use FOEV] Fordon Evaporite Formation Fordon Evaporites [Duplicate Lexicon Entry: Use PDE] Fordon Evaporites [Obsolete Code: Use FOEV] Fordyce Limestone Formation Fore Burn Complex Foreland Grits [Obsolete Name And Code] Forest Bed Forest Bed [Duplicate Lexicon Entry: Use FORST] Forest Clay [Obsolete Name and Code: Use OXC] Forest Hollow Beds [Obsolete Name And Code] Forest Lodge Member Forest Marble [Obsolete Name and Code: Use FMB] Forest Marble Formation Forest Marble Formation And Cornbrash Formation (Undifferentiated) Forest Of Deer Pluton Forge Sandstone Fork Vein Coal (South Wales) Formerly included in Claragh Sandstone Group [Obsolete Name and Code: Use BNMS] Fornham Member Forres Sandstone Group Forse Till Member Forse Till Member Of The Lybster Formation Forster's Hill Limestone Fort Augustus Granite Gneiss Fort William Formation Forth Beds [Obsolete Name and Code: Use FH] Forth Catchments Subgroup Forth Clay Formation Forth Formation Forth Valley Formation Forth-Teith Formation [Obsolete Name and Code: Use MVG] Forties Sandstone Member Forty Yard Coal (Somerset Coalfield, Pensford) Forty Yard Coal (South Yorkshire, Nottingham And Derby) Forty Yard Marine Band Forty Yard Marine Band [Local Name: See MFMB] Forty Yard Seam Forty Yard Vein Coal Fossiliferous mudstones and siltstones [Obsolete Name and Code: Use WLN] Foston Limestones [Obsolete Name and Code: Use FSTL] Foston Member Foughill Complex Dolerites Foughill Complex Granophyres Foul Hosie Limestone Foul Port Mudstone Member Foula Formation Foula Sandstone Foulis Silt Formation Foulport Mudstone Member Foundered strata Four Ashes Sand and Gravel [Obsolete Name and Code: Use FASG] Four Ashes Sand And Gravel Formation Four Ashes Sands and Gravels [Obsolete Name and Code: Use FASG] Four Fathom Limestone [Obsolete Name and Code: Use FFL] Four Fathom Limestone Member Four Feet [Vein] Coal Four Feet Coal (Ingleton) Four Feet Coal (Titterstone Clee) Four Feet Coal (Warwickshire) Four Feet Vein [Coal] Four Foot Coal Four Foot Coal (Cheadle) Four Foot Coal (Derbyshire) Four Foot Coal (Wyre Forest) Four Foot Earth Fireclay Four-Feet Coal (South Wales) Fourlaws Coal (Northumberland) Fourlaws Limestone Fourteen Inch Under Coal [Inappropriate Name And Code: Use PFIUC] Fourteen-Inch Coal (Glasgow Area; Central Coalfield) Fourth (Kidderminster) Terrace of the Severn [Obsolete Name and Code: Use RMLY] Fourth Hosie Limestone Fourth Limestone (Cumbria) Fourth Limestone [Obsolete Name and Code: Use ESKT] Fourth Limestone To Seventh Limestone (Undifferentiated) (Cumbria) Fourth Limestone To Sixth Limestone (Cumbria) Fourth or Ailstone Terrace [Deposits] [Obsolete Name and Code: Use CRTD] Fourth or Hanborough Terrace Deposits [Obsolete Name and Code: Use HAN] Fourth Shale Member Fourth Terrace (River Severn) [Obsolete Name and Code: Use KRT] Fourth Terrace [Deposits] [Obsolete Name and Code: Use CRTD] Fourth Terrace [Obsolete Name and Code: Use ME4] Fourth Terrace Deposits [Obsolete Name and Code: Use CRTD, HAN] Fourth Waterloo and First Ell Coal (Vale Of Belvoir) Fourth Waterloo Coal (Nottingham And Derby) Fourth Waterloo Sandstone Fourth Waterloo Sill Fourth, High or 100-Foot Terrace Deposits [Obsolete Name and Code: Use HAN] Fowls Heugh Conglomerate Formation [Obsolete Name And Code: See WCO] Fownhope Formation Fox Cliff Siltstone Member Foxdale Pluton Foxearth Coal Foxfield Coal (Cheadle) Foxholes Coal (South Lancashire) Foxholes Mine [Obsolete Name and Code: Use FOXH] Foxholes Mine Coal Foxholes Rock Foxley Tuff [Obsolete Name and Code: Use FT] Foxley Tuff Formation Foxmould Foxmould and Cowstone Beds [Obsolete Name and Code: Use FXMD] Foxmould Member Foxmould Sands Foyers Formation Foyers Igneous Complex Foyle Marl Frances Craig Sill Frances Extra Coal Frances Wood Coal Fraser Shale Fraser Shell Bed Fraserburgh Formation Freehay Member Freeland Member [Obsolete Name and Code: Use FL] Freeland Sand and Gravel Member Freeland Terrace Deposits [Obsolete Name and Code: Use FL] Freemanstown Picrite Freestone Series [Obsolete Name And Code: Use POFR] Freestone Series [Obsolete Name and Code: Use POFR] Fremington Member Fresgeo Sandstone [Unit Name And Code Obsolete: Use FGSA] Fresgeo Sandstone Member [Obsolete Name and Code: Use FRSB] Fresgoe Sandstone [Obsolete Name and Code: Use FGSA] Fresgoe Sandstone Bed [Obsolete Name and Code: Use FGSA] Fresgoe Sandstone Member Freshfield Sandstone Member Freshney Sandstone Member Freshwater alluvium [Obsolete Name and Code: Use ALV] Freshwater Beds [Obsolete Name and Code: Use STAM] Freshwater East Formation Freshwater Gravel Member Freshwater West Formation Friar Waddon Member [Obsolete Name and Code: Use PEP] Friars Bay Marls (One) Friars Bay Marls (Three) Friars Bay Marls (Two) Friars Point Limestone Formation Friarton Gravel [Obsolete Name and Code: Use TEGR] Frigate Formation [Obsolete Name and Code: Use FLMR] Frigg Sandstone Member Frith Crag Breccia Member Frith Crag Member [Obsolete Name and Code: Use FRCR] Frith Crag Tuffs [Obsolete Name and Code: Use FRCR] Frizington Limestone Formation Frizington Limestone Formation And Eskett Limestone Formation (Undifferentiated) Frizington Limestone Formation And Sixth Limestone (Cumbria) (Undifferentiated) Frocester Hill Oolite and Selsey Hill Oolite [Obsolete Name and Code: Use CRKY, CLCL] Frodingham Ironstone Member Frodsham Sandstone Member Frog Hall Member Frog Hall Sand and Gravel [Obsolete Name and Code: Use FRHA] Frog Lane Coal (South Wales) Froghall Haematite [Obsolete Name and Code: Use FHI] Froghall Ironstone Froghall Stone [Obsolete Name and Code: Use FHI] Froghill Farm Gravel Member Frogmore Gravel Frome Clay and Fuller's Earth (Undifferentiated) [Obsolete Code: Use FEFR] Frome Clay and Fuller's Earth [Undifferentiated] [Obsolete Name and Code: Use FEFR] Frome Clay Formation Frome-Piddle Formation Fron Frys Formation Fron Frys Slates [Obsolete Name and Code: Use FFR] Fron Newydd Member Fron-fawr Formation Frondderw Ash [Obsolete Name And Code: See FRT] Frondderw Tuff Member Froswick Formation [Obsolete Name and Code: Use FSW] Froswick Tuff Formation Froswick Tuffs [Obsolete Name and Code: Use WOU, FSW] Fucoid Beds [Obsolete Name and Code: Use FUB] Fucoid Beds Formation [Obsolete Name and Code: Use FUB] Fucoid Beds Member Fucoid Shales [Obsolete Name and Code: Use FUB] Fulbeck Member [Obsolete Name and Code: Use FULB] Fulbeck Sand and Gravel [Obsolete Name and Code: Use FULB] Fulbeck Sand and Gravel Member Fulledge Thin Coal (Lancashire) Fulledge Thin Mine [Obsolete Name and Code: Use FTCO] Fulledge Thin Mine Coal Fuller's Earth [Obsolete Name and Code: Use FRC, FE] Fuller's Earth Formation Fuller's Earth Formation and Frome Clay Formation (Undifferentiated) Fuller's Earth Formation and Frome Clay Formation [Undifferentiated] Fuller's Earth Rock Member Fulletby Beds [Obsolete Name and Code: Use ROH] Fulletby Beds [Obsolete Name And Code: Use ROH] Fulmar Formation Fungle Granite (Mount Battock Pluton) Fungous Coal (Coalbrookdale) Fungus Coal [Coalbrookdale] Funzie Conglomerate Formation Furnace Coal Furnace Coal (Lancashire) Furnace Coal (Northumberland) Furnace Coal (Yorkshire) Furze Hill Sandstone Formation [Obsolete Name and Code: Use FHMS] Fyal Lava Member Fydlyn Felsitic Beds [Obsolete Name And Code: See NGW] Fydlyn Felsitic Formation [Obsolete Name and Code: Use NFFF] Fydlyn Group [Obsolete Name And Code: See NGW] Fylde Halite Member Fynddog Grits [Obsolete Name and Code: Use DFG] Fynnon Limestones Gaerfawr Formation Gaerfawr Group [Obsolete Code: Use GAFA] Gafallt Shales [Obsolete Name and Code: Use GA] Gafallt Shales Facies (Caban Conglomerate Formation) Gafallt Shales Facies Formation [Obsolete Name and Code: Use GA] Gag Lane Limestone [Obsolete Name And Code] Gaick Plateau Moraine Formation Gaick Psammite Formation Gair Burn Coal Gair Limestone [Obsolete Name and Code: Use CAL] Gairbeinn Pebbly Psammite Member Gairbeinn Psammite Formation [Obsolete Name and Code: Use BMPP, GABR] Gaisby Rock Gala 7 [Obsolete Name and Code: Use TLEE] Gala Group Gala Group And Hawick Group (Undifferentiated) Gala Unit 1 Gala Unit 2 Gala Unit 3 Gala Unit 4 Gala Unit 4 And Gala Unit 5 (Undifferentiated) Gala Unit 5 Gala Unit 6 Gala Unit 7 Gala Unit 8 Galboly Chalk Formation Galboly Chalk Member [Obsolete Name and Code: Use GCK] Galdenoch Formation Galdenoch Group [Obsolete Name and Code: Use GDF] Gale Seam Gallagh Bridge Formation Galley Sands [Obsolete Name and Code: Use CYSA] Galloway Granitic Suite Gamlan Black Shales [Obsolete Name and Code: Use GMSH, GN] Gamlan Flags and Grits [Obsolete Name and Code: Use GMSH] Gamlan Formation Gamlan Shale Group [Obsolete Name And Code: Use GN] Gamlingay Clay [Obsolete Name and Code: Use AMC] Gamma Coal (North Wales) Gamrie Bay Sandstone Formation Gamrie Fish Bed [Obsolete Name And Code] Ganey Coals Bed(s) (Coalbrookdale) Ganister Clay Coal (Northumberland And Durham) Ganister Coal Ganister Coal (Goyt Trough) Ganister Rock Gannochy Conglomerate Formation Gannochy Formation [Obsolete Name and Code: Use EDS, GYF, STHC, THF] Garabal Hill - Glen Fyne Pluton Garantiana Mudstone Member Garantiana Mudstone Member And Cullaidh Shale Formation (Undifferentiated) Garantiana Shale Member [Obsolete Name and Code: Use GASH] Garbad Sill (South Arran) Garbh-Dhail Quartz-Gabbro Ring-Intrusion Garburn Dacite Formation Garburn Formation [Obsolete Name and Code: Use GAD] Garburn Formation [part] [Obsolete Name and Code: Use GAD] Garc Garw Coal (South Wales) Gardden Lodge Marine Band Gardden Lodge Marine Band [Local Name: See CWMB] Gardden-Fawr Ash [Obsolete Name and Code: Use GOT] Garden Course [Vein] [Obsolete Name and Code: Use GNCC] Garden Course Coal (Somerset) Gardenstown Conglomerate Formation Gargunnock Hills Group [Obsolete Name and Code: Use GHLA] Gargunnock Hills Lava Member Gargunnock Sandstone [Obsolete Name And Code: Use KPF for the top part, SCK for the lower part] Garheugh Formation Garheugh Formation [Obsolete Code: Use GAR] Garibaldi Blackband Ironstone (Central Coalfield) Garibaldi Clayband Ironstone Garibaldi Coal (Central Coalfield) Garland Vein Coal (Pembrokeshire) Garlant Coal (South Wales) Garleton Hill Vent Garleton Hills Volcanic Formation Garleton Hills Volcanic Rocks [Obsolete Name and Code: Use GHV] Garn Bach Dacite Garn Boduan Microgranodiorite Intrusion Garn Caws Sandstone [Obsolete Name and Code: Use GACA] Garn Caws Sandstone Formation Garn Dolerite Garn-gofen Formation Garnant Coal (South Wales) Garnedd-Wen Beds [Obsolete Name And Code: Use GNWF] Garnedd-Wen Formation Garnel Burn Pelite Member Garnet Mica Schist "Unit" Garnetiferous Group [Obsolete Name and Code: Use ETRK, TLEE] Garnfor Microgranite Pluton Garnkirk Limestone [Obsolete Name and Code: Use CAL] Garnkirk Lower Fireclay Garnkirk Main Fireclay Garrique Cornstone Formation [Obsolete Name And Code: See KNW] Garrison Sill Garron Chalk [Obsolete Name and Code: Use GRCK] Garron Chalk Formation Garron Chalk Member [Obsolete Name and Code: Use GRCK] Garron Point Actinolitic Schists [Obsolete Name and Code: Use GART] Garron Point Group [Obsolete Name And Code] Garron Point Tremolitic Flag Member Garscube Wee Coal Garsdale Limestone Formation Gartartan Conglomerate Member Garth Grit Member Garth Hill Beds Garth House Formation Garth Tuff [Obsolete Name and Code: Use LVT] Garth Tuff Member Gartocharn Till Formation Garva Bridge Psammite Formation Garvagh Bridge Member Garvald Lava Member Garvald Lavas [Obsolete Name and Code: Use GVLA] Garvald Sill Garve Psammite Formation Garvock Group [Obsolete Name And Code: See Arbuthnott-Garvock Group] Garw Coal (South Wales) Garw Coal [South Wales Coalfield] Garwallt Ash [Obsolete Name and Code: Use GWT] Garwallt Group [Obsolete Name And Code] Garwallt Tuff Member Garwood Group Gask Intrusion Gastrioceras Cancellatum Marine Band [Obsolete Name And Code: See CNMB But Use G1A1] Gastrioceras Cumbriense Marine Band [Obsolete Name and Code: Use G1B1, CBMB] Gastrioceras Listeri Marine Band [Obsolete Name And Code: Use LSMB] Gastrioceras Sigma Marine Band [Obsolete Name and Code: Use R2C2, VSMB] Gastrioceras Subcrenatum Marine Band [Obsolete Name And Code: Use SBMB] Gastropod Beds Gastropod Limestone Gasworks Mudstone And Cartlett Beds (Undifferentiated) Gasworks Mudstones Gasworks Sandstone Formation Gaughin Quartzite Formation Gault [Obsolete Name and Code: Use GLT] Gault Clay [Obsolete Name and Code: Use GLT] Gault Clay Formation [Obsolete Name and Code: Use GLT] Gault Formation Gault Formation And Upper Greensand Formation (Undifferentiated) Gavells Clough Sandstone Gavells Clough Sandstone Member [Obsolete Name and Code: Use GVCS] Gawber Coal (West Yorkshire) Gawthwaite Formation Gawthwaite Sandstone Member [Obsolete Name and Code: Use BKR] Gayle Limestone Gaythorn Limestone Gedden Coal Gees Coal (South Lancashire) Gelli Coals (South Wales) Gelli Dolerite Gelli Tuff Member Gelli-Grin Calcareous Ash Formation Gelli-Grin Calcareous Ash Series [Obsolete Name and Code: Use GEL] Gelli-Grin Calcareous Ashes [Obsolete Name and Code: Use GEL] Gellideg Coal (South Wales) Gellideg Coal [South Wales Coalfield] Gelliswick Bay Formation Gelvin Till [Obsolete Name And Code] General's Rock Sandstone Geordie Coal Geordie's Coal George's Roust Vein Georges Island Till German Bands Ironstone Gerrards Cross Gravel Gerrards Cross Gravel Formation [Obsolete Name and Code: Use GCGR] Gerrards Cross Member Getting Rock Ironstone (South Staffordshire) Ghrudaidh Formation Ghrudaidh Formation [Also Grudaidh Formation] [Obsolete Code: Use GUD] Ghrudaidh Group [Obsolete Name and Code: Use GUD] Gibbet (Conglomerate) Hill Group [Obsolete Name and Code: Use KHS] Gibbet Hill Conglomerate [Obsolete Name and Code: Use GHC] Gibbet Hill Conglomerate Bed Giffnock Jewel Coal Giffnock Jewel Coal (Glasgow) Giffnock Main Coal Giffnock Sandstone Gilfach Coal (South Wales) Gill Coal (Douglas) Gillcambon Till Formation Gillers Inn Coal (Bristol Area) Gillespie Coal (Lothian) Gillfoot Beds [Obsolete Name And Code: Use GISD] Gillfoot Member [Obsolete Name and Code: Use GISD] Gillfoot Sandstone Formation [Obsolete Name and Code: Use GISD] Gillfoot Sandstone Member Gillis Field Microporphyroblast Gneiss Member Gilmerton Ironstone Gilmerton Limestone [Obsolete Name And Code: Use HUR] Gilmerton Limestone [Obsolete Name and Code: Use HUR] Gilnahirk Formation [Obsolete Name and Code: Use GILN] Gilnahirk Group Gilwern Clay Formation [Obsolete Name and Code: Use GWCL] Gilwern Clay Member Gilwern Oolite [Obsolete Name and Code: Use GWO] Gilwern Oolite Formation Gilwern Volcanic Formation Gin Head (Older) Vent Gin Head Vent Gin Mine Marine Band [Duplicate Lexicon Entry: Use GINMB] Gin Mine Marine Band [Local Name: Use AGMB] Gingham Coal (South Lancashire) Gingham Mine [Obsolete Name and Code: Use GMCO] Gingham Mine Coal Ginstane Ironstone Girlsta Limestone [Obsolete Code: Use GIRL] Girlsta Limestone Formation Girvan - Ballantrae Complex [Obsolete Name and Code: Use BX] Girvan Formation [Obsolete Name and Code: Use CLYCA] Girvan Group Girvanella Band [Obsolete Name and Code: Use GVB] Girvanella Nodular Band Gisburn Cotes Beds Gisburn No.1 Limestone Gisburn No.2 Limestone Gisburn No.3 Limestone Gisburn No.4 Limestone Gisburn No.5 Limestone Given's Coal (Rothbury Area) [Obsolete Name And Code: Use TILY] Glac An Dorchadois Member Glac An Dorchadois Member, Brutach Dearg Member And Cnoc Creaghach Member (Undifferentiated) Glacan Mor Basic Magmatic Breccia Intrusion Glacial Brick Clay Glacial Channel Deposits Glacial deposits Glacial Deposits (Irish Sea Ice) Glacial deposits, 1 Glacial Deposits, Devensian (Irish Sea Ice) Glacial Deposits, Heterogeneous Glacial Deposits, Heterogeneous, Devensian (Irish Sea Ice) Glacial Drift (Undifferentiated) [Obsolete Name and Code: Use GDU] Glacial Erratic (Parent Rock Unspecified) Glacial Gravel Glacial lake deposits (including penecontemporaneous fluviatile deposits) [Obsolete Name and Code: Use ALNE] Glacial lake deposits [Obsolete Name and Code: Use GLLD] Glacial meltwater deposits [Obsolete Name and Code: Use GFDU] Glacial Raft (Great Limestone) Glacial sand and gravel [Obsolete Name and Code] Glacial sands and gravels [Obsolete Name and Code: Use BLSG] Glacial Silt Glacial Silts And Clays Glacial till [Obsolete Name and Code: Use TILL] Glacially over-ridden terrain (by readvance ice) [See descriptions for limitations of use] Glacially over-ridden terrain (by readvance ice), mostly fines [see descriptions for limitations of use] Glacially over-ridden terrain (by readvance ice), mostly gravels [see descriptions for limitations of use] Glacially over-ridden terrain (by readvance ice), mostly sand [see descriptions for limitations of use] Glacially over-ridden terrain (by readvance ice), mostly till [see descriptions for limitations of use] Glacigenic deposits Glacio-marine deposits (undifferentiated) [Obsolete Name and Code: Use GMDU] Glaciofluvial deltaic (and/or subaqueous fan) deposits Glaciofluvial deltaic deposits [Duplicate Lexicon Entry: Use GFDD] Glaciofluvial deltaic deposits, Devensian Glaciofluvial deltaic deposits, Devensian (Irish Sea ice) Glaciofluvial deposits Glaciofluvial deposits (Irish Sea ice) Glaciofluvial deposits (undifferentiated) [Obsolete Name and Code: Use GFDU] Glaciofluvial deposits (undifferentiated), 1 [Obsolete Name and Code: Use GFDU1] Glaciofluvial deposits, 1 Glaciofluvial deposits, Anglian Glaciofluvial deposits, Devensian Glaciofluvial deposits, Devensian (Irish Sea ice) Glaciofluvial deposits, Devensian (Welsh ice) Glaciofluvial deposits, Mid Pleistocene Glaciofluvial deposits, undifferentiated (Irish Sea ice) [Obsolete Name and Code: Use GFDUI] Glaciofluvial deposits, undifferentiated (Middle Pleistocene) [Obsolete Name and Code: Use GFDMP] Glaciofluvial deposits, undifferentiated, Anglian [Obsolete Name and Code: Use GFDUA] Glaciofluvial deposits, undifferentiated, Devensian (Welsh ice) [Obsolete Name and Code: Use GFUDW] Glaciofluvial deposits, undifferentiated, Devensian [Obsolete Name and Code: Use GFDUD] Glaciofluvial fan deposits Glaciofluvial fan deposits 1, Devensian Glaciofluvial fan deposits 2, Devensian Glaciofluvial fan deposits, Devensian Glaciofluvial ice contact deposits Glaciofluvial ice contact deposits, Anglian Glaciofluvial ice contact deposits, Devensian Glaciofluvial ice contact deposits, Devensian (Irish Sea ice) Glaciofluvial ice contact deposits, Devensian (Welsh ice) Glaciofluvial ice contact deposits, Mid Pleistocene Glaciofluvial sand and gravel Glaciofluvial sheet and channel deposits Glaciofluvial sheet deposits Glaciofluvial sheet deposits, 1 Glaciofluvial sheet deposits, 2 Glaciofluvial sheet deposits, 3 Glaciofluvial sheet deposits, Anglian Glaciofluvial sheet deposits, Devensian Glaciofluvial sheet deposits, Devensian (Irish Sea ice) Glaciofluvial sheet deposits, Devensian (Welsh ice) Glaciofluvial sheet deposits, Devensian, 1 Glaciofluvial sheet deposits, Devensian, 2 Glaciofluvial sheet deposits, Devensian, 3 Glaciofluvial sheet deposits, Devensian, 4 Glaciofluvial sheet deposits, Mid Pleistocene Glaciofluvial Sub-Glacial Deposits Glaciofluvial sub-glacial deposits (Undifferentiated) [Obsolete Name and Code: Use GFSU] Glaciofluvial terrace deposits Glaciofluvial terrace deposits, 1 Glaciofluvial terrace deposits, 2 Glaciofluvial terrace deposits, 3 Glaciofluvial terrace deposits, 4 Glaciofluvial terrace deposits, Devensian Glaciofluvial terrace deposits, Mid Pleistocene Glaciolacustrine beach deposits Glaciolacustrine deltaic deposits Glaciolacustrine deltaic deposits, Devensian Glaciolacustrine deposits Glaciolacustrine deposits (age unknown) Glaciolacustrine deposits (Anglian) Glaciolacustrine deposits (Irish Sea ice) Glaciolacustrine deposits (Loch Lomond Readvance) Glaciolacustrine deposits [see descriptions for limitations of use] Glaciolacustrine deposits, 1 Glaciolacustrine deposits, Devensian Glaciolacustrine deposits, Devensian (Irish Sea ice) Glaciolacustrine deposits, Mid Pleistocene Glaciolacustrine deposits, mostly fines [see descriptions for limitations of use] Glaciolacustrine deposits, mostly gravels [see descriptions for limitations of use] Glaciolacustrine deposits, mostly sands [see descriptions for limitations of use] Glaciolacustrine deposits, undifferentiated [Obsolete Name and Code: Use GLLD] Glaciolacustrine pro-glacial deposits [Obsolete Name and Code: Use GLPG] Glaciolacustrine proglacial deposits [Obsolete Name and Code: Use GLLD] Glaciolacustrine sand and gravel [Obsolete Name and Code: Use GLLD] Glaciolacustrine silt and clay Glaciolacustrine sub-glacial deposits Glaciolacustrine subaqueous fan deposits Glaciomarine beach deposits Glaciomarine deltaic deposits Glaciomarine deposits Glaciomarine sea-bed deposits Glaciomarine subaqueous fan deposits Glaciomarine subtidal deposits Glaciotectonic thrust terrain, mostly gravels [see descriptions for limitations of use] Glaciotectonic thrust terrain, mostly sands [see descriptions for limitations of use] Glacitectonic thrust terrain [see descriptions for limitations of use] Glacitectonic thrust terrain, mostly fines [see descriptions for limitations of use] Glamaig Granite (Western Red Hills Centre: Phase 1) Glamorgan Drift [Obsolete Name and Code: Use GLGL] Glamorgan Formation [Obsolete Name and Code: Use WALES] Glamorgan Glacigenic Formation Glannoventia Formation Glanrafon Beds [Obsolete Name and Code: Use CAU] Glanrafon Slates [Obsolete Name And Code] Glanypwll Formation [Obsolete Name and Code: Use DYN] Glanyrafon Formation Glanyrafon Formation (Lower Tongue) Glanyrafon Formation (Upper Tongue) Glaramara Tuff Glaramara Tuff Member [Obsolete Name and Code: Use GMT] Glas Bheinn Mhor Granite (Skye Eastern Red Hills Centre: Phase 1) Glas Bheinn Porphyritic Dolerite Intrusion Glas Choire Sandstone Member Glas Coire Alluvial Member [Obsolete Name and Code: Use GCAL] Glas Eilean Basaltic Vent Glas Eilean Lava Formation Glasallt-Fawr Formation Glascarnoch Psammite Formation Glascoed Mudstone Formation Glascoed Mudstone Formation And Ton Siltstone Formation (Undifferentiated) Glasgow Ell Coal (Central Coalfield) Glasgow Ell Index Coal (Central Coalfield) Glasgow Main Coal (Central Coalfield) Glasgow Main Under Coal (Central Coalfield) Glasgow Shale Coal (Central Coalfield) Glasgow Splint Coal (Central Coalfield) Glasgow Upper Coal (Central Coalfield) Glashvin Silt Member Glaslyn Formation Glass Coal (Midlothian) Glass Coal (Musselburgh, Midlothian) Glass Houghton Rock Glassee Coal (Fife) Glasslin Burn Conglomerate Formation [Obsolete Name And Code: See DRCR] Glassmullen Plug Glauconitic and micaceous sands of the zone of Mortoniceras inflatum [Obsolete Name and Code: Use CANS] Glauconitic Beds [Obsolete Name and Code: Use PSND] Glauconitic Marl [Obsolete Name and Code: Use CBG] Glauconitic Marl Member Glauconitic sands [in part] and ferruginous grit [Obsolete Name and Code: Use USPS] Glauconitic Sands [Obsolete Name and Code: Use BLFM, CLLW] Glauconitic Sandstone Member Gleann Baddoch Dolomite [Obsolete Name and Code: Use BADL] Gleann Beag Limestone Member Gleann Beag Phyllites Gleann Beag Ribbed Limestone Gleann Beag Schist [Obsolete Name and Code: Use GLCS, GTSC] Gleann Beag Schist Formation Gleann Charadail Member Gleann Nan Gabhar Slate Member Gleann Oraid Formation Gleaston Dolomite Gleaston Formation [Obsolete Name And Code: Use AG] Gleaston Formation And Bowland Shale Formation (Undifferentiated) Gleaston Group [Obsolete Name and Code: Use GTGP] Glebe Farm Bed Gledstone Kennels Beds Gleilyd Coal (South Wales) Glen Achall Psammite and Semipelite Member Glen App Conglomerate [Obsolete Name and Code: Use GAP] Glen App Conglomerate Member Glen App Group [Obsolete Name And Code: Use CLG] Glen Baddoch White Limestone Glen Balleira Formation Glen Banchor Subgroup Glen Banchor Succession [Obsolete Name and Code: Use GLBA] Glen Banvie Formation Glen Banvie Pluton Glen Banvie Series [Obsolete Name and Code: Use DAGB] Glen Bay Gabbro Intrusion Glen Bay Granite Intrusion Glen Beag Schist [Obsolete Name and Code: Use GBSC] Glen Buck Pebbly Psammite Formation Glen Caladale Formation Glen Calcareous Member Glen Clunie Graphitic Schist Formation Glen Clunie Schist Formation [Obsolete Code: Use GCGS] Glen Coal (West Lothian) Glen Coe Quartzite Member Glen Coe Quartzite Member [Obsolete Code: Use DAGQ] Glen Coe Sedimentary "Series" [Obsolete Name And Code: Part Of GLVO] Glen Coe Volcanic "Series" [Obsolete Name And Code] Glen Coe Volcanic Formation [Obsolete Name and Code: Use GLVO] Glen Derry Diorite Glen Dessary Intrusion [Obsolete Name and Code: Use GDESY] Glen Dessary Pluton Glen Dessary Syenite S1 Glen Dessary Syenite S2 Glen Dhoo Formation Glen Doe Psammite Formation Glen Doll Pluton Glen Dubh Sandstone Formation Glen Dye Silts Formation Glen Ea's Vein Glen Effock (Pelite) Group [Obsolete Name And Code: Use GES] Glen Effock Schist Formation Glen Effock Schists [Obsolete Name and Code: Use GES] Glen Egedale Slate Formation Glen Fintaig Semipelite Formation Glen Gairn Pluton Glen Garry Vein Complex Glen Girnock Calcareous Formation Glen Gloy Quartzite Formation Glen Gour Quartzite And Pelite Formation Glen Kyllachy Granite [Obsolete Name and Code: Use GNKY] Glen Kyllachy Intrusion Glen Kyllachy Pluton Glen Lethnot (Grit) Group [Obsolete Name And Code: Use GLGT] Glen Lethnot Grit Formation Glen Lethnot Grits [Obsolete Name and Code: Use GLGT] Glen Loch Phyllite And Limestone Formation Glen Lochsie Calcareous Schist Member Glen Loin Quartzite Member Glen Loth Formation Glen Loy Complex Glen Member Glen More (Centre 1) Suite Glen Moriston Vein Complex Glen Orrin Intrusion Glen Park Volcanic Detrital Member [Obsolete Name And Code: Use GBV] Glen Park Volcanic Detrital Member [Obsolete Name and Code: Use GBV] Glen Parva Clay [Obsolete Name and Code: Use GPCL] Glen Parva Formation [Obsolete Name and Code: Use CBP] Glen Parva Member Glen Rushen Formation Glen Sanda Facies [Strontian Pluton] Glen Sannox Conglomerate Glen Scaddle Complex [Obsolete Name and Code: Use GNSC] Glen Scaddle Intrusion Glen Shee Pluton Glen Shira Subgroup And Corrieyairack Subgroup (Undifferentiated) Glen Sligachan Granite (Western Red Hills Centre: Phase 2) Glen Sluan Schist [Obsolete Name and Code: Use DCGS] Glen Sluan Schist Formation Glen Spean Subgroup Glen Suie Limestone Member Glen Taitneach Schist Member Glen Tanar Quartzite and Mica Schist Group [Obsolete Name and Code: Use TPS] Glen Tanar Quartzite Member Glen Tanner Quartzite [Obsolete Name And Code: Use GTQ] Glen Tilt Intrusive-Complex Glen Turret Psammite And Semipelite Member Glen Urquhart Complex Glenade Sandstone Formation Glenade Sandstone Formation And Bellavalley Formation (Undifferentiated) Glenarm Chalk [Obsolete Name and Code: Use GAC] Glenarm Chalk Formation Glenarm Chalk Member [Obsolete Name and Code: Use GAC] Glenashdale Sill (South Arran) Glenbervie Porphyry [Obsolete Name and Code: Use LNP] Glenboig Limestone Glenboig Lower Fireclay (Central Coalfield) Glenboig Marine Band Glenboig Upper Fireclay (Central Coalfield) Glenbuchat Graphitic Schist Formation Glenbuck Group Glenbuck Group And Monks Water Group (Undifferentiated) Glenburn Volcanic Detrital Member [Obsolete Name and Code: Use GBV, GPVD] Glenburn Volcaniclastic Member Glencar Limestone Formation Glencartholm Volcanic Beds [Obsolete Name and Code: Use GV] Glencartholm Volcanic Group [Obsolete Name and Code: Use GV] Glencartholm Volcanic Member Glencoe Caldera-Volcano Complex Glencoe Quartzite [Obsolete Name and Code: Use DAGQ] Glencoe Quartzite Member [Obsolete Name and Code: Use DAGQ, GCOEQ] Glencoe Ring Intrusions Glencoe Ring Intrusions, Early Fault Intrusion Glencoe Ring Intrusions, Main Fault Intrusion Glencoe Volcanic Formation Glencolumbkille Limestone Glencolumbkille Pelite Formation Glendaruel Limestone Glendearg Formation Glendian Laminated Gabbro Zone Glendouran Breccia Formation Glendowran Formation Glendun Formation Glendun Schists [Obsolete Name And Code] Glenelly Formation Glenelly Formation (A) [Obsolete Code: Use GLLY] Glenelly Formation (B) [Obsolete Code: Use GLLY] Glenelly Formation [Obsolete Name and Code: Use GLLY] Glenelly Greenbeds [Obsolete Name and Code: Use DCGG] Glenfarne Dolerite [Obsolete Name And Code] Glenfiddich Pelite Formation Glenfinnan Division [Obsolete Name And Code: Use GLEN] Glenfinnan Group Glenfinnan Group And Loch Eil Group (Undifferentiated) Glenfoot Beds [Obsolete Name And Code: Use (Part Of) DYF] Glenfuir Coal [Central Coalfield] Glenga Amphibolite Member Glengawna Formation Glengawna Formation (Obsolete Code: Use GAA) [Obsolete Name and Code: Use GAA] Glengawna Formation [Obsolete Code: Use GAA] Gleniffer Lava Member Glenkeel Member Glenkiln Black Shales [Obsolete Name and Code: Use GBS] Glenkiln Shale Formation Glenkiln Shales [Obsolete Name and Code: Use GBS] Glenlee Formation Glenlivet Granite Glenluce Intrusion Glenmard Mudstone Member Glenmore Member Glenn Member Glennoo Limestone Formation [Obsolete Name And Code] Glenramskill Sandstone Formation Glenshalloch Shale Formation [Obsolete Name and Code: Use GLSH] Glenshalloch Shales Glenshesk Tuff Formation Glenshirra Subgroup Glenshirra Succession [Obsolete Name and Code: Use GRGL] Glenstaghey Formation Glentane Hill Sill Glentham Formation Glenvale Formation [Obsolete Name and Code: Use GEF] Glenvale Sandstone Formation Glenview Limestone Member Glenwells Conglomerate Formation Glenwells Shale Formation Glenwhan Formation [Obsolete Name And Code: Use PPF] Glenwhargen Formation Glion Cam Formation [Obsolete Name and Code: Use CRMR, GLDH] Glion Cam Unit [Obsolete Name and Code: Use GLDH] Globe Coal (Somerset) Gloddaeth Purple Sandstone Formation Glos Oolite Series [Obsolete Name and Code: Use SDT] Glur-Bheinn Member Glycymeris Sandstone Glyn Dyfrdwy Group [Obsolete Name And Code] Glyn Formation Glyn Gower Formation [Obsolete Name and Code: Use GYG] Glyn Gower Siltstones [Obsolete Code: Use GYG] Glyn Gower Siltstones Member Glyn Grit [Obsolete Name and Code: Use GYN] Glyn Grit And Limestone [Obsolete Name And Code: See GYN] Glynbourne Hardgrounds Glynch Valley Formation Glynde Beds Glynde Marls (One) Glynde Marls (Two) Glyngwilym Coal (South Wales) Glynllifon Trachydacite Glynn Hill Andesite [Obsolete Name And Code] Glyptograptus Teretiusculus Shales [Obsolete Name and Code: Use LRM] Gnapiog Coal Gnapiog Coal (South Wales) Gneisses [Obsolete Name And Code: Unnamed Part Of MVC] Goat Gills Member Goat Island Limestone Goat Scar Dacite Member Gobb Sill Goblin Combe Oolite Formation Gobnascale Pelite Member [Obsolete Name And Code] Godir Rhyg Mudstone Member Godir Tudur Mudstone Member Godolphin Intrusion Godor Ash [Obsolete Name and Code: Use GOT] Godor Tuff Member Golan Burn Member Golan Well Pebbly Psammite Member Golden Coal Golden Coal (Lothian) Golden Coal (South Wales) Golden Coal [South Wales Coalfield] Goldenberry Hill Sill Goleugoed Formation Golf Course Golspie Formation Golt [Obsolete Name and Code: Use GLT] Gomersal Rock Gonachan Glen Linear Vent-System Gonerby Member [Obsolete Name And Code: See DYS] Goniatites Spiralis Beds [Obsolete Name And Code] Goodall's Coal Goodig Coal (South Wales) Goodig Coal [South Wales Coalfield] Goodockhill Fireclay (Central Coalfield) Goodockhill Slatyband Ironstone (Central Coalfield) Goodrington Member Goodwick Volcanic Formation Goose Sandstone Member Gop Hill Limestone [Obsolete Name and Code: Use LNML] Gordale Limestone Member Gordon House Member Gorestown Mudstone Member Gorge Sandstone Gorllwyn Coal (South Wales) Gorllwyn Grits [Obsolete Name and Code: Use MOH] Gorllwyn Rider Coal (South Wales) Gorllwyn-Fach Member Gormack Lavas Member Gormire Limestone Member Gorpley Grit Gorse Hall Rock Gorse Member [Onshore] Gorse Mudstone Member Gorsley Limestone Gorteagh Tonalite Gortfinbar Conglomerate Formation Gortnagross Sandstone Member Gortnaree Sandstone Member Gortnaskea Coal (Dungannon) Gosford Bay Sill Gosforth Glacigenic Formation Gossabrough Metadiamictite Formation Gossan Gourdie Conglomerate Formation Gourdie Conglomerate Formation [Obsolete Name And Code: See HCF] Gourdon Formation [Obsolete Name and Code: Use GNF, RCC] Gourdon Harbour Sandstone Member [Obsolete Name And Code: See GNF] Gourdon Sandstone Formation Gourock Formation Gourock Granite Gourock Sand Formation [Obsolete Name and Code: Use GOSA] Gourock Sand Member Gourock Sandstone Member Gouther Crag Breccia Member Gouther Crag Member [Obsolete Name and Code: Use GRCG] Govan Blackband Ironstone Govan Blackband Ironstone (Glasgow) Govan Coal Gowk Stane Volcaniclastic Member Gowk Stane Volcaniclastic Member [Duplicate Lexicon Entry: Use GOWK] Gowkstane Member [Obsolete Name and Code: Use GOWK] Gowlaun Shale [Obsolete Name and Code: Use GOS] Gowlaun Shale Formation Gowlaun Shale Formation, Lackagh Sandstone Formation And Bencroy Shale Formation (Undifferentiated) Gowna Group Gowrie Member Gowrie Silt Member [Obsolete Name And Code: Use GWR] Gracilis Marine Band [Obsolete Name And Code: Use R2A1] Graianog Sandstone Graianog Sandstone Formation [Obsolete Name And Code: See Allt Lwyd Formation And Supplementary Information And ] Graig Coal (South Wales) Graig Fawr Limestone Member Graig-Wen Sandstone Formation Graigog Coal (South Wales) Graigog Marine Band Graigog Marine Band [Local Name: See MTMB] Graigog Rider Coal (South Wales) Graigola Coal Graigola Coal (South Wales) Grain Burn Member Grain Heads Siltstone Member Grainbeck Limestone Grainsgill Greisen Grammysia Bed [Obsolete Name and Code: Use CWGL] Grammysia Beds [Obsolete Name and Code: Use CWGL, GYB] Grammysia Member Grampian Catchments Subgroup Grampian Division [Obsolete Name And Code: Use GRAM] Grampian Group Grampian Group (Undivided) [Obsolete Name and Code: Use AUGL] Grampian Group And Appin Group (Undifferentiated) Grampian Group and Dava Succession (Undifferentiated) Grampound and Probus Series [Obsolete Name and Code: Use GRO, PORO] Grampound Formation Grampound Grit [Obsolete Name And Code: Use TRSA Or GRAD] Grampound Group [Obsolete Name and Code: Use GRAD] Gramscatho Beds [Obsolete Name and Code: Use POAN, GRO] Gramscatho Group Gramscathos Beds [Obsolete Name and Code: Use GRO] Granby Limestones [Obsolete Name and Code: Use GRBL, SMD] Granby Member Grange Crags Andesite Member Grange Formation [Obsolete Name and Code: Use GROS] Grange Hill Sand Formation Grange Member Grange Sandstone Grange Sandstone Member [Obsolete Name and Code: Use GRNS] Grange-Over-Sands Formation Grangemouth Beds [Obsolete Name and Code: Use GMSI] Grangemouth Formation Grangemouth Silt Member Granite Grant Sand Member [Obsolete Name and Code: Use MANS] Grantham Formation Grantham Formation And Northampton Sand Formation (Undifferentiated) Granton Sandstone Granton Sandstones Grantown Formation Grantown Granite Pluton Grantown Pluton [Obsolete Name and Code: Use GRTN] Graptiliferous Mudstones [Obsolete Name and Code: Use SKB] Graptolite Shales Gras Isaf Coal (South Wales) Gras Uchaf Coal (South Wales) Grassington Grit Grassington Grit Formation [Obsolete Name and Code: Use GGF] Grauer Salzton Formation Gravel Caverns Conglomerate Member Gravel terrace [Obsolete Name and Code: Use KINGM, DOWNF, BACKC] Gravel Terraces [Obsolete Name and Code] Gravel, sand and loam [Obsolete Name and Code: Use CWSG] Graveland Lens Member Graven Complex Gray Sandstone Group Grayber Limestone Grays Brickearth [Obsolete Name and Code: Use ILSI] Greasborough Coal Great Arc Sandstone Great Britain Glacigenic Supergroup [Obsolete Name and Code: Use GBG] Great Britain Superficial Deposits Supergroup Great Caverns Conglomerate [sic] [Obsolete Name and Code: Use GCC] Great Coal (Somerset) Great Coal (Titterstone Clee) Great Cockup Picrite [Obsolete Name And Code] Great Conglomerate [Obsolete Name and Code: Use GCGL] Great Conglomerate Formation Great Course [Obsolete Name and Code: Use GTCC] Great Course Coal (Somerset) Great Easby Clay Formation Great Easby Member Great Estuarine Group Great Estuarine Series [Obsolete Name and Code: Use GEST] Great Farlow Sandstone Formation Great Glen Fault Zone Great House Agglomerate Great House Intrusion Great Ladstones Breccia Member Great Ladstones Member [Obsolete Name and Code: Use GTLA] Great Langdale Tuff Formation Great Limestone [Obsolete Name and Code: Use GL] Great Limestone Member Great Mine Limestone Great Oolite [Obsolete Name and Code: Use CFDO, GOG] Great Oolite Clay [Obsolete Name And Code: See Blisworth Clay, BWC] Great Oolite Formation [Obsolete: See CFDO] Great Oolite Group Great Oolite Limestone [Obsolete Name And Code: Use BWL, GOG or CFDO] Great Oolite of Malmesbury District [Obsolete Name and Code: Use CSHF] Great Oolite Series [Obsolete Name and Code: Use GOG] Great Orme Limestone Great Orme Limestone Formation [Obsolete Name And Code: Use LGHL] Great Quartzite Great Row Coal (North Staffordshire) Great Row Formation [Obsolete Name and Code: Use GTR] Great Row Measures [Obsolete Name and Code: Use GTR] Great Row Member Great Scar Limestone [Obsolete Name and Code: Use GSCL] Great Scar Limestone Group Great Seam Coal (Lothian) Great Strickland Limestone Great Vein [Obsolete Name and Code: Use GRTC] Great Wanney Crags Sandstone Great Whin Sill Great Whinscale Dacite Member Great Whinscale Member [Obsolete Name And Code: See TNM] Great Whinscale Rhyolite [Obsolete Name and Code: Use GWD] Great White Sandstone [Obsolete Name and Code: Use ESA] Great Wood Gravel Member Greatmoor Hill Vent Green Ammonite Beds [Obsolete Name and Code: Use GAB] Green Ammonite Member Green Beds "Sensu Stricto" [Obsolete Name and Code: Use RTF] Green Beds (A) [Obsolete Name and Code: Use GRE] Green Beds (B) [Obsolete Name and Code: Use GRE] Green Beds [Duplicate Lexicon Entry: Use -2831] Green Beds [Obsolete Name and Code: Use GRE] Green Beds [Obsolete Name and Code: Use PRC] Green Beds Formation Green Cleugh Siltstones Green Coal (South Wales) Green Coal [South Wales Coalfield] Green Croft Till Member Green Grove Sandstone Green Keuper Basement Beds [Obsolete Name and Code: Use RTF] Green Lane Coal Green Member Green Member [Duplicate Lexicon Entry: Use GRE] Green Mudstones "Member" Green Slates Greenan Castle Ash [Obsolete Name and Code: Use GCP] Greenan Castle Pyroclastic Member Greenan Formation [Obsolete Name and Code: Use GNNS] Greenan Sandstone Formation Greenbeds [Obsolete Name and Code: Use LKV] Greencastle Green Beds Greencliff Beds [Obsolete Name and Code: Use BF] Greengairs Lime Coal (Airdrie; Central Coalfield) Greengairs Smithy Coal Greengairs Smithy Coal (Central Coalfield) Greengate Well Limestone Greenhall Limestone [Obsolete Name And Code: Use DWL] Greenheugh Sandstone Formation Greenhill Andesite Member [Obsolete Name And Code] Greenhill Felsic Member Greenhow Limestone Greenmoor Rock Greenoakhill Sand and Gravel Member Greensand and Sandstone [Obsolete Name and Code: Use SYS] Greensand Formation Greensand Group [Obsolete Name And Code: See UGS] Greensand Of Morvern [Obsolete Name And Code: Use MOGR] Greensands [Obsolete Name and Code: Use HBG] Greenscoe Tuff Formation Greenses Coal (Northumberland) Greenses Limestone [Obsolete Name and Code: Use OXL] Greenshiels Intrusion Greenside Volcaniclastic Member Greenstone And Spilite Volcanics Greenstone And Spilite Volcanics [Obsolete Name And Code] Greenstone Conglomerate Greenstone Conglomerate [Obsolete Name And Code] Greenway Tuff Member Greenyards Coal Greeto Lava Member Greeto Lavas [Obsolete Name and Code: Use GRLA] Gregynog Mudstone Member Grendon Member Grendon Member And Ecton Member (Undifferentiated) Grennan Point Formation Of The Rhins Of Galloway Grenoside Rock Grenoside Sandstone Grenoside Sandstone Coal Grenzanhydrit Formation Greta Grit Greta Grits Formation [Obsolete Name and Code: Use GRGT] Gretna Till Formation Grey Grey and Tea Green Marls and Sully Beds [Obsolete Name and Code: Use BAN] Grey Beds Grey Chalk Member [Obsolete Name and Code: Use ZZCH] Grey Chalk Subgroup Grey Downtonian [Obsolete Name And Code] Grey Friar Tuff Member Grey Grits Grey Grits Formation Grey Limestone Series [Obsolete Name And Code] Grey Limestone, Upper [Obsolete Name And Code: Use CFML] Grey Marl Member Grey Marls [Obsolete Name and Code: Use BAN] Grey marls and yellow sandstones with chert [Obsolete Name and Code: Use ISMS] Grey Measures Of Yorkshire And Nottingham [Obsolete Name And Code: See PLCM And PMCM] Grey Salt Clay Member Grey Sands [Obsolete Name and Code: Use GSDT] Grey Sandstone Facies [Obsolete Name and Code: Use DASA] Grey Sandstone Member Grey Sandstone Series [Obsolete Name and Code: Use GSA] Grey Shale Grey Shale Member Grey Shale Series [Obsolete Name and Code: Use GREY] Grey Shales [Obsolete Name and Code: Use GREY] Grey Shales Formation [Obsolete Name and Code: Use GREY] Grey Slate [Obsolete Name and Code: Use TVS] Grey's Crag Coal (Northumberland) Greylake Member Greys Crags Greys Limestones Member Greystoke Till Formation Greystone [Obsolete Name and Code: Use TAL, TBF] Greystone Formation [Obsolete Name And Code: Use BREN] Greystone or Passage Beds [Obsolete Name and Code: Use YED] Greywacke Conglomerate [Obsolete Name and Code: Use GRWC] Greywacke Conglomerate Formation Gribin Mudstones Gribun Chalk [Obsolete Name and Code: Use GRIB] Gribun Chalk Formation Grid Sandstone Member Grieston Formation Grieston Slates [Obsolete Name and Code: Use GSN] Griffe Grange Bed [Obsolete Name And Code: Part Of WDL] Grigadale Microgranite Intrusion Grimley Andesite Grimley-Type Porphyroid [Obsolete Name and Code: Use GYA] Grindslow Shales [Obsolete Name and Code: Use GDS] Grindslow Siltstones Grindstone Limestone Grindstone Post Member Grindstone Sandstone Grindstone Sill Grinllwm Grits Grinllwm Slates Grinshill Sandstone [Obsolete Name And Code Use: HEY] Grinstead Clay [Obsolete Name and Code: Use GRC] Grinstead Clay Formation [Obsolete Name and Code: Use GRC] Grinstead Clay Member Gristhorpe Member Grit Sill Grits Group [Obsolete Name and Code: Use WHG] Grits in Skiddaw Slates [Obsolete Name and Code: Use SKG, LWF] Gronant Group [Obsolete Name and Code: Use CLWYD, CRAV] Gronant Group [Obsolete Name and Code: Use CRAV] Grorudite Swarm ['Grorudite' Swarm] [Obsolete Name And Code: See PARH] Grorudite Swarm [Obsolete Name and Code: Use PARH] Group XVI [Obsolete Name and Code: Use CAW] Grouping of Harford Sands [Obsolete Name and Code: Use HFD] Grove Coal (South Staffordshire) Grovesend Beds [Obsolete Name and Code: Use GDB] Grovesend Formation Grovesend Member [Obsolete Name and Code: Use GDB] Grudaidh Formation Grugie Pluton Grumack Hill Quartzite Member Gruney And Fethaland Formation Gruting Greenschist Formation Gryphaea Bed [Obsolete Name and Code: Use GRGR] Gryphaea Grit [Obsolete Name and Code: Use GRGR] Gryphite Grit [Obsolete Name and Code: Use GRGR] Gryphite Grit and Buckmani Grit [Obsolete Name and Code: Use GRGR] Gryphite Grit Member Gualdswell Lava Member Gubaveeny Shale Member Gubbin And Balls Ironstone (South Staffordshire) Gubbin Ironstone (South Staffordshire) Gubbin Ironstone [Also Known As Grains Or Chance] Gubeon Coal (Northumberland And Durham) Gubeon Marine Band [Duplicate Lexicon Entry: Use GUMB] Gubeon Marine Band [Local Name: Use AMMB] Guirdil Arkose [Obsolete Name and Code: Use TCAS, TCSM] Guirdil Member Guiseley Grit Gull Rock Shale Gullane Formation Gully Member Gully Oolite Formation Gully Redbed Formation Gun Gardens Main Marl Gun Gardens Marls (One) Gun Gardens Marls (Three) Gun Gardens Marls (Two) Gunnerton Fell Limestone Gunnscroft Limestone Gunnscroft Limestone Bed [Obsolete Name and Code: Use ARYL] Gunthorpe Formation [Obsolete Name and Code: Use GUN] Gunthorpe Member Gupton Formation Gur Coal (Coalbrookdale)