Full listing of The British Geological Survey Lexicon of Named Rock Units
"Albany Mudstones With Limestone Nodules"
"Bedded Tuff"
"Ferruginous Limestone Series"
"Knoll Reef Limestones"
"Lower River Terrace Deposits"
"Lower" St Bees Sandstone
"Meneage Crush Zone"
"Red Series" Clays Or Glaciolacustrine Deposits
"Sands And Gravels Of Faringdon"
"Syenite On Ridge Between Scaw'd Law And Roger Law"
"Upper" St Bees Sandstone
'Expanded Standard Black Band Succession'
'F' Seam
'Fereneze Lavas'
'Fulmar Sands'
'Gleniffer Lavas'
'Greystone'
'H' Seam
'Lower Unit' of the Middle Bagshot Beds
'Norwich Chalk'
'Puffin Formation'
'S Airde Beinn Plug
'Syenite' Or 'Diorite Intrusions'
'Varicoloured Unit' Of The Dunrobin Bay Formation
(Approximates To Productive Coal Measures)
(Kingsteps) Nairn Sandstones
(Localised Part Of) Cwm Crychan Formation
(Part Of The) Lower Old Red Sandstone
(Sandstone In) Cwm Crychan Formation
(Unnamed Limestone)
(Unnamed) Andesites
? Lateral Equivalent Of Glenfinnan Group
? Lateral Equivalent Of Morar Group
?Glenramskill Formation
[Reticuloceras] Bilingue Marine Band
15/16-6 Sand Member
1st Terrace Deposits (River Severn)
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)
5 Foot Vein
5th Terrace Of River Lark
5th Terrace Of River Lark (Clayton 1983)
6th Terrace (River Severn)
80 Yard Band Coal
80 Yard Band Coal (West Yorkshire)
80 Yard Rock
A Variety Of Local Names
A'Mharagach Member
A'Mhoine Psammite Formation
A-Bed Evaporite
Abbey Conglomerate
Abbey Gravel(s)
Abbey Head Bed
Abbey Head Formation
Abbey Head Member
Abbey Sand And Gravel
Abbey Shale Formation
Abbey Wood Member
Abbeyhill Shales
Abbotsbury Cornbrash Formation
Abbotsbury Iron Ore
Abbotsbury Ironstone
Abbotsbury Ironstone Formation
Abbotsford Flags
Abbotsford Flags and Grieston Shales
Abbotsgrange Beds
Abbotsgrange Silt Member
Abbotsham Beds
Abbotsham Formation
Abbrook Clay And Sand
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
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
Abercriban Oolite Formation
Abercriban Oolite Group
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
Aberdeen Ground Formation
Aberdeen Pluton
Aberedw Formation
Aberfoyle Slate
Aberfoyle Slate Formation
Aberfoyle Slates
Abergeldie Pluton
Abergorki Coal (South Wales)
Abergwilli Formation
Aberkenfig Formation
Aberlady Formation
Abersytwyth Grits Formation
Aberystwyth Grits Group
Abhainn Mhor Gabbro Intrusion
Abington Formation
Accerhill Sandstone
Accerhill Sandstone Formation [Obsolete entry, 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
Achreamie Sandstone Formation
Achrimsdale Sandstone Member
Achscrabster Flagstone Formation
Achscrabster Flagstone Member
Acklington Dyke
Acklinton Formation Of Bowen (1999)
Acklinton Till Formation
Ackton Rock
Ackworth Division
Ackworth Member
Ackworth Rock
Acre Coal
Acre Coal (Northumberland)
Acre Limestone
Acre Limestone [Obsolete Name And Code: Use TYL]
Acton Group
Acton Park Limestone
Acton Scott Formation
Acton Scott Group
Acton Scott Limestone
Acton Turville Beds
Acuminata Beds
Acutistriatum Band
Acutistriatum Bed
Acutistriatum-Comptoni Bed
Adail Mudstones Formation
Adamson Band
Addingham Edge Grit
Addingham High Moor Grit
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: See CGA]
Agneash Grits
Agnew's Hill Tuff Member
Agricultural Cutting
Aid Crag Sandstone
Aikbank Farm Glacigenic Formation
Ailleag Diamicton Formation
Ailleag Diamicton Member
Ailnack Phyllite And Limestone Formation
Ailsa Craig Microgranite
Ailstone Member
Ailstone Member (Warwickshire Avon)
Ailstone Terrace Deposits (Warwickshire Avon)
Airdrie Blackband Coal (Central Coalfield)
Airdrie Blackband Ironstone (Central Coalfield)
Airdrie Virtuewell Coal (Central Coalfield)
Airfield
Airth Shellband
Airy's Bridge Formation
Airy's Bridge Group
Airy's Bridge Tuff Formation
Aisholt Limestone
Aisla Formation
Aisla Sequence
Aislaby Group [Obsolete Name And Code: See ZG]
Aith - Spiggie Pluton
Akers Steps And St Margarets Members
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
Albrighton Marine Band [Local Name: Use AMMB]
Albrighton Seam (Cumbria)
Aldeburgh Member
Aldeby Sand And Gravel Member
Aldeby Sands And Gravels
Alderbury Breccia In Erbistock Beds
Alderney Sandstone
Alderwood Mudstone
Alderwood Mudstone Member
Aldie Till Member
Aldress Shale
Aldress Shale Formation
Alecks Coal (Lothian)
Alecs Coal (Cheadle)
Alkaid Member
Alkaline Basic Igneous Rocks In The Orkneys
Alla Glen Limestone Member
Allargue Graphitic Schist Member
Allens Coal (East Midlands)
Allenton Sand And Gravel
Allenton Terrace Deposits
Aller Gravel
Aller Gravel Formation
Aller Halite Formation
Allermuir Group [Obsolete Name And Code: Use ALMR]
Allermuir Volcanic Member
Allesley Conglomerate
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
Allt Darrarie Intrusion
Allt Ddu Mudstone Formation
Allt Ddu Mudstones
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
Allt Na H-Airbhe Member
Allt Nam Biorag Psammite Member
Allt Odhar Peat Formation
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)
Alluvial and Glacial Deposits (Undifferentiated)
Alluvial And Glacial Drift (Undifferentiated)
Alluvial Cone
Alluvial Delta
Alluvial Deposits And Peat
Alluvial Deposits, Buried, Postglacial Estuarine-Marine [See Descriptions For Limitations Of Use]
Alluvial Deposits, Postglacial, Terrestrial [See Descriptions For Limitations Of Use]
Alluvial Fan
Alluvial fan deposits
Alluvial Fan Deposits 1
Alluvium
Alluvium 1
Alluvium 2
Alluvium and Alluvial Fan Deposits (Undifferentiated)
Alluvium And River Terrace Deposits
Alluvium and River Terrace Deposits (Undifferentiated)
Almscliff Grit [Obsolete Name And Code: Use WWG]
Alne Glacial Lake Formation
Alne Glaciolacustrine Formation
Alne Hills Mudstone Bed
Alness Member
Alness Spiculite Formation
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
Alphington Breccias
Alport Sandstone
Alston Formation
Alstonfield Limestone [Obsolete Name And Code: Within BLL]
Altagoan Formation
Alteen Shale Member
Altena Group
Alternata Limestone
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
Alum Shale
Alum Shale (Of The Glasgow Area)
Alum Shale Member
Alum Shale Series
Alveley Member
Alves Beds
Alves Formation
Am Binnein Formation
Am Binnein Sandstone Formation
Am Binnein Sandstones Formation
Amaliae Marine Band
Ambaston Member
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
Ammonites Planorbis Beds
Amphibolite (Of Guernsey And Sark)
Amphibolite And Calcsilicate-Rock Of Uncertain Origin
Amphibolite Of Uncertain Origin
Ampthill Clay
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
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
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
Andrew Sandstone unit
Andrews Coal (Lothian)
Andsell Mudstone Member
Angulata Beds
Angulata Clays
Angulatum Clays [Obsolete Name And Code: Use BNBM]
Angus Sand
Angus Sands
Anker Sand And Gravel
Annaclare Group
Annagher Coal (Dungannon)
Annandale Sandstone
Annandale Sandstone Bed
Annandale Sandstone Beds
Annandale Sandstone Member
Annat Bay Formation
Annie Formation
Annie Sequence
Anstruther Beds
Anstruther Formation
Anthracoceras Paucilobum Marine Band
Anthracoceratites Marine Band
Antrim Lava Group
Anvil Limestone
Aonach Beag Semipelite Formation
Apestor Limestone
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
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
Applethwaite Beds
Applethwaite Beds [Obsolete Name And Code: Partially Replaced By AP]
Applethwaite Formation
Applethwaite Group
Applethwaite Member
Applethwaite Series
Appleton Ell Coal
Appletree Limestone
Appletree-Worth Sandstone
Appletreeworth Volcanic Formation
Approximately Equivalent To The Monograptus Leintwardinensis Shales.
Aptian And Albian Rocks (Undifferentiated)
Aqueduct Coal (North Wales)
Aqueduct Grit [Obsolete Name And Code: See GS]
Aqueduct Rock
Aran Boulder Bed Member
Aran Fawddwy Formation
Aran Fawddwyf Formation
Aran Volcanic Group
Arbigland Beds
Arbigland Group [Obsolete Name And Code: Use ARLM]
Arbigland Group [Use ARLM]
Arbigland Limestone Formation
Arbigland Limestone Member
Arbigland Member
Arbikie Diamicton Member
Arbriachan Intrusion
Arbroath Formation
Arbroath Sandstone
Arbroath Sandstone Formation
Arbroath Sandstone Member
Arbroath Sandstones
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: 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
Arden Limestone
Arden Sandstone
Arden Sandstone Formation
Arden Sandstone Group
Arden Sandstone Horizon
Arden Sandstone Member
Ardersier Silts Formation
Ardgour Granite Gneiss
Ardingly Sandstone
Ardingly Sandstone Member
Ardleigh Member
Ardley Beds
Ardley Beds And Bladon Beds
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
Ardmore Conglomerate Member
Ardmore Formation
Ardmore Grit
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
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
Ardwell Bridge Basic Volcanic Member
Ardwell Bridge Lavas
Ardwell Farm Formation
Ardwell Flags
Ardwell Flags Formation (Topmost Beds)
Ardwell Formation
Ardwell Group
Ardwell Subgroup
Ardwick Formation
Ardwick Group [Obsolete Name And Code: See WAWK]
Ardwick Limestones
Ardwick Marl [Obsolete Name And Code: See ETM]
Ardwick Marl(s)
Ardwick Marls
Arenaceous Coal Formation [Obsolete Name And Code: Use PES]
Arenaceous Limestone
Arenaceous Series
Arenig And Llanvirn Rocks (Undifferentiated)
Arenig Ballantrae Volcanic Complex (Assumed To Be Part Of)
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
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
Arley Mine Coal
Arley Sandstone
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
Armsheugh Member
Armsheugh Sand and Gravel Formation
Arnage Pluton
Arnbath Psammite Formation
Arngrove Spiculite Member
Arngrove Stone
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
Artificial Lagoon (Undivided)
Artificial Pond Or Artificial Lake
Artificially modified ground
Artificially Subsided Ground
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
Arun Terrace Deposits, Facet 2b
Arundel Sponge Beds
Arvonian [Obsolete Name And Code: Use ARN]
Arvonian Formation
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
Ashclough Mine Coal
Ashcombe Gravel Member
Ashdown Beds
Ashdown Beds (A) [Obsolete Code: Use ASD]
Ashdown Beds (B) [Obsolete Code: Use ASD]
Ashdown Formation
Ashdown Sand
Ashdown Sand(s) [Obsolete Name And Code: Use ASD]
Ashfell Limestone Formation
Ashfell Sandstone
Ashfell Sandstone Formation
Ashfield Coking Coal (Central Coalfield)
Ashfield Rider Coal
Ashford Beds
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
Ashgill Shales
Ashington Coal
Ashington Coal (Northumberland)
Ashington High Main Coal
Ashington High Main Coal (Northumberland) [Obsolete Code: Use ASHN]
Ashness Tuff Member
Ashover Coal
Ashover Grit
Ashover Grit (Main Bed)
Ashow Formation
Ashow Group
Ashprington Volcanic Formation
Ashprington Volcanic Series
Ashton Formation
Ashton Great Coal (Bristol Area)
Ashton Great Coal (South Lancashire)
Ashton Great Mine
Ashton Great Mine Coal
Ashton Little Coal (Bristol Area)
Ashton Mudstone Member
Ashton Mudstone Member And Crackington Formation (Undifferentiated)
Ashton Shale Member
Ashton Shale Member (Of Crackington Formation)
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
Askham Limestone Member
Assapol Group
Assel Conglomerate
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
Assynt Metapicrite Subswarm [Obsolete Name And Code: Use BMP]
Assynt Porphyritic Trachyte Swarm
Assynt Till Formation
Assynt Vogesite Swarm
Asta Spilite Group
Asta Spilitic Formation
Asta Spilitic Formation [Obsolete Code: Use ASSP]
Asta Spilitic Group
Astarte Bed
Astbury Formation
Astbury Limestone
Astbury Limestone Member
Astbury Sandstone Member
Astbury-Limestone-Shales
Astell Coal (South Wales)
Aston Beds
Aston Coal (Oxfordshire)
Aston Limestone Formation
Aston Mudstone Formation
Athais Till Formation
Athelstan Oolite Formation
Athelstaneford Sill
Atherfield Clay
Atherfield Clay 'Group'
Atherfield Clay Formation
Atherfield Clay Formation And Weald Clay Formation (Undifferentiated)
Atherfield Clay Sensu Fitton (1847 P.296 Part Of Bed 3)
Atherfield Clay Series
Atherfield Group
Atkinson & Fordingdale Ignimbrite Group
Atlantean Supersuite
Auch Gleann Psammite Formation
Auchencar Burn Sandstone Member
Auchencar Burn Sandstones
Auchencar Burn Sandstones Formation
Auchencar Lava
Auchencar Lava Member
Auchencar Sandstone Formation
Auchencrow Burn Formation
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
Auchingree Four Inch Coal
Auchinlea Sandstone
Auchivarie Psammite Formation
Auchleuchries Sand and Gravel Formation
Auchlyne Formation
Auchmeddon Gravel
Auchmeddon Gravel Formation
Auchmeddon Gravel Member
Auchmeddon Member
Auchmithie Conglomerate Formation
Auchmithie Conglomerate Member
Auchnacloy Sandstone Member
Auchnahillin Monzonite
Auchnahyle Formation
Auchtitench Formation
Auchtitench Sandstone Formation
Aughnacloy Sandstone Formation
Aughnacloy Sandstone Member [Obsolete Name And Code: Use ACSF]
Auglish Sandstone Member
Auk Formation
Auldearn (Park) Pluton
Auldearn Granite Pluton
Auldshields Blackband
Auldshields Musselband (Central Coalfield)
Auldthorns Formation
Aulrothie Sandstone Member
Aultbea Formation
Aurora Formation
Austwick Flags & Grits (King And Wilcockson, 1934)
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]
Avon Fifth Terrace Deposits
Avon First Terrace [Deposits]
Avon Fourth Terrace [Deposits]
Avon Group
Avon Second Terrace [Deposits]
Avon Third Terrace Deposits
Avon Valley Formation
Avoniel Anhydrite [Obsolete Name And Code]
Avoniel Limestone
Avonmouth No.1 Coal
Avonmouth No.2 Coal
Awre Formation
Axe Valley Formation
Aycliff Member
Aydon Shell Bed
Aylesbeare Group
Aylesbeare Mudstone Formation
Aylesbeare Mudstone Group
Aylesbury Sand
Aymestry Group
Aymestry Limestone Formation
Aymestry Rock
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
Ayrshire Bauxitic Clay Formation
Ayrshire Bauxitic Clay Member
B-Bed Evaporite
Babbacombe Slates
Backet'S Copse Gravel Member
Backfolds Palaeosol
Bacton Green Till Member
Bacton Group
Bacton Member
Bacton Member [Duplicate: use BACTO]
Bad An Loin Quartzite Member
Bad Na H-Achlaise Ultramafic Rocks
Bad Step Tuff
Bad Step Tuff Member
Badanloch Granite Sheets
Badbea Breccia
Badbea Breccio-Conglomerate Member
Badcall Meta-Clinopyroxene-Norite Subswarm
Badcallian (Kylesku Group) [Obsolete Name And Code]
Baddinsgill Mudstone Member
Baddoch Burn Dolomite
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
Badenoch Group
Badentinan Sand Bed
Badenyon Schist And Limestone Formation
Badsworth Division
Badsworth Member
Badsworth Rock
Baggy And Marwood Beds [Obsolete Name And Code: Use BYS]
Baggy And Marwood Slates
Baggy Beds
Baggy Sandstones Formation
Bagh Na H-Uamha Shale
Baginton Sand
Baginton Sand And Gravel
Baginton Sand and Gravel Formation
Baginton-Lillington Gravel
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
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 Code: Use BAI]
Bailey's Beds
Baillieston Member
Baillieston Till Formation
Baily's Hill Flint
Bain Valley Formation
Bakewell Formation
Bala [Obsolete Name And Code]
Bala Limestone
Bala Volcanic Series [Obsolete Name And Code]
Balachuirn Sandstone Member
Balbardie Blackband Ironstone
Balbardie Gas Coal
Balblair Intrusion
Balby Formation
Balchraggan Formation
Balclatchie Beds
Balclatchie Conglomerate [Obsolete Name And Code: Use BCH]
Balclatchie Formation
Balclatchie Formation, Ardwell Formation And Whitehouse Formation (Undifferentiated)
Balclatchie Group
Balclatchie Mudstones [Obsolete Name And Code: Use BCH]
Balcomie Beds
Balcomie Beds (Fife)
Balcreuchan Group
Balcreuchan Group (Correlated With, But Not Named)
Balcreuchan Group, Part Of Arenig Volcanic Complex (Correlated With, But No Sp
Balder Formation
Baldernock Limestone
Balderton Member
Balderton Sand And Gravel
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
Ballachulish Limestone
Ballachulish Limestone Formation
Ballachulish Pluton
Ballachulish Slate
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
Ballantrae Complex
Ballantrae Group [Obsolete Name And Code: Use BX]
Ballantrae Igneous Complex
Ballantrae Igneous Series
Ballantrae Ophiolite
Ballantrae Ophiolite Complex
Ballasalla Beds
Ballasalla Formation
Ballater Pluton
Ballaugh Formation
Ballbrook Sandstone Member
Balleich Lava Member
Ballencleuch Law Granite
Balleys Beds
Ballinamallard Formation
Ballinamallard Mudstone Formation
Balling Coal
Ballintoy Chalk Formation
Ballintoy Chalk Member
Balloch Clay Member
Balloch Formation
Balloch Member
Balls Coal (South Wales)
Ballyagen Formation
Ballyalicock Conglomerate Formation
Ballyalton Sill
Ballyboley Halite
Ballycastle Chalk Formation
Ballycastle Chalk Member
Ballycastle Pellet Chalk [Obsolete Name And Code]
Ballycastle Sandstone Group
Ballycastle White Limestone (Lower Part)
Ballycastle White Limestone (Upper Part)
Ballycraigy Plug [Obsolete Name And Code]
Ballycultra Formation
Ballydurnian Breccia Formation
Ballygalley Head Plug
Ballygawly Gneiss
Ballygomartin Sill
Ballygrant Formation
Ballygrant Limestone
Ballykelly Formation
Ballylagan Member
Ballyleighery Formation
Ballyloughan Formation
Ballymagarry Chalk Formation
Ballymagarry Chalk Member
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
Bamburgh Formation
Bampton Conglomerate
Bampton Limestone Formation
Bampton Limestone Formation [Duplicate Code: Use BPLM]
Bampton Limestone Group
Bampton Limestones Group
Bampton Member
Banbury Coal (North Staffordshire)
Banbury Rock
Banchory Till Formation
Banded Group
Banded Group Within Blair Atholl Subgroup
Banded Schist Within Blair Atholl Subgroup
Banded Series Within Pale Group Of Blair Atholl Series
Bandy In Northumberland
Banffshire Coast and Caithness (Albion) Glacigenic Subgroup
Banffshire Coast and Caithness Glacigenic Subgroup
Banffshire Coast Drift Group
Banffshire Coast Glacigenic Group
Bangley Dyke
Bangley Member
Bangley Trachytic Member
Bangor Formation
Banham Beds
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
Banks Subsequence
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'
Bardon Breccia
Bardon Hill Volcanic Complex
Bardsley Loom Formation
Bardsley Rock
Bare Coal (Warwickshire)
Baren Red Group (Somerset) [Obsolete entry, use BRR]
Bargan Coal (South Lancashire)
Bargany Formation [Obsolete Name And Code: Use (Part Of) DYF]
Bargate Beds
Bargate Formation
Bargate Member
Bargate Member Of The Sandgate Formation
Bargate Sandstone Member
Barham Sands And Gravels
Bark Butts Silts Member
Barkisland Flags
Barkley Breccia Formation
Barmouth Formation
Barn Rock Member
Barn Scar Sand And Silt Member
Barnby Clays
Barnby Member
Barncraig Coal (Fife)
Barncroft Beck Beds
Barncroft Beck Member [Obsolete entry, 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
Barnwell Abbey Member
Barnwell Station Member
Barnyards Silt Formation
Baron Hill Beds
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
Barr Limestone Formation
Barr Series
Barra Formation
Barra Isles Dyke Swarm
Barracados Cherts
Barrack Hill Andesite Member
Barracks Ash
Barracks Limestone
Barras Conglomerate Formation
Barras Conglomerate Member
Barras Nose Beds
Barras Nose Formation
Barrasford Limestone
Barren Coal Measures (Upper)
Barren Flagstones
Barren Group
Barren Measures
Barren Measures (Now Group)
Barren Measures Group [Obsolete Name And Code: See WAWK]
Barren Red Formation (Somerset) [Obsolete entry, use BRR]
Barren Red Group
Barren Red Measures
Barren Red Member (Somerset)
Barrhead Grit
Barrhead Main Coal
Barrhill Group
Barriedale Flagstones
Barrington Beds
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
Barrule Slates (Manx Slates) [Obsolete Name And Code: See BRUL]
Barrule Slates And Slieau Managh Slates
Barry Harbour Limestone Formation
Barshaw Sill
Barton Beds
Barton Clay
Barton Clay Formation
Barton Formation
Barton Group
Barton Group, Bracklesham Group And Bagshot Formation (Undifferentiated)
Barton Limestone
Barton Limestone Member
Barton Member
Barton Pebble Bed [Obsolete Name And Code]
Barton Sand
Barton Sand Formation
Barytes Mine Conglomerate
Barytes Mine Conglomerate Member
Basal Andesite Sill-Complex
Basal Beds
Basal Beds Formation (Cumbria)
Basal Breccia
Basal Breccia And Sandstone
Basal Cementstones
Basal Clastics
Basal Clastics Member
Basal Conglomerate
Basal Grampian Division
Basal Gravel
Basal Gravels
Basal Green Beds (South Wales)
Basal Grit
Basal Grit (Millstone Grit Of South Wales) [Obsolete Name And Code: Use TWR]
Basal Grit (Millstone Grit)
Basal Grits
Basal Grits Group
Basal Group
Basal Hydraulic Limestone Member
Basal Member (Canna Lava Formation)
Basal Member (Eigg Lava Formation)
Basal Oil Shale
Basal Part Of Whitehills Group
Basal Pelite Formation
Basal Permian Breccia (South West)
Basal Permian Breccia [Obsolete Name And Code: See PBB]
Basal Permian Sands
Basal Permian Sands Formation
Basal Permian Sandstone
Basal Permian Yellow Sands
Basal Quartz Sandstone Formation
Basal Quartzite
Basal Quartzite Member
Basal Sand
Basal Sand And Gravel
Basal Sand Bed
Basal Sandstone
Basal Sandstone Unit
Basal Shales
Basal Shell Bed
Basal Unit Of Sandend Group
Basalanhydrit Formation
Base Bed Member
Basement Bed
Basement Beds
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 Formation [Obsolete Name And Code: See Supplementary Information]
Basement Breccia (Shetland)
Basement Conglomerate
Basement Conglomerate (Anglesey) [Obsolete Name And Code: Use LGY]
Basement Conglomerate (North West)
Basement Formation
Basement Formation (Pars)
Basement Or Bearing Grit [Obsolete Name And Code: See BGRT]
Basement Pebble Bed (Of The Upper Bagshot Beds)
Basement Sands Of The Upper Glauconite Beds
Basic Tuff (Lydol Hole) [Part Of UO]
Basic Tuffs With Basalts (Uriconian Group) [Obsolete Name And Code: Part Of UO]
Basic Volcanic Group
Basin peat
Basket Shell Bed
Baslow Coal (Derbyshire)
Bass Coal (South Staffordshire)
Bass Rock Plug
Bassenthwaite Diorite Intrusions
Bassey Mine
Bassey Mine Coal
Bassey Mine Coal (Lancashire)
Bassey Mine Coal (North Staffordshire)
Bassingfield Sand And Gravel
Bassingfield Sand And Gravel Member
Bassingham Fen Member
Bassy Coal
Bassy Coal (South Lancashire)
Bassy Mine
Bassy Mine Coal
Bastard Limestone
Bastion Steps Beds
Bastions Coal (South Lancashire)
Baston Burn Group
Baston Burn Lava Member
Batavier Formation
Batch Volcanic Beds
Batch Volcanic Member
Batch Volcanic Rocks
Batch Volcanics [Obsolete Code: Use BV]
Batchie (Blackband) Ironstone
Batchie Blackband Ironstone
Batchie Coal (Central Coalfield)
Bath Freestone
Bath Lodge Coal (Ballycastle, Northern Ireland)
Bath Lodge Lava Formation
Bath Oolite
Bath Oolite Member
Bath Oolite Member and Corsham Limestone Formation (Undifferentiated)
Bath Stone And Lower Rags
Bathampton Down Member
Bathampton Member
Bathgate Group
Bathgate Hills Volcanic Formation
Bathgate Jewel Coal
Bathgate Lavas
Bathgate Volcanic Formation
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
Bay Vein
Bays Leap Coal (Northumberland And Durham)
Bayston-Oakswood Formation
Bayston-Oakswood Group
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
Beacon Hill Flags
Beacon Hill Formation
Beacon Hill Sand And Gravel Member
Beacon Hill Tuff Formation
Beacon Hill Volcanic Formation
Beacon Hill Volcanic Group
Beacon Limestone Formation
Beacon Tuff Member
Beacon Tuffs Member
Beaconsfield Flags
Beaconsfield Gravel
Beaconsfield Member
Beadnell Coal (Northumberland)
Bealbury Formation
Bealesmill Sandstone Formation
Bealsmill Formation
Bealsmill Sandstone Formation
Beannach Metapicrite Subswarm
Beannan Buidhe Member
Bearing Grit
Bearreraig Sandstone Formation
Bearreraig Sandstone Series
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
Beckley Sands
Becton Bunny Member
Becton Sand
Becton Sand Formation
Becton Sand Formation And Chama Sand Formation (Undifferentiated)
Bed 1
Bed 3
Bed 3 (Lower Part Of Crovie Group)
Bed 3 (Upper Part) Of Crovie Group
Bed 4
Bed 4 Oolite Group
Bed 6 (part of Marker Beds)
Bed A and lower part of Bed B
Bed A, Excluding Upper Part
Bed B
Bed C
Bed D
Bed F
Bedchester Sands Member
Bedded Agglomerate Of Greenan Castle
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]
Bedrock Theme Not Mapped [For Digital Map Use Only]
Bedruthan Formation
Bedruthan Slates
Beds 1 And 2 In Crovie Group
Beds 5 And 6
Beds At A, A1 And Lower Part Of B
Beds At C
Beds At D To E
Beds At D To H
Beds At F
Beds At G And H
Beds At J To M
Beds C To H
Beds C, E
Beds D To E
Beds D To H
Beds G And H
Beds Included In 'Millstone Grit'
Beds Of 'Findon Group'
Bee Coal
Bee Low Formation
Bee Low Group
Bee Low Limestone Formation
Bee Low Limestones
Bee Low Limestones Formation (Apron-Reef)
Bee Low Limestones Formation (Knoll-Reef)
Beechcliff Sandstone
Beechwood Conglomerate Bed
Beechwood Conglomerate Bed [Obsolete code]
Beeding Beds
Beeding Flints
Beeding Hardgrounds
Beeding Marl
Beefie Coal (Lothian)
Beenham Grange Gravel
Beenham Grange Gravel Member
Beenham Stocks Gravel
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
Beeston River Terrace Deposits.
Beeston Sand And Gravel
Beeston Sand And Gravel Member
Beeston Terrace
Beetle Bed
Beggar Coal (Midlothian)
Bein Nan Coireag Conglomerate
Beinn A'Chaisteil Quartzite Formation
Beinn A'Ghlo Graphitic Schist
Beinn A'Ghlo Quartzite
Beinn A'Ghlo Quartzite Formation
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
Beinn Bheula Schist Formation
Beinn Bhreac Member
Beinn Bhreac Psammite
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
Beinn Gaire Psammite Formation
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
Beinn Nan Ord Gabbro Ring-Dyke
Beinn Totaig Formation
Beinn Udlaidh Quartzite Formation
Beith Lava Member
Beith Lavas
Belah Dolomite
Beldin Gill Ganister
Beldin Gill Ganister Formation
Beldorney Pelite Formation
Belemnite Beds
Belemnite Marl Member
Belemnite Marls
Belemnite Sands Member
Belemnitiferous And Micaceous Marls (Upper Part)
Belfast Group
Belfast Harbour Evaporite Formation
Belfast Marls Formation
Belfast Marls Member
Belhaven Point Vent
Belhelvie Basic Intrusion
Belhelvie Pluton
Bell Crags Breccia Member
Bell Crags Member
Bell Pit
Bell Pit [Obsolete Code Use DMBP]
Bell's Hill And Howden Burn Group
Bell's Hill And Howden Burn Volcanic Formation
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
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
Bembridge Limestone Formation
Bembridge Marls
Bembridge Marls Member
Bembridge Oyster Beds
Bembridge Raised Beach
Bembridge Raised Beach Member
Ben A Caillich Granite (Skye Eastern Red Hills: Phase 5)
Ben Aian Quartzite
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
Ben Lawers Schist [Obsolete Name And Code: Use BLAS]
Ben Lawers Schist Formation
Ben Ledi Grit Formation
Ben Ledi Grits
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
Ben Suardal Member
Ben Vuirich Pluton
Ben Wyvis Pelite
Ben Wyvis Pelite Formation
Ben Wyvis Pelitic Schist
Ben Wyvis Psammite
Benan Conglomerate Formation
Benarth Grits And Flags
Benbulben Shale Formation
Benburb Group
Benburb Lignite
Benburb Mudstone Member
Bench Coal
Bench Coal (Warwickshire)
Bench Thin Coal (Warwickshire)
Benches Coal (South Staffordshire)
Bencliff Grit
Bencliff Grit Member
Bencliff Grit Series
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
Benscliffe Breccia Member
Benscliffe Breccia Member [Obsolete Code: Use CMBA]
Bensham
Bensham Coal (Northumberland)
Benthall Beds
Benthall Member
Bentinck Coal (Northumberland)
Bentleyford Shales Formation
Benton Series
Benton Volcanic Group
Benton Volcanic Series
Bents Fireclay
Beoch Musselband
Beoil Banded Schist
Beoil Quartzite
Beoil Quartzite Formation
Beoil Schist
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
Berkshire Oolite Series And Osmington Oolite Series
Berllan Beds
Berllan Formation
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
Berry Head Member
Berry Member
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
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: Within PCM]
Betton Beds
Betton Member
Betton Shale Formation
Betton Shale Formation [Duplicate Code: 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
Bewcastle Member
Bewerley Shales
Beyrichoceras Hodderense Bed
Bharradail Phyllite Member
Bheinn Bhreac Member
Bickerton Moraines Formation [Obsolete Name And Code: Use ESKRM]
Biddenham Member
Bidean Nam Bian Andesite Member
Bideford Formation
Bideford Group
Bielby Peat Bed
Bielby Sand Member
Bifidus Beds
Bifidus Shales
Bifidus Slate Formation
Bifidus Slate Formation And Murchisoni Beds [Undifferentiated]
Bifidus Slates
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
Big Vein Coal (South Wales)
Biggar Volcanic Formation
Bigholms Burn Peat Bed
Bighouse Formation
Bighouse Limestone Member
Bighouse Sandstone Formation [Obsolete Name And Code: See BIGH]
Bighouse Sandstone Formation And Lower Part Of Sandside Sandstone Formation
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
Bin Mine Coal
Bin Mountain Sandstone Formation
Bincombe Mudstone Member
Bindon Sandstone Member
Binds Stone (South Staffordshire)
Bingley Bog Formation
Binnein Quartzite
Binnein Quartzite Member
Binnein Schist
Binnein Schist Member
Binnend Limestone
Binnend Sandstone
Binnend Sandstone Member
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
Birk Riggs Formation
Birkby Fell Andesite Member
Birkby Fell Member
Birkdale Limestone
Birkenhead Sandstone Formation
Birker Fell Andesite Formation
Birker Fell Andesite Group
Birkfield Limestone
Birkhill Shale Formation
Birkhill Shales
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
Birstall Member
Birstall Rock
Birstall Sand And Gravel
Birstall Terrace
Birtley Limestone
Bisat Group
Biscathorpe Sand And Gravel
Bishop's Frome Limestone Member
Bishop's Quarry Beds
Bishop's Quarry Limestone Formation [Obsolete Name And Code: Use CFML]
Bishopbriggs Sandstone
Bishopston Formation
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
Black Band Coal (North Staffordshire)
Black Band Coal (South Yorkshire)
Black Band Formation
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
Black Coal (Bristol Area)
Black Coal (South Lancashire)
Black Coal (South Wales)
Black Coal [South Wales Coalfield]
Black Cock Beds
Black Cock Formation
Black Down Sandstone Group
Black Hill Intrusion
Black Hill Laccolith
Black Isle Sandstone Group
Black Law Plug (Greenock)
Black Law Vent And Plug (Jedburgh)
Black Lias
Black Limestone
Black Limestone (Isle Of Man)
Black Limestones And Shales
Black Marl
Black Metal Coal (Cumbria)
Black Metals
Black Metals Marine Band
Black Metals Marine Band [Local Name: See HTMB]
Black Metals Member
Black Mine
Black Mine Coal
Black Mount Group
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
Black Rock Dolomite Formation [Obsolete Name And Code: See BRL]
Black Rock Group [Obsolete Name And Code: Use BRL]
Black Rock Limestone
Black Rock Limestone Formation [Obsolete entry, 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
Black Shales And Conglomerates
Black Shales Of Malvern
Black Shelly Boulder Clay
Black Shelly Till
Black Slate And Chert
Black Slates Of Dolwyddelan [Obsolete Name And Code: Use NOG]
Black Slates Of Skiddaw
Black Stockarton Moor Complex
Black Stockarton Moor Subvolcanic Complex
Black Top Coal
Black Vein Coal (South Wales)
Black Ven Beds
Black Ven Marl Member
Black Ven Marls
Blackband Coal (New Cumnock)
Blackband Coal (South Wales)
Blackband Group
Blackband Lingula Band
Blackband Marine Band
Blackberry Bank Formation
Blackbrook Beds
Blackbrook Formation
Blackbrook Group
Blackbrook Reservoir Formation
Blackbrook Series
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
Blackheath Member
Blackheath Pebble Member
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
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
Blaen-Y-Cwm Shale Formation
Blaen-Y-Glyn Formation
Blaguegate Yard Coal
Blair Atholl Dark Limestone And Dark Schist
Blair Atholl Dark Limestone And Dark Schist Formation
Blair Atholl Series
Blair Atholl Subgroup
Blair Flags And Shales
Blair Hill Tuff Member
Blair Shale Formation
Blair Shales
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
Blakefell "Mudstone"
Blakeney Formation
Blakeney Valleys Formation
Bland Coal (South Lancashire)
Blandford Chalk Member [Obsolete Name And Code: See SECK And NCK]
Blane Water Formation
Blane Water Silt Formation
Blanket bog peat
Blanket head
Blanket Head (Regolith)
Blargie Quartzite Member
Blatchford Sand
Blaven Granite (Srath Na Creitheach Centre)
Blbc Blocking Coal (West Yorkshire)
Blea Wyke Beds
Blea Wyke Sands
Blea Wyke Sandstone Formation
Blea Wyke Series
Bleadon Member
Bleak Down Gravel Member
Bleawath Formation
Bleawath Tuff Formation
Blelham Peat Formation
Blenfire Coal (South Lancashire)
Blenfire Mine
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
Blind Beck Sandstone Member
Blind Cove Member
Blind Cove Sandstone Member
Blind Rock Dyke
Blisco Formation
Blisco Member
Blisco Sandstone Member
Blisworth Clay Formation
Blisworth Clay Member
Blisworth Limestone
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
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
Blue Coal (Somerset)
Blue Flats Ironstone (South Staffordshire)
Blue Lias [Obsolete Code: Use BLI]
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
Blue Marle
Blue Tour Coal (Ayrshire)
Blue Tour Limestone
Blue Wick Sands
Blue-Grey Series
Blues Limestones
Bluntisham Clay
Blyth Coal (Nottingham)
Blyth Member
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
Bodafon Formation
Bodafon Moor Flags
Bodafon Quartzite
Bodeidda And Deganwy Mudstones
Bodeidda Mudstones [Obsolete Name And Code: Use COMU]
Bodeidda-Deganwy Mudstone
Bodelwyn Beds
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
Bofrishlie Burn Sandstone Member
Bofrishlie Slate Formation
Bog iron-ore
Bog Mine Outliers
Bog Quartzite
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
Bognor Rock Bed
Bognor Sand
Bognor Sand Member
Bogside Ironstone And Coal
Bogside Limestone
Bogside Main Coal
Bogside Thick Coal
Boheeshane Chalk Formation
Boheeshane Chalk Member
Bold Formation
Bold Venture Beds
Bolders Bank Formation
Bole Hill Channel
Bole Hill Sandstone
Bollandoceras Hodderense Beds
Bollin Mudstone Formation
Bollin Mudstone Member
Bolsa Member
Bolton Marine Band
Bolton Marine Band [Local Name: Use AGMB]
Bomb Crater
Bonahaven (Bunnahabhain) Dolomite Formation
Bonahaven Dolomite
Bonaly Group [Obsolete Name And Code: Use BNY]
Bonaly Volcanic Formation
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 Code: Use UBO]
Border Group, Upper [Obsolete Name And Code: Use TYLS]
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
Borth Mudstones Formation
Borthwick Sill
Boscastle Formation
Boscastle Measures
Boscombe Sand Formation
Bosies Bank Formation
Bosworth Clay Member
Botany Grit
Botany Limestone
Bothkennar Gravel
Bothkennar Gravel Formation
Bothkennar Gravel Member
Bothwell Bridge Marine Band
Bothyhill Gravels Member
Botney Cut Formation
Bottom Beaumont Coal (Northumberland)
Bottom Bed
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
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
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
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
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
Boulder Clay And Laminated Clay (Alternate Beds)
Boulder Clay Of Lake District Provenance
Boulder Clay With Jurassic Fossils
Boulder Clay, Glacial Till
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
Bournemouth Marine Beds
Bourton Limestone Member
Bovevagh Till [Obsolete Name And Code]
Bovey Beds
Bovey Formation
Bovisand Beds
Bovisand Formation
Bovisand Formation [Obsolete Code: Use BOV]
Bovisand Formation And Staddon Formation (Undifferentiated)
Bow Beds
Bow Breccia Formation
Bow Conglomerates [Obsolete Name And Code: Use BOB]
Bowden Way Beds
Bowden Way Beds And Acuminata Beds (Undifferentiated)
Bowfell Links Member
Bowfell Links Sandstone Member
Bowhills Formation [Obsolete Name And Code: See EN]
Bowhills Member
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 entry, use BSG]
Bowland Shale, Lower
Bowland Shales
Bowling Alley Coal (North Staffordshire)
Bowmore Psammite
Bowmore Sandstone
Bowmore Sandstone Group
Bowsebank Coal (Fife)
Bowsey Wood Formation
Box Law Plug
Boyd's Burn Lava Member
Boyd's Burn Lavas
Boyle Sandstone Formation
Boyn Hill Gravel Formation
Boyn Hill Gravel Member
Boyn Hill Terrace
Boyndie Bay Formation [Obsolete Name And Code: See MCD]
Boyndie Bay Group
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
Brachiopod Beds
Brackaville Coal (Dungannon)
Brackenslack Limestone
Brackish Lagoonal Deposits
Brackish Water Beds
Bracklesham Beds
Bracklesham Beds And Barton Clay (Undifferentiated) [Obsolete Name And Code: See BRBA]
Bracklesham Group
Bracklesham Group [Duplicate Code: Use BRB]
Bracklesham Group And Barton Group (Undifferentiated)
Bracklesham Sand
Bracklesham Sand/Beds
Bracklinn Falls Conglomerate Member
Bradford Beds
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
Bradford Four Foot Mine Coal
Bradford Marine Band
Bradford Marine Band [Local Name: See HTMB]
Bradford Threequarters Coal (South Lancashire)
Bradford Threequarters Mine
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
Braemore Mudstone Formation
Braemore Mudstone Formation And Braemore Sandstone Formation (Undifferentiated)
Braemore Sandstone Formation [Obsolete Name And Code, Use: OA]
Braemore Sandstones
Braich Tu Du Volcanic Formation
Braicklaich Sand Member
Braicklaich Sands Member
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
Brandon Flint Member
Brandon Flint Series
Brandon Grit
Brandon Sandstone Bed
Brandsby Roadstone Member
Brandy Craig Formation
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
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
Brathay Flag Formation
Brathay Flags
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
Breakish Formation
Breaky Bottom Flint
Breakyneck Scar Limestone Formation
Breccia Gravel
Breccia Group
Breccia Of Kenilworth,Lower
Breccia Of Kenilworth,Upper
Breccio-Conglomerate
Breckells Mudstone Formation
Breckells Mudstone Member
Breckells Mudstones
Brecknockshire Drift
Brecknockshire Formation
Brecknockshire Glacigenic Formation
Brecks Coal
Brecon Beacons Group
Brecon Subgroup
Breedon Breccia
Breedon Member
Breighton Cover Sand Formation
Breighton Sand Formation
Brendon Formation
Brendon Hill Beds
Brennand Grit
Brennand Grit Formation (Lancaster District)
Brennand Grits
Brennand Grits Formation [Obsolete entry, use BRNG]
Brennarnd Grit
Brent Formation
Brent Group
Bressay Flagstone Formation
Bressay Flagstones
Bretford Member
Bretford Member, Lower Facet
Bretford Member, Upper Facet
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]
Brewin's Bridge Microgabbro Dyke
Brewood Till Formation
Breydon Formation
Brick Clay
Brickclay
Brickearth
Brickearth And Steyne Wood Clay
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
Bridges Sandstone Formation
Bridgeton Formation
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
Bridport Sand Formation
Bridport Sands
Briele Ground Formation
Brielle Ground Formation
Brierley Coal (West And South Yorkshire)
Brierley Division
Brierley Hill Cluster
Brierley Member
Brierley Rock
Brig Formation
Brig o' Balgownie Conglomerate Formation
Brig O'Balgownie Conglomerate Formation
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
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
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
Brithdir Coal (Lower Leaf) (South Wales)
Brithdir Coal (South Wales)
Brithdir Coal (Upper Leaf) (South Wales)
Brithdir Formation
Brithdir Member
Brithdir Rider Coal (South Wales)
Brithidir Breccia
Brithidir Porphyry
Brithion Formation
Brithion Tuff
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
Brixham Limestone
Brixham Limestone Formation
Broad Law Intrusion
Broad Law Vein
Broad Vein
Broad Vein Formation
Broad Vein Mudstone Formation
Broadearth Fireclay
Broadford Beds (Part)
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
Broadlie Coal
Broadstairs Member
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
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
Bronydd Formation
Bronzite Picrite Dykes Of The Scourie Dyke Swarm
Brooch Coal (South Staffordshire)
Brooch Coal (South Staffordshire) [Obsolete Code: Use BROO]
Brooch Fireclay
Brooch Ironstone
Brook End Sandstone Member
Brook Formation
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
Broome Member
Broomhill Clay Formation
Broomhill Clay Member
Broomhill Formation
Broomhill Main (Northumberland)
Broomhill Main Coal (Northumberland)
Broomhill Member
Broomhouse Formation
Broomhouse Sand And Gravel Formation
Brora Arenaceous And Argillaceous Bed [Obsolete Name And Code: See BRARG And BRARE]
Brora Arenaceous Formation
Brora Arenaceous Series
Brora Arenaceous Series and Upper Part Of Brora Argillaceous Series
Brora Argillaceous Formation
Brora Argillaceous Formation (Upper Part, Fascally Siltstone Member)
Brora Argillaceous Series
Brora Argillaceous Series (Pars)
Brora Argillaceous Series (Upper Part)
Brora Brick Clay Member
Brora Coal
Brora Coal Bed
Brora Coal Formation
Brora Coal Member
Brora Coal, Shales, Shelly Clays and Sandstones, and 'Roof Bed'
Brora Formation
Brora Lower Oolite
Brora Roof Bed
Brora Sandstone Member
Brora Shale Formation
Brora Shale Member
Brotherton (Magnesian Limestone) Formation
Brotherton Beds
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
Browgill Formation
Browgill Member
Browgill Shales [Obsolete Name And Code: Use BRW]
Brown And Grey Sandstone Member
Brown Bank Bed
Brown Bank Formation
Brown Bank Ignimbrite Formation
Brown Bank Tuff Formation
Brown Clay With Stones
Brown Howe Member
Brown Howe Tuff Member
Brown Metal Coal
Brown Rake Coal (Nottingham And Derby)
Brown Sands And Gravels
Brown's Fireclay
Brown's Vein
Brownber Formation
Brownber Pebble Bed
Brownber Pebble Beds [Obsolete Name And Code: Use BNBF]
Brownlow Mudstone [Obsolete Name And Code]
Brownstone Group [Obsolete Name And Code: See BRS]
Brownstones
Brownstones (In Part)
Brownstones Formation
Broxburn Marls
Broxburn Shale
Bruar Psammite Formation
Bruce A
Bruce B
Bruce Sandstone Member
Bruce Upper Sands
Brunachan Psammite Formation
Brunel Beds
Brunel Formation
Brunton Quarry Coal (Northumberland)
Brunton Quarry Sandstone
Brushford Member
Brutach Dearg Member
Bryans Coal (Lothian)
Bryn Beds
Bryn Bedwen Formation [Obsolete Name And Code: Use CER]
Bryn Bedwen Formation [Obsolete Name And Code:Use CER]
Bryn Brith Beds
Bryn Brith Grits
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
Bryn-Glas Mudstones
Bryn-Teg Volcanic Formation
Bryncoch Coal
Bryncoch Coal (South Wales)
Bryncroes Formation
Bryne Formation
Brynloi Coal (South Wales)
Brynrefail Group
Brynwhilach Two-Feet Coal (South Wales)
Bryozoa Band (Ravenstonedale)
Brython Glacigenic Group
Bu Ness Group
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
Buchan Gravels Member
Buchan Ridge Gravel Member
Buchanan Clay Member
Buchanan Formation
Buchlyvie Sandstone Member
Buck Hills Greywacke
Buck Hills Grit
Buck Hills Member
Buckator Formation
Buckbanks Sandstone Member
Buckhaven Planolites Bed
Buckholm Formation
Buckholm Grits
Buckholme Formation
Buckie Beds
Buckie Formation
Buckie Limestone Formation
Bucklandi Clays
Bucklands Clays
Buckle Marls (Five)
Buckle Marls (Four)
Buckle Marls (One)
Buckle Marls (Six)
Buckle Marls (Three)
Buckle Marls (Two)
Bucklebury Common Gravel Member
Bucklebury Gravel
Buckley Fireclay Formation [Obsolete Name And Code: Use ETM]
Buckstone Grit
Buddon Sands
Bude Formation
Bude Formation And Bideford Formation (Undifferentiated)
Bude Sandstones
Budleigh Salterton Conglomerate
Budleigh Salterton Conglomerate And Sandstone
Budleigh Salterton Pebble Bed
Budleigh Salterton Pebble Beds
Budleigh Salterton Pebble Beds Formation [Obsolete Name And Code Use: CHES]
Buff Coal (Bristol Area)
Bught Craig Member
Building Stones
Buildwas Beds
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
Bulkeley Hill Formation
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
Bulldog Coal (South Lancashire)
Buller's Hill Gravel
Buller's Hill Gravel Formation
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
Bullrock Greywacke Formation
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
Bungilow Coal (North Staffordshire)
Bunny Sand And Gravel
Bunter (Undifferentiated) [Obsolete Name And Code]
Bunter Conglomerate Beds
Bunter Pebble Beds [Obsolete Name And Code: Use CHES]
Bunter Sandstone
Bunter Sandstone Formation
Bunter Shale Formation
Bunter Siltstone Member [Obsolete Name And Code]
Burcot Breccia
Burcot Member
Burdiehouse Limestone
Bure Valley Beds
Bure Valley Beds And Weybourne Crag
Bure Valley Formation
Burford Coal Formation [Obsolete entry, use BRFC]
Burford Coal Group
Burford Coal Member
Burghead Beds
Burghead Sandstone
Burghead Sandstone Formation
Burghie Shale Member
Burghy Coal
Burgy Coal (South Lancashire)
Burial Ground
Buried Gravel Layer
Burlington Member
Burn Bridge Arenite
Burn Of Benholm Peat
Burn of Benholm Peat Bed
Burn Of Benholm Peat Member
Burn Of Mar Sandstone Formation
Burn Side Conglomerate Member
Burncrooks Pyroclastic Member
Burncrooks Volcaniclastic Member
Burnfoot Bridge Coal (New Cumnock)
Burnfoot Shales
Burnham Chalk Formation
Burnham Formation
Burnhead Intrusion
Burnhouse Lava Member
Burnhouse Lavas
Burnhousemoor Member
Burning Mount Plug
Burnley Four Feet Coal
Burnley Four Foot Coal (Lancashire)
Burns Beds
Burns Sandstone Member
Burnside Formation
Burnside Intrusion (Plug)
Burnside Sandstone Formation
Burntisland Lavas
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 entry, use BO]
Burrington Oolite Subgroup
Burthel Beds
Burtle Beds
Burtle Formation
Burtle Sands Beds
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
Burwardsley Hill Bed
Burway Formation
Burway Formation [Obsolete Code: Use BUGP]
Burway Group
Bush Coal (Fife)
Bushley Green Member
Bushley Green Terrace
Bushley Green Terrace (Upper Part)
Bushley Green Terrace Deposits
Bushley Green Terrace Deposits (River Severn)
Bushy Coal (South Wales)
Bussell's Member
Bussell's Mudstone Member
Busty Coal (Northumberland And Durham)
Butcombe Sandstone
Butcombe Sandstone Member
Butcombe Sandstone Member [Obsolete Name And Code: Use AS]
Bute Coal (South Wales)
Bute Conglomerate Formation
Bute Limestone
Butt Hill Member
Butterby Member
Butterby Till Member
Buttergask Flagstone Member
Buttergask Formation
Buttergask Member
Butterly Marine Band
Buttermere Formation
Buttermere Formation (Hornfelsed)
Buttershaw Limestone
Butterton - Swynnerton Dykes
Butterton Sandstone
Butterton Sandstone Bed
Butterton Sandstone Member
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
Byley Mudstone Formation And Wych Mudstone Formation (Undifferentiated)
Byley Mudstone Member
Byne Hill Granite
Byne Hill Intrusion
Byth Gravel
Byth Till
Byth Till Formation
Bytham Catchments Subgroup
Bytham Formation
Bytham Sand and Gravel Formation
Bytham Sands And Gravels
Bytham Sands And Gravels Formation
Bytham Sands And Gravels;Unit 2,Shouldham Sands Of Lewis,P.127-130 In Lewis Et Al 1991
C Sands
C-Bed Evaporite
C2 And C2-3 Slate
Caaf Water Limestone Formation
Caban Conglomerate Formation
Caban Conglomerate Formation (Formerly Facies)
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
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
Cadbury Breccia Formation
Cadder Clay Member
Cadder Formation
Cadder Sand And Gravel Formation
Cadder Sand Formation
Caddroun Burn Beds
Cadeby (Magnesian Limestone) Formation
Cadeby Formation
Cadell's Parrot Coal
Cademan Volcanic Breccia Member
Cadgers Loan Rock
Cadgers Loan Sandstone
Cadh'-an-Righ Shale Member
Cadham Craw Coal
Cadham Little Coal
Cadham Main Coal
Cadham Under Coal
Cadnant Shale Formation
Cadnant Shales
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
Caered Flags
Caerfai Bay Shales Formation
Caerfai Beds
Caerfai Formation
Caerfai Group
Caerfai Series
Caergribin Rhyolite Intrusion
Caerhys Shale Formation
Caerketton Group
Caerketton Volcanic Group
Caerketton Volcanic Member
Caernarfon Bay Formation
Caesar's Camp Formation
Caesar's Camp Gravel
Caesar's Camp Gravel (A) [Obsolete Code: Use CCGR]
Caesar's Camp Gravel (B) [Obsolete 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
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
Cairnsmore Of Fleet Pluton
Cairnwell Quartzite Formation
Caister Coal Formation
Caithness Flagstone Group
Caithness Flagstone Series
Caithness Shelly Drift
Caithness Shelly Till
Calcareous Conglomerate Group [Obsolete Name And Code: See EN]
Calcareous Grit
Calcareous Grit, Lower
Calcareous Group (Lower Culm Measures)
Calcareous Sandstone Bed
Calcareous Series, Durness Limestone, Durness Limestone Or Dolomite
Calcareous Shale Member
Calcareous tufa
Calciferous Sandstone
Calciferous Sandstone Measures [Obsolete Name And Code: See SYG]
Calcite Mudstone Group
Calcrete
Caldecote Volcanic Formation
Caldecote Volcanic Series
Calder Mudstone Formation
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
Caledonian Supersuite
Calettwr Quartzite
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
California Till Member
Calke Abbey Sandstone Formation
Callan Group
Callander Craig Conglomerate
Callander Craig Conglomerate Member
Callant Limestone
Callovian And Oxfordian Rocks (Undifferentiated)
Calmstone Coal (Sanquhar)
Calmy Limestone
Calne Freestone And Coral Rag
Calne Sands Formation
Calp Limestone Group
Calp Limestone Of The Calp Or Middle Limestone
Calp Or Middle Series [Obsolete Name And Code]
Calp Sandstone Of The Calp Or Middle Limestone
Calp Shale Of The Calp Or Middle Limestone
Calton Limestone [Obsolete Name And Code: Part Of MI]
Cam Crags Sandstone Member
Cam Spout Tuff
Cam Spout Tuff Member
Cam Valley Formation
Camas Chil Mhalieu Formation
Camas Malag Formation
Camasunary Sandstone Member
Camasunary Siltstone Member
Cambeck Beds
Cambeck Member
Camberley Sand Formation
Cambir Dolerite Sheet-Swarm
Cambois Little Coal (Northumbria)
Cambrian And Ordovician Rocks (Undifferentiated)
Cambrian Quartzite
Cambrian Rocks (Undifferentiated)
Cambridge Bed
Cambridge Greensand [Obsolete Name And Code: See CBG]
Cambridge Greensand Member
Cambriense Marine Band
Cambuslang Marble
Camderry Member
Camlo Hill Group
Camnant Mudstone Formation
Camnant Mudstones Formation
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
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
Canisp Porphyry Sills
Cann Sand Member
Cann Wood Slate Formation
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
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
Caoilte Subsequence
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
Capelaw Basic Volcanic Formation
Capelaw Volcanic Formation
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
Carbonaceous Group
Carboniferous And Permian Rocks (Undifferentiated)
Carboniferous Lavas
Carboniferous Limestone (Series)
Carboniferous Limestone [Obsolete Name And code]
Carboniferous Limestone Series
Carboniferous Limestone Supergroup
Carboniferous Rocks (Undifferentiated)
Carboniferous-Permian Extensional Supersuite
Carbost Conglomerate Member
Cardiaster Beds
Cardiff Group
Cardigan Bay Formation
Carding Mill Grit
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
Careg-Wiber Volcanic Formation
Carewoodrig Vent
Carey Beds
Carey River Basalt Formation
Carey Silt Member
Carganamuck Limestone Formation
Carghidown Beds
Carghidown Formation
Carham Limestone
Carham Limestone Bed
Carham Stone
Carhurlie Coal
Carland Sandstone Member
Carlandcheek Vent
Carlane Sandstone Formation
Carleton Hall Clay Member
Carleton Silt Formation
Carlinden Formation
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
Carluke Coals
Carluke Tower Coal (Central Coalfield)
Carlyle Beds
Carmel Formation
Carmel Group
Carmel Head Gneiss Package
Carmel Member
Carmichael Burn Formation
Carmichael Burn Group
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
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
Carn Llundain Formation
Carn Mairg Quartzite
Carn Mairg Quartzite Formation
Carn Marth Intrusion
Carn Monadh Gravel Formation
Carn Mor Sandstone Member
Carn Odhar Granite Cupolas
Carn Powell Facies
Carn Powell Facies (Of Black Cock Beds)
Carn Powell Member
Carn Teikever Granite
Carn Y Parc Formation [Obsolete Name And Code: Use CEI]
Carn-Y-Parc Formation
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
Carnethy And Hillend Volcanic Formation
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
Carrock Fell Complex
Carrock Fell Complex [Mosedale Division]
Carrock Gabbro-Microgranite Division
Carrock Gabbro-Microgranite Intrusions
Carrock Granophyre
Carrock Series
Carron Basalt Formation
Carron Bridge Lava Member
Carron Bridge Lavas
Carron Formation
Carron Sandstone Formation
Carronrigg Smithy Coal (Drumbowie)
Carscallon Sandstone
Carse Clay
Carse Clay (Undivided)
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
Carstone
Carstone (Isle Of Wight) [Obsolete Name And Code: Use MBSA]
Carstone Formation
Carstone Grit
Carstone Grit Of The Langton Series
Carstone Of The Isle Of Wight
Cartlett Beds
Carvichen Pluton
Carw Formation
Carway Fach Coal (South Wales)
Carway Fawr Coal (South Wales)
Cascade Beds
Cascade Conglomerate Member
Cascade Grits And Conglomerates
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
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
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
Castleford Four Foot Coal
Castlehead Coals
Castlehead Lower Coal
Castlehead Upper Coal
Castleton Limestones [Obsolete Name And Code]
Castletown Formation-Knockrushen Member
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
Caton Shale
Caton Shale Formation
Caton Shale Member
Caton Shales
Catriona Formation
Catriona Sequence
Catsbit Limestone [Obsolete Name And Code: Use GL]
Catshole Vein Coal (Pembrokeshire)
Cattedown Member
Catterline Conglomerate 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
Cautley Volcanic Group (Ingham 1966)
Cautley Volcanic Member
Cave Deposits
Cave Oolite
Cave Oolite [Obsolete Name And Code: See ULL]
Cave Oolite Member
Cave Rock Member
Cavenham Member
Caw Formation
Caw Mill Sandstone
Caw Sandstone Formation
Caw Tuffs
Cawdale Member
Cawdale Tuff Member
Cawdor Group [Obsolete Name And Code: See Revision Data]
Cawdor Limestone [Obsolete Name And Code: Use EYL]
Cawk Cove Member
Cawk Cove Sandstone Member
Cawledge Bend Limestone
Cayton Bay Formation
Cayton Clay Formation
Cayton Clay Formation And Cornbrash Formation (Undifferentiated) [Obsolete Code: Use CBCA]
Cayton Gill Beds
Cayton Gill Shell Bed
Ceardaich Sand And Gravel Formation
Cefn Bryn Shales
Cefn Bryn Shales [Obsolete Name And Code: Use AVO]
Cefn Coch Grit Member
Cefn Coed Marine Band
Cefn Coed Marine Band [Local Name: Use AGMB]
Cefn Einion Formation
Cefn Formation
Cefn Glas Coal (South Wales)
Cefn Goch Grit
Cefn Gwyn Tuff
Cefn Gwyn Tuff Member
Cefn Hir Ashes.
Cefn Hir Member
Cefn Mawr Limestone Formation
Cefn Rock
Cefn-Y-Fedw Sandstone
Cefn-y-fedw Sandstone Formation
Cefn-Y-Fedw Sandstone Group
Cefn-Y-Fedw Series
Cefngarreg Sandstone Formation
Cefnnantmel Member
Cefnyrhendy Oolite Member
Ceinwen And Llanddwyn Spilitic Formation
Ceiriad Formation
Ceiswin Mudstone
Ceiswyn Beds
Ceiswyn Formation
Ceiswyn Formation And Nod Glas Formation (Undifferentiated)
Celtic Palaeogene Minor Intrusion Suite
Celyn Beds
Cemaes Group
Cement Fireclay
Cement-Stone
Cementstone Formation
Cementstone Group
Cementstone Group (A) [Obsolete Name And Code: See INV and BGN; CMNT Offshore]
Cementstone Group (B) [Obsolete Name And Code: See INV and BGN; CMNT Offshore]
Cemetery Beds [Obsolete Name And Code: Part Of KC]
Cemetery Coal (Burnley)
Cemlyn Bay Formation
Cennen Beds
Cennen Formation
Cenomanian And Turonian Rocks (Undifferentiated)
Cenomanian Greensand
Cenomanian Limestone
Cenomanian Sands
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
Central Grampian Glacigenic Group
Central Grampian Glacigenic Subgroup
Central Group
Central Highland Division
Central Highland Migmatite Complex
Central Highland Migmatites
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
Central Wales Drift
Centre 1 (Ardnamurchan Complex)
Centre 1 Cone-Sheet-Swarm
Centre 2 (Ardnamurchan Complex)
Centre 2 Inner Basic Cone-Sheet-Swarm
Centre 2 Outer Basic Cone-Sheet-Swarm
Centre 3 (Ardnamurchan Complex)
Centre 3 Basic Cone-Sheet-Swarm
Centre 3 Layered Gabbro Lopolith
Cephalaspis Sandstone-Cornstone
Cephalopod Bed
Cephalopod Limestone
Cerdic Formation
Cerdic Sand
Cerdic Shore
Ceres Thick Coal
Cerig Formation
Cerrig Brith Formation
Cerrig Gwynion Grits Facies (Caban Conglomerate Formation)
Cerrig Gwynion Grits Member
Cerrigwynion Grits
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]
Chalk Of Morvern
Chalk Of Mull - Morvern [Obsolete Name And Code: See IHEB And GRIB]
Chalk Rock
Chalk Rock Formation
Chalk Rock Member
Chalk Silt
Chalk With Flints (Lower Part)
Chalk With Flints (Upper Part)
Chalk Without Flints
Chalk, Lower (Now Lower Chalk Formation)
Chalk, Middle (Now Middle Chalk Formation)
Chalk, Undivided, Upper (Now Upper Chalk Formation)
Chalkey Coal (North Staffordshire)
Chalky Boulder Clay
Chalky Gravel
Chalky Series
Chalky Siltstone Member
Chalky Till
Chalmerston Coal (Dalmellington, South Ayrshire)
Chama Sand
Chama Sand Formation
Chama Sand Member
Chamber Rock
Champfleurie Shale
Chance Pennystone Marine Band
Chance Pennystone Marine Band [Local Name: Use AGMB]
Changue Formation
Channel-Fill Deposits
Channelbush Coal
Channelbush Limestone
Chanter Member
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
Charles Hill Volcanic Member
Charles Marine Band
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
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
Charnwood Lodge Member
Charnwood Lodge Volcanic Formation
Chase Coals (South Staffordshire)
Chatburn Limestone Formation
Chatburn Limestone Formation And Thornton Limestone Member (Undifferentiated)
Chatburn Limestone Group
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
Cheddar Limestone Formation
Cheddar Limestone Member
Cheddar Oolite Formation
Cheddar Oolite Member
Cheddleton Sandstones
Chee Tor Limestone Member
Chee Tor Rock
Chee Tor Rock Member
Cheese Bay Sill
Cheeveley Coal (Northumberland) [Local Code: Use BPLY]
Cheevely
Chelford Formation
Chelford Sand Formation
Chelsfield Gravel
Chelsfield Gravel Formation
Cheltenham Limestone Member
Cheltenham Sand and Gravel
Cheltenham Sands
Chemical deposits
Chemiss Coal (Fife)
Chemiss Den Marine Bed
Chemnitzia Oolite/Limestones
Cheney Longville Flags
Cheney Longville Formation
Chenier deposits
Chercombe Bridge Limestone Formation
Chert And Black Shale With Sandstone Bands [Within HBS]
Chert Beds
Chert Beds (Of Devon) [Obsolete Name And Code]
Chert Beds (Of Flint) [Obsolete Name And Code]
Chert Beds (Of West Cumberland)
Chert Bodies In Crocaden Sandstone Formation
Chert Formation
Chert Series
Cherty Beds
Cherty Rock Of Stotfield
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
Cheviot Volcanic Series
Chevithorne Breccias [Obsolete Name And Code]
Chick Coal (Bristol Area)
Chicksgrove Limestone Member
Chicksgrove Member
Chief Limestone Group [Obsolete Name And Code: See GSCL And AG]
Chiefswood Vent
Child Okeford Sand Member
Chillesford Beds
Chillesford Church Sand Member
Chillesford Clay
Chillesford Clay Member
Chillesford Member
Chillesford Sand
Chillesford Sand Member
Chilmark Member
Chilmark Oolite Member
Chilton Stone
China Coal (Falkirk; Central Coalfield)
China Coal (Lancashire)
China Mine
China Mine Coal
China Mine Rock
China Rock
Chinastones
Chipping Norton Formation
Chipping Norton Limestone
Chipping Norton Limestone Formation
Chipping Norton Limestone Formation And Rutland Formation (Undifferentiated)
Chirbury Formation
Chirbury Group
Chirbury Series
Chirdon No.1 Coal
Chirdon No.1 Limestone
Chirdon No.2 Coal
Chirdon No.2 Limestone
Chlorite Sands And Sandstones
Chloritic Marl
Chloritic Sands And Sandstones
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
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
Cilan Grits (In Part)
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
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
Clarborough Beds
Clarborough Formation
Clarborough Member
Claret Beds
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
Claughton Flags
Claughton Formation
Claughton Member
Claughton Moor Shales
Claughton Moor Siltstone Member
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
Clava Shelly Till Member [Obsolete Name And Code: Use CUTI]
Clavellata Beds
Clavellata Beds Formation
Clavellata Formation
Claxby Beds [Obsolete Name And Code: Use CI]
Claxby Ironstone
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
Clay With Flints
Clay-with-flints
Clay-With-Flints
Clay-with-flints Formation
Clayband Ironstone Formation
Clayband Ironstone Measures
Clayband Ironstone Member
Claygate Beds
Claygate Member
Claygate Member And London Clay Formation (Undifferentiated)
Clayknowes Coal (Lothian)
Claymore Sandstone Member
Claypole Limestone
Claypole Limestones Bed
Clays-Of-The-Cornbrash
Clayton Marine Band
Clayton Marine Band [Local Name: Use SOMB]
Claywood Ironstone
Cleatham Limestone
Cleatham Limestone Member
Cleaver Bank Formation
Cleaverbank Formation
Clee Formation
Clee Group (See Clee Formation)
Clee Group [Obsolete Name And Code: See WBK]
Clee Hill Microgabbro Sill-swarm
Clee Sandstone Formation
Cleeve Cloud Member
Cleeve Hill Beds
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
Clent Hills Breccia
Clerkhill Appinite Suite
Cleveland - Armathwaite Dyke. Cleveland Dyke On BGS Published Maps
Cleveland Ironstone Formation
Cleveland Ironstone Series
Cleveland Sand Formation
Cleveland, Cockfield And Armathwaite Dyke
Cleveland-Armathwaite-Barassie-Stevenson-Great Cumbrae-Toward Point Dyke
Cleveleys Mudstone Member
Clicker Tor Picrite Intrusion
Cliff Coal (Milford, South Wales)
Cliff End Member
Cliff Member
Cliff Vein
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
Clift Hills Phyllite Group [Obsolete Code: Use CLHI]
Clift Hills Phyllitic 'Group'
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
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
Cloghan Green Beds
Cloghan Hill Limestone Member
Cloghany Limestone Member
Cloghastucan Chalk Formation
Cloghastucan Chalk Member
Clogher Valley Anhydrite [Obsolete Name And Code]
Clogher Valley Formation
Clogherny Member
Clogherny Member [Duplicate Code: 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
Closeburn Limestone Formation
Cloud Hill Dolomite Formation
Cloud Hill Dolostone Formation
Cloud Wood Member
Cloughfin Sponge Bed Member
Cloughton Formation
Clousden Hill Coal (Northumberland)
Clousta Volcanic Member
Clouston Hill Coal
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
Clunch Clay And Shale
Clunch Coal (Coalbrookdale)
Clune Fish Bed
Clunes Complex
Clwyd Group (Knoll Reef)
Clwyd Limestone Group
Clwyd Valley Formation
Clydach Beds
Clydach Halt Member
Clydach Valley Subgroup
Clyde Beds
Clyde Catchments Subgroup
Clyde Clay Formation
Clyde Plateau Lavas
Clyde Plateau Subsuite (Of MCLFS)
Clyde Plateau Subsuite [Of SSDPV]
Clyde Plateau Volcanic Formation
Clyde Plateau Volcanic Group
Clyde Plateau Volcanic Rocks
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
Clypeus Grit And White Oolite
Clypeus Grit Member
Clyst Sands [Obsolete Name And Code: See DAS]
Clyst St Lawrence Formation
Clyth Formation
Clyth Subgroup
Clyth Subgroup (Helman Head Beds) [Obsolete Name And Code: See 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
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
Coal Group, Upper (Durham) [Obsolete Name And Code]
Coal Marker Member
Coal Measures
Coal Measures Group
Coal Measures Group (Scotland)
Coal Measures Group And Warwickshire Group (Undifferentiated)
Coal Measures Supergroup
Coal Measures, Upper (E & W)
Coal Mining
Coal Mosie (Clackmannan)
Coal Pit Formation
Coal Unit
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
Coalypath Coal
Coarse Gravel And Sand
Coastal barrier deposits
Coastal Deposits And Glaciofluvial Deposits
Coastal Deposits Of Banffshire
Coastal zone deposits
Coastguard Station Vent
Coat Walls Mudstone
Coat Walls Mudstone Member [Obsolete Name And Code: See KRM]
Coat Walls Mudstones
Coatbridge Balmoral Coal (Central Coalfield)
Coatbridge Musselband
Coatbridge Musselband Coal (Central Coalfield)
Coatbridge Musselband Ironstone
Coatyards Coal (Northumberland)
Coatyards Limestone
Coatyards Limestone [Duplicate Code: Use CYLM]
Cobble Coal (Cheadle)
Cobden Sandstone
Cobham Common, Foxhills And Easthamstead Members
Cobham Lignite Bed
Cochno Lava Member
Cochno Lavas
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
Cockermouth Lavas Formation
Cockermouth Volcanic Formation
Cockhill Limestone
Cockhill Marine Band
Cockington Beds
Cockleshell Coal
Cockleshell Coal (South Yorkshire And Derbyshire)
Cockleshell Limestone
Cocklett Scar Flags
Cocklett Scar Sandstone
Cocklett Scar Sandstone Member
Cocklett Scar Sandstones Member
Cockley Beck Tuff Member
Cockley How Tuff Member
Cockley Pike Member
Cockley Pike Sandstone Member
Cockloft Coal (South Lancashire)
Cockshead Coal (North Staffordshire)
Codden Hill Beds
Codden Hill Chert
Codden Hill Chert Formation
Codden Hill Group
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
Coldingham Formation
Coldwell Beds
Coldwell Beds And Horton Flags [Obsolete Name And Code: See CDW And HNF]
Coldwell Formation
Coleby Mudstone Formation
Coleby Mudstone Formation (Part)
Coleby Mudstones [Obsolete Name And Code: Use CHAM Or WHM]
Coleby Mudstones Formation
Coleford Formation
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
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
Colwick Member
Comb Coal
Comb Coal (South Yorkshire And Derby)
Combe Deposits
Combe Down Oolite
Combe Down Oolite Member
Combe Downs Member
Combe Formation
Combe Martin Beach Limestone
Combe Martin Slates Member
Combe Member
Combe Mudstone Formation
Combe Shale
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
Combined Cheltenham Sand And Fan Gravel
Combined Oolite Marl And Upper Freestone
Comin Coch Formation
Comley Andesites [Obsolete Name And Code]
Comley Breccia Bed
Comley Limestone Formation
Comley Rocks (Undifferentiated)
Comley Sandstone Group [Obsolete Name And Code: See LCSS And UCSS]
Comley Sandstone Series
Commodore Formation
Common Flat Limestone
Compact Limestones
Complex landslide deposits
Complex Subsided Ground
Compstall Two Feet
Comptoni Bed
Comrie Three Foot Coal
Comrie Two Foot Coal
Con Tom Member
Conachair Granite Pluton
Conan A Sequence
Conan B Sequence
Conan Formation
Conan Sequence
Conan Subsequence
Conchar Formation
Conchar Subsequence
Concretionary Limestone
Concretionary Limestone Formation
Concretionary Limestone Member
Concretionary Sandstone Series
Concretionary Sandstones
Conduit
Conduit Excavation
Coney Weston Sand And Gravel Member
Coneypark Coxrod Coal
Coneypark Lower Drumgray Coal
Confinis Flags
Confinis Flags Formation
Confinis Formation
Confusion Member
Conglass Conglomerate Formation [Obsolete Name: See CGLS And Revisions]
Conglass Sandstone Formation
Congleton Sand
Conglomerate "Series" [Obsolete Name And Code: Use SVG]
Conglomerate And Grit (Uriconian Group) [Obsolete Name And Code: Part Of UO]
Conglomerate Beds
Conglomerate Of Islay-Jura Succession [Obsolete Name And Code]
Conglomerates Of Heavitree
Conglomerates Of Morven
Conglomeratic 'Division' Of Corsewell Group
Congo Coal (Dungannon)
Coniacian To Campanian Rocks (Undifferentiated)
Conisbrough Group
Coniston Grit Formation
Coniston Grits
Coniston Grits And Studfold Sandstone [Obsolete Name And Code]
Coniston Group
Coniston Limestone
Coniston Limestone Formation
Coniston Limestone Group [Obsolete Name And Code: Use DNT]
Coniston Limestone Series
Coniston Subgroup
Conksbury Bridge Basalt
Conksbury Bridge Lava
Conksbury Bridge Lava Member
Connswater Marl Formation
Conrig Formation
Constantine Bay Slate Formation
Contorta Shales
Convoy Group [Obsolete Name And Code]
Conway Rhyolite Formation
Conwy Castle Grit Member
Conwy Mudstones Formation
Conwy Rhyolite Formation
Conwy Valley Formation
Conybeare Group
Conybeare Group [Duplicate Entry: Use CNYB]
Cook Formation
Cook Sub-Unit
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
Copster Green Sandstone
Coquet Valley Formation
Cora-Bheinn Member
Coracle Sandstone Member
Coral Bed
Coral Knoll (In Kirton Cementstones)
Coral Rag
Coral Rag Formation (Southern England)
Coral Rag Member (Cleveland Basin)
Coralea Phyllite Member
Corallian
Corallian Beds
Corallian Beds (Skye)
Corallian Formation
Corallian Formation [Offshore Areas]
Corallian Group
Corallian Limestone
Corallian Rocks
Coralliferous Group
Coralliferous Series
Coralline Crag
Coralline Crag Formation
Coralline Knolls Of Patch-Reef Type
Coralline Limestone
Coralline Oolite
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
Cornbrash
Cornbrash Formation
Cornbrash Formation And Cayton Clay Formation (Undifferentiated)
Cornbrash Formation And Cayton Shale Formation [Undifferentiated]
Cornbrash Limestone Member
Cornbrook Sandstone
Cornbrook Sandstone Formation
Corncockle Sandstone Formation
Cornelly Oolite Formation
Cornet Limestone
Cornstone Beds
Cornstone Beds (Of Inverness, Nairn, Banff)
Cornstone Beds (Of Stirling Area) [Obsolete Name: See KNW]
Cornstone Formation
Cornstone-Bearing Beds
Cornubian Catchments Subgroup
Corodale Gneiss
Coronation Coal (Fife)
Coronea Formation
Corral Coal (Dailly)
Corrennie Intrusion
Corrie Burn Horneblende Schist
Corrie Lava Member
Corrie Lavas
Corrie Limestone
Corrie Sandstone
Corrie Sandstone And Brodick And Lamlash Beds (Undifferentiated)
Corrieyairack Granitic Complex
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
Corse Diamicton Member
Corse Member
Corse Of Balloch Member
Corseclays Sandstone Formation
Corsend Gelifluctate Bed
Corsend Member, Kirkhill Formation
Corsewall (Point) Conglomerate
Corsewall Formation
Corsewall Group
Corsewall Point Conglomerate Member
Corsham Coral Bed
Corsham Limestone Formation
Corsham Member
Corston Coal (Bristol Area)
Corstorphine Sill
Corton Beds
Corton Formation [Duplicate Code: See 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
Corton Till
Corton Till Member
Corton Woods Sand And Gravel Member
Corton Woods Sand And Gravels
Corton Woods Sands And Gravels
Corvanaghan Formation
Corvanaghan Formation [Obsolete Code: Use CORV]
Corvie Group
Corwen Grit
Corwen Grit Member
Coryton Breccias
Cosham Flint
Cosheston Beds
Cosheston Subgroup
Cot Castle Blackband Ironstone
Cot Castle Clayband
Cot Castle Shell Bed
Cotehele Formation
Cotehele Sandstone Formation [Obsolete Name And Code: Use SME]
Cotes Bottom Flint
Cotgrave Place Skerry
Cotgrave Sandstone Member
Cotgrave Skerry
Cotgrave Skerry (Member)
Cotgrave Skerry Member
Cothall Limestone Member
Cotham Beds
Cotham Member
Cotham Member And Westbury Formation (Undifferentiated) [Obsolete: Use WBCT]
Cotswold Sands
Cotswold Slates
Cotteswold Sands [Obsolete Name And Code: Use BDS]
Cottonshope Basalts
Cottonshope Lavas
Cottonshope Volcanic Formation
Coulins Burn Striped Member
Coull Grit Formation
Counter Head Formation
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
Coventry Sandstone (Middle Part)
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
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
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
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
Crackers Mine
Crackington Formation
Crackington Formation (Pars)
Crackington Formation And Bude Formation (Undifferentiated)
Crackington Measures
Cracoe Limestone Formation
Cradley Silts Bed
Cradley Valley Formation
Crafnant Volcanic Group [Obsolete Name And Code: See SV]
Crag
Crag Group
Crag Group And Bytham Sand And Gravel Formation (Undifferentiated)
Crag Hill Beds
Crag Hill Limestone
Crag Hill Limestone Member
Crag Limestone
Craghouse Tuff Member
Craghouse Tuffs Member
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
Craig Y Lam Group
Craig Y Llam Formation
Craig Y Llam Group
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
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
Craigenbush Limestone
Craigenglen Beds
Craigenhill Limestone
Craigentimpin Lava Member
Craigentimpin Lavas
Craighall Conglomerate Formation
Craighead Limestone
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
Craigmaddie Sandstone Formation
Craigmaddie Sandstones
Craigmalloch Formation
Craigmark Blackband Ironstone
Craigmuschat Sill
Craignish Phyllite
Craignish Phyllite Formation
Craignook Coals (Midgeholm)
Craignook Sandstone
Craigrory Sandstone Bed
Craigs Breccia
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
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
Crawfordston Coal (Ayrshire)
Crawley Formation
Crawley Member
Crawshaw Sandstone
Crawstone Coal (Coalbrookdale)
Crawton Group [Obsolete Name And Code: See Dunnottar-Crawton Group]
Crawton Volcanic Formation
Crayford Brickearth
Crayford Brickearth Formation
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
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
Creag Mhor Conglomerates (Formation)
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
Creagan Loisgte Member
Crease Limestone [Obsolete Name And Code: Use GUO]
Crease Limestone And Whitehead Limestone (Undifferentiated)
Crease Limestone Formation
Crediton Beds
Crediton Breccia Formation
Crediton Breccias [Obsolete Code: Use CRBR]
Crediton Conglomerates
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
Creggan Moar Mudstone Formation
Creigiau Brithion Formation
Crendon Sand
Creran Bridge Quartzite Formation
Creran Flags Formation
Cressbrook Dale Lava
Cressbrook Dale Lava Member
Cretaceous Rocks
Cretaceous Rocks (Undifferentiated)
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
Crickley Member
Crickmail Limestone [Obsolete Name And Code: Use OHL]
Crieve Hill Oolite [Obsolete Name And Code]
Criffel Granite, Criffel And Dalbeattie (Granite) Mass
Criffel-Dalbeattie Granodiorite Complex
Criffel-Dalbeattie Pluton
Crigglestone Rock
Crinan Grit
Crinan Grit Formation
Crinan Grits
Crinan Subgroup
Crinan Subgroup And Tayvallich Subgroup (Undifferentiated)
Crinan Subgroup Caenlochan Schist
Cringate Interbasaltic Beds
Cringate Volcaniclastic Member
Criniod Grit
Crinkle Member
Crinkle Tuff Member
Crinkle Tuffs
Crinoid Bed
Crinoid Grit Member
Croaghgarrow Formation
Croaghubrid Dark Schists
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
Crofts End Marine Band [Local Name: Use AGMB]
Crogenen Slates
Croisaphuill Formation
Croisaphuill Group
Crom Psammite Formation
Cromar Pluton
Cromarty Fish Bed
Cromarty Sand Member
Cromarty Sandstone Member
Cromdale Hills Quartzite Member
Cromer Diamicton
Cromer Forest Bed Series
Cromer Forest-bed Formation
Cromer Knoll Group
Cromer Member
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
Cromlix Mudstone Formation
Cromlox Mudstone Formation
Cronk Sumark Slate
Cropper Gate Rock
Cropthorne Member
Cropthorne Sand and Gravel Member
Cropthorne Terrace Deposits
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
Cross Lane Limestones Bed
Cross Slieve Group
Cross-Bedded Quartzite
Cross-Bedded Series
Crossbasket Ironstones
Crossbrae Farm Peat Bed
Crossbrae Gelifluctate
Crossbrae Gelifluctate Bed
Crossbrae Head
Crossbrae Member
Crossbrae Member, Kirkhill Formation
Crossbrae Peat
Crossbrae Till Formation
Crossdale Grit
Crossdale Mudstone
Crossdale Mudstone Formation
Crossdale Shales
Crossgates Sandstone
Crosshouse Sill
Crossi Bed [Obsolete Name And Code]
Crosskirk Bay Formation
Crosskirk Flagstone Formation
Crossopodia Shales
Crosspodia Shales And Penkill Flags
Crossridge Formation
Crosswood Ash
Croughton Member
Crousa Down Gravel Beds
Crousa Gravels
Crovie Conglomerate
Crovie Group
Crovie Sandstone
Crovie Sandstone Group
Crovie Till Formation
Crow Cherts
Crow Coal (A)
Crow Coal (B)
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
Crug Limestone
Crugan Mudstone Formation
Crugan Mudstones
Cruiser Formation
Crumbouke Coal (South Lancashire)
Crumbouke Mine
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
Cuckfield Stone Bed
Cuckfield Stone Member
Cucklington Oolite
Cucklington Oolite Member
Cuckmere Beds
Cuckmere Flint
Cuckmere Valley Formation
Cuckoo Coal (Bristol Area)
Cudworth Coal (Yorkshire)
Cuil Bay Slate Formation
Cuil Bay Slates
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
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
Culm Group
Culm Measures
Culm Measures And Upper Devonian Slates
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
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
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
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
Cwm Clwyd Tuff Formation
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
Cwm Mawr Coal (South Wales)
Cwm Yr Aethnen Mudstones
Cwm Yr Aethnen Mudstones Formation
Cwm Yr Aethnen Shales
Cwm-Amliw Group
Cwm-Amliw Series
Cwm-Amliw Tuff Formation
Cwm-Yr-Eglwys Formation
Cwm-Yr-Hob Member
Cwmbarn Member
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
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
Cymerig Limestone Member
Cyrena Limestones
Cyrtograptus Grayi Mudstones [Obsolete Name And Code: Use LAU]
Cystoid Limestone
Cystoid Limestone Member
D-Bed Evaporite
D2 Limestones
Dab Limestone Unit
Dabchick Coal (Somerset)
Dacite Group
Daddyhole Limestone
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
Dailly Subgroup
Dailly Wee Coal
Dalby Group
Dalcharn Biogenic Formation
Dalcharn Biogenic Member
Dalcharn Cryoturbate Member
Dalcharn Gravel Formation
Dalcharn Lower Till Formation
Dalcharn Palaeosol Formation
Dalcharn Upper Till Formation
Dale Head Breccia Member
Dale Head Member
Dales Voe Grit [Obsolete Code: Use DAVO]
Dales Voe Grit Formation
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
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
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
Dalton Formation
Dalton Limestone (Northumberland)
Dalton Rock
Daltulich Psammite Formation
Daltulich Semipelite Formation
Dalvrecht Slate Formation
Dalzell Works Lingula Band
Dam House Bridge Tuff Member
Dam Or Barrage
Damery Beds
Dandy Coal
Dandy Coal (Lancashire)
Dandy Mine
Dandy Mine Coal
Dandy Rock
Dane Hills Sandstone Group
Dane Hills Sandstone Member
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
Dark Grey Mudstone Member
Dark Grey Mudstone Member [Obsolete Name And Code: See MSW]
Dark Group
Dark Group Of Blair Atholl Series
Dark Limestone
Dark Limestone And Dark Schist Within Blair Atholl Subgroup
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 Code: Use DART]
Dart Formation [Obsolete Entry: Use DART]
Dart Schists
Dartford Silt
Dartford Silt Member
Dartington Limestone Member
Dartmoor Granite
Dartmoor Intrusion
Dartmouth Beds
Dartmouth Group
Dartmouth Group [Obsolete Name And Code: Use DRTM]
Dartmouth Slates [Obsolete Name And Code]
Dartry Limestone Formation
Darvel Lava Member
Darvel Lavas
Darwen Flags
Darwin Formation
Dash Picrite [Obsolete Name And Code]
Dasses Sill
Daugh Coal (Sanquhar)
Daugleddau Group
Dava Subgroup
Dava Succession
David's Hole Beds
David's Stone Limestone
Daviot Conglomerate Formation
Davy Coal
Dawlish Sands
Dawlish Sandstone
Dawlish Sandstone Formation
Dawlish Sandstones
Dawlish Sandstones And Breccias
Dayia Beds
Daylesford Member
Ddolhir Beds [Originally Dolhir]
Ddugaled Coal (South Wales)
Ddwyryd Shales
Dean Coal (Durham)
Deanshillock Gravel Formation
Dearcaige Quartzite Member
Dearg Member
Dearg Till Formation
Debris Cone [Obsolete Name: 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
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
Degnish Limestone Formation
Delabole Member
Delabole Slates
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
Den Siltstone Member
Denbigh Grits (Now Formation)
Denbigh Grits Formation
Denbigh Grits Group [Obsolete Code And Rank: See DG]
Denbigh(shire) Grits
Denbighshire Grits And Shales
Denbury Crinoidal Limestone
Denbury Crinoidal Limestone Formation
Denend Gravel Formation
Denend Member
Denham Valley Terrace
Denham Valley Terrace Deposits
Denny Lower Blackband Ironstone
Denny Muir Lava Member
Denny Muir Lavas
Denny Upper Blackband Ironstone
Dennyloanhead Ball Coal
Denstone Formation [Obsolete Name And Code: Use TPSF]
Dent Group
Denton Mill Limestone
Derbyhaven Beds
Derbyhaven Formation
Derenenach Mudstone Formation
Derfel Limestone Member
Dergvone Shale Formation
Deri Beds
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
Derryloran Grits
Derryvale Sandstone [Obsolete Name And Code]
Derryvree Till [Obsolete Name And Code]
Dersingham Beds
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
Devil's Chimney Oolite And Cleeve Hill Oolite
Devil's Chimney Oolite And Fiddler's Elbow Limestone
Devil's Hole Sandstone Member
Devoke Water Greisen
Devoke Water Member
Devoke Water Tuff Member
Devon Red Sandstone
Devonian And Carboniferous Rocks (Undifferentiated)
Devonian Fintona Group
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
Dicky Hare Member
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
Didymograptus Superstes Mudstones
Diebidale Pelite Formation
Digg Siltstone Member
Dilhorne Coal (Cheadle)
Dilhorne Coal (Derbyshire)
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
Dinas Bran Formation
Dinas Bran Group
Dinas Dolerite
Dinas Island Formation
Dingle Beds
Dingle Beds (Lower Old Red Sandstone)
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
Diseworth Sandstone
Dissolution Mining
Distinkhorn Dyke Swarm
Distinkhorn Pluton
Disturbed Blackheath Beds
Disturbed ground
Ditcheat Clay Member
Dittisham Member
Ditton Group
Ditton Marine Band
Ditton Marine Band [Local Name: See BJMB]
Ditton Subgroup
Diver Coal
Division 3 (Sandy Clays)
Division 4 (Sands With Chert And Ironstone)
Division A3 of King (1981)
Division B and the lower part of Division C of King, 1981
Division D
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
Doddiscombe Formation
Doddiscombe Formation And Codden Hill Chert Formation (Undifferentiated)
Dodington Ash Rock Member
Dodman Formation
Dodman Phyllites
Dodman Series
Dodman Series/Dodman Phyllites
Doe Coal (South Lancashire)
Doe Mine
Doe Mine Coal
Doethie Formation
Dog Crag Tuff Member
Dog Falls Psammite Formation
Dogger
Dogger Bank Formation
Dogger Formation
Dogger Formation and Saltwick Formation (Undifferentiated)
Dogger Formation, Saltwick Formation, Eller Beck Formation and Cloughton Formation (Undifferentiated)
Dogger Ironstone
Doggy Coal
Doghole Coal (South Lancashire)
Doghole Mine Rock
Doghole Rock
Dol-Cyn-Afon Formation
Dol-Cyn-Afon Member
Doldowlod Conglomerate Member
Dolfawr Mudstones Formation
Dolgarrog Volcanic Formation
Dolgau Mudstone Formation
Dolgau Mudstones
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
Dolgelly Beds [Obsolete Name And Code: Use DLU]
Dolhir Beds
Dolhir Formation
Doll Member
Dollis Hill Gravel Formation
Dollis Hill Gravel Member
Dolomite Beds (Of Appin) [Not Appin Dolomite] [Obsolete Name And Code]
Dolomitic Beds
Dolomitic Conglomerate [Obsolete Name And Code: See MMMF]
Dolomitic Conglomerate And Red Marl [Obsolete Name And Code: See MMMF]
Dolphinholme Mudstone
Dolphinholme Mudstone Formation
Dolwen Formation
Dolwen Grits
Dolwen Mudstones [Obsolete Name And Code: Use BMM]
Dolwen Mudstones Formation
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
Doobally Sandstone Member
Doolie Ness Conglomerate Formation
Doolie Ness Conglomerate Member
Doon Dyke Swarm
Doon Hill Conglomerate
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
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
Doularg Formation
Doulting Beds
Dounalt Limestone Formation
Dounans Limestone
Dounans Limestone Formation
Dounreay Shore Formation
Dounreay Siltstone Member
Doup Crag Tuff Member
Doupster Oil Shale
Dove Crag Member
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
Dowhills Mudstone Formation
Dowlais Limestone
Dowlais Limestone Formation
Down Cliff Clay
Down Cliff Clay Member
Down Cliff Sand Member
Down Cliff Sand Member And Thorncombe Sand Member (Undifferentiated)
Down Cliff Sands
Down Cliffs Clay
Down Hill Marine Band [Local Name: Use CAMB]
Downan Point Lava Formation
Downend Formation
Downend Formation And Mangotsfield Formation (Undifferentiated)
Downend Group
Downend Member
Downend Member And Mangotsfield Member (Undifferentiated)
Downholland Silt
Downie Point Conglomerate
Downie Point Conglomerate Formation
Downie Point Conglomerate Member
Downie's Loup Sandstone Formation [Obsolete Name: Use CYD]
Downies Loup Sandstones (Stirling)
Downton Castle Sandstone Formation
Downton Castle Sandstone Formation And Temeside Mudstone Formation (Undifferentiated)
Downton Castle Sandstone Group
Downton Farm Gravel Member
Downton Marls [Obsolete Name And Code]
Downton Series
Downton Subgroup
Downtonian Red Marl
Downtonian Sandstone Including Quartzite-Conglomerate
Downwash Gravel
Dowra Sandstone Member
Dowsing Dolomite Formation
Dowsing Formation
Dowsing Formation And Dudgeon Formation
Doxall Coal (Bristol Area)
Doyle Gneiss
Drake Formation
Drake Sub-Unit
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
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
Droitwich Halite Member
Dromore Sandstone Member
Dronach Shale Member
Dropping Craig Bed
Dropping Craig Formation
Drosgol Beds
Drosgol Formation
Drosgol Grits
Drosgol Group
Dross Coal
Drowsell Coal (North Wales)
Druid Conglomerate
Druid Conglomerate Member
Druid Conglomerates
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
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
Drumlish Conglomerate Formation
Drumlish Formation
Drumlithie Sand And Gravel Formation
Drumman More Sandstone Formation
Drummangarvagh Member
Drummock Beds
Drummock Group
Drummore Gravel Formation
Drummore Gravel Member
Drummournie Biogenic Member
Drummuck Subgroup
Drummuir Calcareous Member
Drumnessie Lava Member
Drumnessie Lavas
Drumochter Succession
Drumocter Succession
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
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
Dryden Flags
Dryden Flags Formation
Dryden Formation
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
Dubh Loch Member
Duchray Hill Gneiss [Obsolete Name And Code: Use DHGN]
Duchray Hill Gneiss Member
Dud Sandstone
Duddo Limestone
Duddon Bridge Tuff Member
Duddon Bridge Tuffs
Duddon Conglomerate Member
Duddon Hall Tuff Formation
Duddon Hall Tuffs
Dudgeon Formation
Dudgeon Saliferous Formation
Dudley Basaltic Sill-and-vent-swarm
Dudley Limestone [Obsolete Name And Code]
Dufftown Limestone Member
Dufton Shale Formation
Dug Head Sandstone Member
Duke Coal (Rothbury Area) [Obsolete Name And Code: Use BRMN]
Duke Coal (South Wales)
Dukinfield Marine Band
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
Dulas Limestone Formation [Obsolete Name And Code: Use LEEL]
Dulcey Dock Member
Dull Coal (West Yorkshire)
Dullan Member
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
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
Dunbeath Till Formation
Dunblane Formation
Dunblane Member
Dunblane Sandstone Member
Dunchideock Volcanics [Obsolete Name And Code]
Dunconnel Hill Plug
Dundarg Castle Conglomerate
Dundarg Conglomeratic Sandstone Formation [Obsolete Name And Code: See DDG]
Dundarg Sandstone Formation
Dundary Castle Sandstone Formation
Dundee Flagstone Formation
Dundee Formation
Dundonald Sill
Dundry Freestone
Dune Sandstone
Duneaton Volcanic Formation
Dunfallandy Hill Pluton
Dunfermline Splint Coal (Fife)
Dunfermline Under Coal (Fife)
Dungavel Group
Dungavel Hill Conglomerate Member
Dungeon Ghyll Member
Dungeon Ghyll Sandstone Member
Dungiven Formation
Dungiven Formation (A) [Obsolete Code: Use DUNN]
Dungiven Formation (B) [Obsolete Code: Use DUNN]
Dungiven Formation [Obsolete Code: Use DUNN]
Dungiven Limestone
Dunglass Coal
Dungoil Linear Vent-System
Dungy Drift
Dungy Drift Coal (Somerset)
Dungy Head And Dancing Ledge Members (Isle Of Purbeck)
Dunion Hill Plug
Dunkeld Grit
Dunkpool Limestone
Dunlin Group
Dunlin Shale Member
Dunlin Shale Unit
Dunlin Silt Unit
Dunlin Siltstone Member
Dunnage Copse Gravel Member
Dunnerdale Formation
Dunnerdale Sandstone Formation
Dunnerdale Tuffs
Dunnet Head Sandstone Formation
Dunnet Head Sandstone Group
Dunnet Marls
Dunnet Sandstone
Dunnet Sandstone Group
Dunnet Shale
Dunnet Shell Bed
Dunnottar And Crawton Groups [Undifferentiated]
Dunnottar Castle Conglomerate Formation
Dunnottar Castle Formation
Dunnottar Conglomerate
Dunnottar Group [Obsolete Name And Code: See Dunnottar-Crawton Group]
Dunnottar-Crawton Group
Dunoon Phyllite
Dunoon Phyllite Formation
Dunphail Semipelite Formation
Dunrobin Bay Formation [See Also DUNR]
Dunrobin Bay Group [See Also DRB]
Dunrobin Beds
Dunrobin Castle Member
Dunrobin Pier Conglomerate Member
Dunrossness Phyllite
Dunrossness Phyllitic Formation
Dunrossness Phyllitic Formation [Obsolete Code: Use DUPH]
Dunrossness Phyllitic Group
Dunrossness Spilitic Formation
Dunrossness Spilitic Group
Dunscombe Mudstone Formation [Obsolete Name And Code: See AS and 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
Dura Den Member
Durbog Coal (North Wales)
Dure Clough Sandstone
Dure Clough Sandstones Member
Durham Complex
Durham Fissure Fillings
Durham Low Main Coal (Northumberland And Durham)
Durham Low Main Post Sandstone
Durham Lower Till
Durham Lower Till (Boulder Clay)
Durham Member
Durham Upper Till
Duricrust
Durine Formation
Durine Group
Durisdeer Formation
Durley Sand Member
Durlston Beds [Obsolete Name And Code: Use DURN]
Durlston Formation
Durn Hill Quartzite
Durn Hill Quartzite Formation
Durness Group
Durness Limestone Or Eriboll Limestone
Durness Or Eriboll Series
Durnhill Quartzite
Dutch Classification System [Root term only]
Dwfor Mudstone Formation
Dwyfach Formation
Dyehouse Coal (South Lanacashire)
Dyffryn Flags
Dyffryn Flags Facies
Dyffryn Flags Facies (Caban Conglomerate Formation)
Dyffryn Flags Facies Formation
Dyffryn Mymbyr Tuff Member
Dykebar Coal
Dykebar Limestone
Dykebar Marine Band
Dykebar Marls
Dykeneuk Limestone
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)
Dyrham Siltstone Formation
Dysart Main Coal (Fife)
Dysart Musselband
Dyserth Limestone Group (Knoll-Reef)
Dyserth Limestone Group [Obsolete Name And Code: Use CLWYD]
Dyserth Quarry Limestone
Eagle Crag Member
Eagle Crag Sandstone Member
Eagle Crag Tuffs And Honister Slates
Eagle Moor Member
Eagle Moor Sand And Gravel
Eagle Moor Sand and Gravel Member
Eagle Sandstone
Eaglesham Lava Member
Eaglesham Lavas
Earl David's Parrot Coal (Fife)
Earlswood Till
Early Cambrian Rocks (Undifferentiated)
Early Permian Dyke (Within MCPAD)
Early Permian Intrusion (Within MCPAI)
Earn Gravel
Earnley "Division"
Earnley 'Division'
Earnley Formation
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
Easdale Slate Formation
Easdale Subgroup
Easebourne Member
Easington Formation
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
East Grampian Glacigenic Group
East Grampian Glacigenic Subgroup
East Grange Till Member
East Greenland Province
East Harbour Formation
East Kilbride Common Coal
East Kirkton Limestone
East Leys Member
East Leys Till
East Linton Lava Member
East Linton Member
East Lothian Basanite And Foiditic Plugs And Vents
East Lothian Subsuite (Of MCLFS)
East Ogwell Limestone
East Ogwell Limestone Formation
East Stayvoyage Vein
East Thelma Member
East Wear Bay And Abbots Cliff Formations
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
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
Ecton Limestones Formation (Knoll-Reef)
Ecton Member
Edale Shale Group [Obsolete Name And Code: Use BSG]
Edale Shales
Eday Beds
Eday Flags
Eday Flagstone Formation
Eday Group
Eday Lavas [Obsolete Name And Code: Use DSV]
Eday Marl
Eday Marl Formation
Eday Sandstones
Eday Volcanic Rocks
Eday Volcanics
Edder Acres Formation [Obsolete Name]
Edderton Fish Bed
Eddystone Gneiss
Eden Member
Eden Member of Penrith Fm of Bowen et al. (1999)
Eden Shales Formation
Edendork Coal
Edenside Till Formation
Edenvale Beds [Obsolete Name And Code]
Edergole Formation
Edergole Sandstone
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
Edgton Limestone Member
Edinburgh Castle Plug
Edlington Formation
Edmondia Coal (Nottingham)
Edmondia Marine Band
Edmondia Punctatella Bed
Edwalton Formation
Edwalton Member
Edzell Mudstone Formation [Obsolete Name And Code: See CXF]
Edzell Mudstones
Edzell Sandstone Formation [Obsolete Code: Use THF]
Edzell Sandstones
Eelwell Limestone
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
Egedale Slate Formation
Eggardon Chert Beds
Eggardon Grit
Eggardon Grit Member
Eggesford-Type Culm
Egginton Common Member
Egginton Common Sand And Gravel
Egginton Common Sand and Gravel Member
Eglinton Member
Eglinton Shelly Till Member
Eglish Sandstone Formation
Eglwys Rhobell Formation
Eglwyseg Limestone
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
Eight-Yard Limestone
Eighteen Inch Coal
Eighteen Inch Coal (Cumbria)
Eighteen Inch Coal (South Wales)
Eil-Arkaig Dyke Swarm
Eilde Flags
Eilde Flags Formation
Eilde Quartzite
Eilde Quartzite Member
Eilde Schist
Eilde Schist Member
Eilde, Binnein And Glen Coe Quartzites
Eildon Hills Laccolith
Eilean A'Bhaird Member
Eilean Dubh Formation
Eilean Dubh Formation And Ghrudaidh Formation (Undifferentiated)
Eilean Dubh Group
Eilean Liath Grit Formation
Eilean Shona Neck
Eilean Siar Glacigenic Group
Eileans Sandstone Member
Ekofisk Formation
Elbow Deposits
Elbow Formation
Eldersfield Formation
Eldersfield Mudstone Formation [Obsolete Name And Code: Use SIM]
Eldroth Grit
Eldroth Grit Formation
Element Of Kirkhill Upper Till
Elenid Formation
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
Ellen Seam
Ellenora Coal (Douglas)
Ellens Geo Conglomerate
Ellenthorpe Gill Limestone
Eller Beck Bed
Eller Beck Formation
Ellerbeck Formation
Ellergill Beds
Ellerick Formation
Ellerker Limestone
Ellerker Limestone Member
Ellery Syke Limestone
Ellon Formation
Ellwand Slate
Elmsall Coal (West Yorkshire)
Elrick Psammite And Semipelite Formation
Elsham Sandstone Formation
Elsham Sandstone Member
Elspeth Formation
Elspeth Sequence
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
Elsworth Rock Formation
Elsworth Rock Group
Elsworth Rock Series
Elsworth Series
Elton Beds [Obsolete Name And Code: Use ELT]
Elton Formation
Elton Group
Elvans
Elveden Formation
Elvington Glacial Lake Formation
Elvington Glaciolacustrine Formation
Elwick Member
Elwick Moraine Member
Elwy Formation
Elwy Group
Elygrain Vent
Ember Lane Basaltic Pyroclastic-Breccia Vent
Embleton Diorite
Embleton Microdiorite Intrusions
Embsay Limestone
Embsay Limestone Member
Embury Shale
Emerald Formation
Emerald Sandstone
Emley Rock
Endrick Formation
Endrick Sand Member
Enfield Silt Formation
Enfield Silt Member
Engan Spilitic Formation
Engineered Embankment (Undivided)
Engineered Excavation (Undivided)
Engineering Excavation (Tunnelling)
Enler Group
Ennerdale Granite
Ennerdale Granophyre
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
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
Equates With Meadow House Clay Member
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
Ercall Granophyre
Eriboll Formation
Eriboll Group
Eriboll Sandstone Formation
Eriboll Sandstone Group
Eriksson Formation
Eriksson Member
Erins Quartzite
Erins Quartzite Formation
Eriswell Member
Erlend Acid-Intermediate Intrusives
Erlend Basalts
Erlend Silicic Intrusives
Ernan-Glass Metabasic Swarm
Errington Member
Errol Beds
Errol Clay Formation
Errol Member
Erskine Clay Member
Erskine Formation
Erwan Fach Formation
Eryri Formation
Eryry Glacigenic Formation
Escarpment Member
Escrick Moraine
Escrick Moraine Member
Esha Ness Sedimentary Rocks
Esha Ness Volcanic Formation
Esk Evaporite Formation
Esk Evaporite Member
Esk Pike Formation
Esk Pike Hornstone
Esk Pike Sandstone Formation
Eskbank Wood Formation
Eskdale Granodiorite
Eskdale Group [Obsolete Name And Code: See ZG]
Eskdale Intrusion
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
Eskdalemuir Dyke
Eskdalemuir Formation
Esker
Esker deposits
Eskett Limestone Formation
Eskmouth Extra Coal
Essex White Ballast
Essie Till Formation
Estheria Shales
Estheria Shales Plus Mytilus Shales
Estuarine "Series" [Obsolete Name And Code]
Estuarine Alluvium [Obsolete Name And Code: Use TFD]
Estuarine Alluvium And Higher Estuarine Alluvium
Estuarine Limestones
Estuarine Series
Etive Dyke Swarm
Etive Formation
Etive Pluton
Etive Plutonic Complex
Etive Rhyolite Member
Etive Sub-Unit
Etruria Formation
Etruria Formation, Halesowen Formation And Salop Formation (Undifferentiated)
Etruria Marl
Etruria Marl Formation
Etruria Marl Series
Ettrick Group
Ettrick Sandstone
Ettrickbridge Formation
Etwall Member
Etwall Sand and Gravel
Etwall Sand and Gravel Member
Eumorphoceras Bisulcatum Marine Band
Eumorphoceras Ferrimontanum Marine Band
Eumorphoceras Ferrimontanum Marine Band [Obsolete Code: Use E2A2]
Eumorphoceras Pseudobilingue Marine Band
Eumorphoceras Yatesae Marine Band
Eumorphoceras Yatesae Marine Band [Obsolete Code: Use E2A3]
Eureka Coal (South Derbyshire)
Ewingston Sill
Excavata Beds
Exceat Flint
Excelsior Coal (Leicestershire)
Exe Breccia
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
Exmoor Group
Exmouth Beds
Exmouth Formation
Exmouth Mudstone and Sandstone Formation
Exmouth Mudstone And Sandstone Member
Exmouth Sandstone And Mudstone
Exmouth Sandstone And Mudstone Formation [Obsolete Name And Code: Use EMSA]
Exmouth Sandstones
Exmouth Sandstones And Mudstones
Exogyra Nana Beds
Exogyra Nana Clay
Exogyra Nana Zone
Extensus Flags
Eyam Group [Obsolete Name And Code: See EYL]
Eyam Limestone Formation
Eyam Limestones Formation
Eyam Limestones Formation (Flat-Reef)
Eyam Limestones Formation (Knoll-Reef)
Eycott Group
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
Eymore Farm Marine Band
Eymore Farm Marine Band [Local Name: Use AGMB]
Eynort Mudstone Formation
Eynsham Gravel and Stanton Harcourt Gravel
Eype Clay
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
Fairbottom Mine Coal
Fairlie Sandstone Formation
Fairlight Clays
Fairmilehead Volcanic Member
Fairmilehead, Braids And Blackford
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
False Bedded Grit
False Bedded Limestone
False Bedded Quartzite, Lower Quartzite
False Ell Coal (Derby)
False-Bedded Quartzite Formation
False-Bedded Quartzite Member
False-Bedded Quartzite Member [Obsolete Name And Code: Use BAQ]
Fan Gravel
Fanad Pluton
Fankerton Limestone
Fanogle Sandstone
Far House Member
Faraday House Shell Bed Marine Band
Faraday Road Member
Farclas Sand Member
Farden Member
Farewell Rock [Obsolete Name]
Farigaig Formation
Faringdon Sand Formation
Faringdon Sponge Gravel Member
Faringdon Sponge Gravels
Farley Member
Farlington Marls (One)
Farlington Marls (Two)
Farlough Coal
Farlow Group
Farlow Sandstone Formation
Farlow Sandstone Group
Farlow Series
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
Faroes Province
Farragon Beds
Farragon Beds [Obsolete Name And Code: Use FAVO]
Farragon Volcanic Formation
Farrington Formation
Farrington Formation And Barren Red Formation (Undifferentiated)
Farrington Formation, Barren Red Formation, Radstock Formation And Publow Formation
Farrington Group
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
Fauldhead Musselband
Fault Zone Rocks, Unassigned
Faunal organic deposits
Fawcett Coal (Northumberland)
Fawes Wood Limestone Formation
Feal Intrusion
Fearn Pluton
Fearnaght Formation
Feldspathic Gneiss Of Strathy
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
Felton St Mary's Limestone
Fen And Terrace Gravel
Fen Clay
Fen Clay (Godwin,1940);Butery Clay (Skertchly,1877)
Fen Clay Formation [Part]
Fen Farm Limestone
Fen Farm Limestones Bed
Fen Gravel
Fen Lower Peat
Fen peat
Fen Sand and Gravel
Fen Silt
Fen-Margin Gravel
Fence Conglomerate
Fence Conglomerate Member
Fence Member
Fenland Formation
Fenton Coal (West And South Yorkshire)
Fenton Limestone
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
Ferricrete
Ferruginous Band
Ferruginous Limestone
Ferruginous Limestone Series
Ferruginous Oolite ('Belemnite Bed')
Ferruginous Sand
Ferruginous Sands
Ferruginous Sands And Sandstones
Ferruginous Sands Formation
Feshiebridge Psammite Formation
Fethaland 'Series'
Fethaland 'Series' [Obsolete Name And Code: See SDVO]
Fethaland Metagabbro
Ffairfach Grit
Ffairfach Grit Formation
Ffairfach Grit Member
Ffairfach Group [Obsolete Name And Code: Use FFG]
Ffernant Formation
Ffestiniog Flags Formation
Ffestiniog Formation [Obsolete Name And Code: Use FF]
Ffestiniog Group
Ffinnant Sandstone Formation
Ffridd Graig-Wen Formation
Fiachanis Gritty Sandstone Member
Fibua Formation
Fiddich Sand Member
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
Fife Ness Formation
Fifth (Bushley Green Lower Part) Terrace Of The Severn
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]
Fifth Shale Member
Fifth Terrace (River Severn)
Fifth Terrace [Deposits]
Filltirgerig Beds
Fimbriata-Waltoni Bed (Sensu Lato) and Upper Epithyris Bed
Fin Glen Lava Member
Fin Glen Lavas
Finavon Conglomerate Formation
Finavon Conglomerate Member
Findern Clay
Findhorn Complex
Findhorn Formation
Findhorn Pluton
Findhorn Pluton, Phase 1
Findhorn Pluton, Phase 2
Findhorn Pluton, Phase 3
Findhorn Sandstone Group
Findhorn Siltstone unit
Findlater Castle Quartzite
Findlater Castle Quartzite Member
Findlater Flag Formation
Findlater Flags [Obsolete Name And Code: Use FIFL]
Findochty Quartzite Member
Findochty Sub-Group
Findon Fish Bed
Findon Group
Fine Freestones
Finery Coal (South Wales)
Finery Coal [South Wales Coalfield]
Finglack Till Formation
Finnarts Conglomerate Member
Finnie's Main Coal
Finsbury Gravel
Finsbury Gravel Member
Finstall Member
Fintona Beds
Fintona Group
Fintown Pelite
Fintry Hills Group
Fintry Hills Lava Member
Fiona Formation
Fiona Sequence
Fionn Choire Formation
Fionn Formation
Fionn Sequence
Fionn Subsequence
Fire Beacon Chert Formation [Obsolete Name And Code: Use COH]
Fireach Beag Kyanite Gneiss Member
Firebeacon Chert
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
First Abden Limestone
First Brimham Grit
First Brown Metal Coal
First Brown Metal Coal (West Yorkshire)
First Cromer Till
First Ell Coal
First Ell Coal (Nottingham And Derby)
First Kingshaw Limestone
First Limestone
First Limestone (Cumbria)
First Limestone To Second Limestone (Undifferentiated) (Cumbria)
First Mine Coal
First Northmoor Terrace Deposits
First or 10 Foot Terrace
First Or Birlington (Birlingham) Terrace
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
First Terrace [Deposits]
First Terrace Deposits
First Terrace Deposits or Floodplain Gravels Plus Sunk Channel
First Terrace Of The Ouse
First Terrace Of Warp
First Wales Coal
First Waterloo Coal (South Yorkshire, Nottingham And Derby)
Firth Coal Formation
Fish Bed Formation
Fishbourne Member
Fishburn Estheria Band
Fisher Beds
Fisher Formation
Fishgarth Wood Till Member
Fishguard Volcanic Complex
Fishguard Volcanic Group
Fishguard Volcanic Series
Fishpool Farm Grits
Fiskavaig Formation
Fisson's Quarry Conglomerate
Fittleworth Beds
Fittleworth Member
Fitzroy Member
Five Clouds Grit
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
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
Fladen Group
Fladen Member
Flaggy Delf Coal (South Lancashire)
Flags Formation
Flagstaff Limestone Formation
Flamborough Chalk Formation
Flamborough Formation
Flanders Moss Peat Formation
Flandrian Deposits
Flat Holm Limestone Member
Flathill Flint
Flatt Coal
Flatts Coal (North Staffordshire)
Flaxby-Tollerton Moraine Member
Fleckies Meadow Conglomerate
Fleet Member
Fleet Pluton (Phase 1)
Fleet Pluton (Phase 2)
Fleetwood Dyke Group
Fleming Hall Formation
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
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
Floodplain Sand and Gravel
Floodplain Terrace
Floodplain Terrace Deposits
Floodplain Terrace Deposits and Submerged Channel
Floodplain Terrance Deposits Plus Buried Channel
Floor Coal (Nottingham And Derby)
Flora Formation
Flora Sequence
Floral organic deposits
Flounder Formation
Flow Moss Lava Member
Flow Moss Lavas
Flow till
Flow Till, Devensian
Flows
Flugga Sandstone Member
Fluid Extraction
Fluvial Alluvium
Fluvial And Older River Sands And Gravels
Fluvial And Older River Sands And Gravels With Associated Clay
Fluvial deposits
Fluvial Deposits (Undifferentiated)
Fluvial diatomite
Fluvial Parts Of Swettenham And Lytham Formations.
Fluvio-aeolian deposits
Fluvio-Glacial Flood Gravels
Fluvio-Glacial Sand And Gravel
Fluvio-Marine Crag
Fluvioglacial Deposits
Fluvioglacial Gravel
Fluvioglacial Sand And Gravel (Obsolete Name And Code: Use Gfsg)
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
Foel Y Ddinas Mudstones Formation
Foel-Y-Ddinas Mudstones [Obsolete Name And Code: Use FYD]
Fogger Reef Limestone
Foggs Coal (South Lancashire)
Foggs Mine
Foggs Mine Coal
Folkeston Coal (Milford, South Wales)
Folkeston Vein
Folkestone Beds
Folkestone Formation
Folkestone Formation And Sandgate Formation (Undifferentiated)
Folkestone Sands
Follifoot Grit
Folly Coal (Milford, South Wales)
Folly Sandstone
Folly Vein
Fontmell Magna Sand
Fontmell Magna Sand Member
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
Foraminifera Marine Band
Foraminifera Marine Band [Local Name: Use EMMB]
Ford [Magnesian Limestone] Formation
Ford Formation
Ford Formation (Patch-Reef)
Ford Formation (Shelf-Edge Reef)
Fordell Marine Band
Forden Mudstone Formation
Forden Mudstones Formation
Fordon Evaporite [Obsolete Code: Use FOEV]
Fordon Evaporite Formation
Fordon Evaporites (Duplicate Code: 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: use FORST]
Forest Clay
Forest Hollow Beds [Obsolete Name And Code]
Forest Lodge Member
Forest Marble
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
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
Forth Catchments Subgroup
Forth Clay Formation
Forth Formation
Forth Valley Formation
Forth-Teith Formation
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
Foston Limestones
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
Four Ashes Sand And Gravel Formation
Four Ashes Sands And Gravels
Four Fathom Limestone
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
Fourth Hosie Limestone
Fourth Limestone
Fourth Limestone (Cumbria)
Fourth Limestone To Seventh Limestone (Undifferentiated) (Cumbria)
Fourth Limestone To Sixth Limestone (Cumbria)
Fourth Or Ailstone Terrace [Deposits]
Fourth Or Hanborough Terrace Deposits
Fourth Shale Member
Fourth Terrace
Fourth Terrace (River Severn)
Fourth Terrace [Deposits]
Fourth Terrace Deposits
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
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
Foxholes Mine Coal
Foxholes Rock
Foxley Tuff
Foxley Tuff Formation
Foxmould
Foxmould And Cowstone Beds
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
Freeland Sand and Gravel Member
Freeland Terrace Deposits
Freemanstown Picrite
Freestone Series
Freestone Series [Obsolete Name And Code: Use POFR]
Fremington Member
Fresgeo Sandstone [Unit Name And Code Obsolete: Use FGSA]
Fresgeo Sandstone Member
Fresgoe Sandstone
Fresgoe Sandstone Bed
Fresgoe Sandstone Member
Freshfield Sandstone Member
Freshney Sandstone Member
Freshwater Alluvium
Freshwater Beds
Freshwater East Formation
Freshwater Gravel Member
Freshwater West Formation
Friar Waddon Member
Friars Bay Marls (One)
Friars Bay Marls (Three)
Friars Bay Marls (Two)
Friars Point Limestone Formation
Friarton Gravel
Frigate Formation
Frigg Sandstone Member
Frith Crag Breccia Member
Frith Crag Member
Frith Crag Tuffs
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
Frodingham Ironstone Member
Frodsham Sandstone Member
Frog Hall Member
Frog Hall Sand and Gravel
Frog Lane Coal (South Wales)
Froghall Haematite
Froghall Ironstone
Froghall Stone
Froghill Farm Gravel Member
Frogmore Gravel
Frome Clay and Fuller's Earth (Undifferentiated) [Obsolete Code: Use FEFR]
Frome Clay and Fuller's Earth [Undifferentiated]
Frome Clay Formation
Frome-Piddle Formation
Fron Frys Formation
Fron Frys Slates
Fron Newydd Member
Fron-fawr Formation
Frondderw Ash [Obsolete Name And Code: See FRT]
Frondderw Tuff Member
Froswick Formation
Froswick Tuff Formation
Froswick Tuffs
Fucoid Beds
Fucoid Beds Formation
Fucoid Beds Member
Fucoid Shales
Fulbeck Member
Fulbeck Sand and Gravel
Fulbeck Sand and Gravel Member
Fulledge Thin Coal (Lancashire)
Fulledge Thin Mine
Fulledge Thin Mine Coal
Fuller's Earth
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
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
Fyal Lava Member
Fydlyn Felsitic Beds [Obsolete Name And Code: See NGW]
Fydlyn Felsitic Formation
Fydlyn Group [Obsolete Name And Code: See NGW]
Fylde Halite Member
Fynddog Grits
Fynnon Limestones
Gaerfawr Formation
Gaerfawr Group [Obsolete Code: Use GAFA]
Gafallt Shales
Gafallt Shales Facies (Caban Conglomerate Formation)
Gafallt Shales Facies Formation
Gag Lane Limestone [Obsolete Name And Code]
Gaick Plateau Moraine Formation
Gaick Psammite Formation
Gair Burn Coal
Gair Limestone
Gairbeinn Pebbly Psammite Member
Gairbeinn Psammite Formation
Gaisby Rock
Gala 7
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
Galdenoch Formation
Galdenoch Group
Gale Seam
Gallagh Bridge Formation
Galley Sands
Galloway Granitic Suite
Gamlan Black Shales
Gamlan Flags And Grits
Gamlan Formation
Gamlan Shale Group [Obsolete Name And Code: Use GN]
Gamlingay Clay
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
Garabal Hill - Glen Fyne Pluton
Garantiana Mudstone Member
Garantiana Mudstone Member And Cullaidh Shale Formation (Undifferentiated)
Garantiana Shale Member
Garbad Sill (South Arran)
Garbh-Dhail Quartz-Gabbro Ring-Intrusion
Garburn Dacite Formation
Garburn Formation
Garburn Formation [Part]
Garc Garw Coal (South Wales)
Gardden Lodge Marine Band
Gardden Lodge Marine Band [Local Name: See CWMB]
Gardden-Fawr Ash
Garden Course [Vein]
Garden Course Coal (Somerset)
Gardenstown Conglomerate Formation
Gargunnock Hills Group
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
Garn Bach Dacite
Garn Boduan Microgranodiorite Intrusion
Garn Caws Sandstone
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
Garnfor Microgranite Pluton
Garnkirk Limestone
Garnkirk Lower Fireclay
Garnkirk Main Fireclay
Garrique Cornstone Formation [Obsolete Name And Code: See KNW]
Garrison Sill
Garron Chalk
Garron Chalk Formation
Garron Chalk Member
Garron Point Actinolitic Schists
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
Garth Tuff Member
Gartocharn Till Formation
Garva Bridge Psammite Formation
Garvagh Bridge Member
Garvald Lava Member
Garvald Lavas
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
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
Gastrioceras Listeri Marine Band [Obsolete Name And Code: Use LSMB]
Gastrioceras Sigma Marine Band
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
Gault Clay
Gault Clay Formation
Gault Formation
Gault Formation And Upper Greensand Formation (Undifferentiated)
Gavells Clough Sandstone
Gavells Clough Sandstone Member
Gawber Coal (West Yorkshire)
Gawthwaite Formation
Gawthwaite Sandstone Member
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
Gelli-Grin Calcareous Ashes
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
Gerrards Cross Member
Getting Rock Ironstone (South Staffordshire)
Ghrudaidh Formation
Ghrudaidh Formation [Also Grudaidh Formation] [Obsolete Code: Use GUD]
Ghrudaidh Group
Gibbet (Conglomerate) Hill Group
Gibbet Hill Conglomerate
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
Gillfoot Sandstone Formation
Gillfoot Sandstone Member
Gillis Field Microporphyroblast Gneiss Member
Gilmerton Ironstone
Gilmerton Limestone
Gilmerton Limestone [Obsolete Name And Code: Use HUR]
Gilnahirk Formation
Gilnahirk Group
Gilwern Clay Formation
Gilwern Clay Member
Gilwern Oolite
Gilwern Oolite Formation
Gilwern Volcanic Formation
Gin Head (Older) Vent
Gin Head Vent
Gin Mine Marine Band
Gin Mine Marine Band [Local Name: Use AGMB]
Gingham Coal (South Lancashire)
Gingham Mine
Gingham Mine Coal
Ginstane Ironstone
Girlsta Limestone [Obsolete Code: Use GIRL]
Girlsta Limestone Formation
Girvan - Ballantrae Complex
Girvan Formation
Girvan Group
Girvanella Band
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)
Glacial Erratic (Parent Rock Unspecified)
Glacial Gravel
Glacial Lake Deposits
Glacial Lake Deposits (Including Penecontemporaneous Fluviatile Deposits)
Glacial Meltwater Deposits
Glacial Raft (Great Limestone)
Glacial Sand and Gravel
Glacial Sands And Gravels
Glacial Silt
Glacial Silts And Clays
Glacial 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)
Glaciofluvial deltaic (and/or subaqueous fan) deposits
Glaciofluvial Deltaic Deposits
Glaciofluvial Deltaic Deposits, Devensian
Glaciofluvial Deltaic Deposits, Devensian (Irish Sea Ice)
Glaciofluvial deposits
Glaciofluvial Deposits (Irish Sea Ice)
Glaciofluvial Deposits (Undifferentiated)
Glaciofluvial Deposits (Undifferentiated), 1
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)
Glaciofluvial Deposits, Undifferentiated (Middle Pleistocene)
Glaciofluvial Deposits, Undifferentiated, Anglian
Glaciofluvial Deposits, Undifferentiated, Devensian
Glaciofluvial Deposits, Undifferentiated, Devensian (Welsh Ice)
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, 1, Devensian
Glaciofluvial Sheet Deposits, 2
Glaciofluvial Sheet Deposits, 2, Devensian
Glaciofluvial Sheet Deposits, 3
Glaciofluvial Sheet Deposits, 3, Devensian
Glaciofluvial Sheet Deposits, 4, Devensian
Glaciofluvial Sheet Deposits, Anglian
Glaciofluvial Sheet Deposits, Devensian
Glaciofluvial Sheet Deposits, Devensian (Irish Sea Ice)
Glaciofluvial Sheet Deposits, Devensian (Welsh Ice)
Glaciofluvial Sheet Deposits, Mid Pleistocene
Glaciofluvial Sub-Glacial Deposits
Glaciofluvial Sub-Glacial Deposits (Undifferentiated)
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
Glaciolacustrine Pro-Glacial Deposits
Glaciolacustrine Proglacial Deposits
Glaciolacustrine Sand And Gravel
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
Glamorgan Formation
Glamorgan Glacigenic Formation
Glannoventia Formation
Glanrafon Beds
Glanrafon Slates [Obsolete Name And Code]
Glanypwll Formation
Glanyrafon Formation
Glanyrafon Formation (Lower Tongue)
Glanyrafon Formation (Upper Tongue)
Glaramara Tuff
Glaramara Tuff Member
Glas Bheinn Mhor Granite (Skye Eastern Red Hills Centre: Phase 1)
Glas Bheinn Porphyritic Dolerite Intrusion
Glas Choire Sandstone Member
Glas Coire Alluvial Member
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
Glauconitic Beds
Glauconitic Marl
Glauconitic Marl Member
Glauconitic Sands
Glauconitic Sands [In Part] And Ferruginous Grit
Glauconitic Sandstone Member
Gleann Baddoch Dolomite
Gleann Beag Limestone Member
Gleann Beag Phyllites
Gleann Beag Ribbed Limestone
Gleann Beag Schist
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
Glebe Farm Bed
Gledstone Kennels Beds
Gleilyd Coal (South Wales)
Glen Achall Psammite and Semipelite Member
Glen App Conglomerate
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
Glen Banvie Formation
Glen Banvie Pluton
Glen Banvie Series
Glen Bay Gabbro Intrusion
Glen Bay Granite Intrusion
Glen Beag Schist
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
Glen Derry Diorite
Glen Dessary Intrusion
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
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
Glen Kyllachy Intrusion
Glen Kyllachy Pluton
Glen Lethnot (Grit) Group [Obsolete Name And Code: Use GLGT]
Glen Lethnot Grit Formation
Glen Lethnot Grits
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
Glen Park Volcanic Detrital Member [Obsolete Name And Code: Use GBV]
Glen Parva Clay
Glen Parva Formation [Obsolete Name And Code: Part Of CBP]
Glen Parva Member
Glen Rushen Formation
Glen Sanda Facies [Strontian Pluton]
Glen Sannox Conglomerate
Glen Scaddle Complex
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
Glen Sluan Schist Formation
Glen Spean Subgroup
Glen Suie Limestone Member
Glen Taitneach Schist Member
Glen Tanar Quartzite And Mica Schist Group
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
Glenarm Chalk Formation
Glenarm Chalk Member
Glenashdale Sill (South Arran)
Glenbervie Porphyry
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: See GPVD]
Glenburn Volcaniclastic Member
Glencar Limestone Formation
Glencartholm Volcanic Beds
Glencartholm Volcanic Group
Glencartholm Volcanic Member
Glencoe Caldera-Volcano Complex
Glencoe Quartzite
Glencoe Quartzite Member
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 Code: Use GLLY]
Glenelly Greenbeds
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)
Glengawna Formation [Obsolete Code: Use GAA]
Gleniffer Lava Member
Glenkeel Member
Glenkiln Black Shales
Glenkiln Shale Formation
Glenkiln Shales
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
Glenshalloch Shales
Glenshesk Tuff Formation
Glenshirra Subgroup
Glenshirra Succession
Glenstaghey Formation
Glentane Hill Sill
Glentham Formation
Glenvale Formation
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
Glion Cam Unit
Globe Coal (Somerset)
Gloddaeth Purple Sandstone Formation
Glos Oolite Series
Glur-Bheinn Member
Glycymeris Sandstone
Glyn Dyfrdwy Group [Obsolete Name And Code]
Glyn Formation
Glyn Gower Formation
Glyn Gower Siltstones [Obsolete Code: Use GYG]
Glyn Gower Siltstones Member
Glyn Grit
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]
Glyntograptus Teretiusalus Shales
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
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
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
Gordale Limestone Member
Gordon House Member
Gorestown Mudstone Member
Gorge Sandstone
Gorllwyn Coal (South Wales)
Gorllwyn Grits
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
Gourdon Harbour Sandstone Member [Obsolete Name And Code: See GNF]
Gourdon Sandstone Formation
Gourock Formation
Gourock Granite
Gourock Sand Formation
Gourock Sand Member
Gourock Sandstone Member
Gouther Crag Breccia Member
Gouther Crag Member
Govan Blackband Ironstone
Govan Blackband Ironstone (Glasgow)
Govan Coal
Gowk Stane Member
Gowk Stane Volcaniclastic Member
Gowkstane Member
Gowlaun Shale
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
Grammysia Beds
Grammysia Member
Grampian Catchments Subgroup
Grampian Division [Obsolete Name And Code: Use GRAM]
Grampian Group
Grampian Group (Undivided)
Grampian Group And Appin Group (Undifferentiated)
Grampian Group and Dava Succession (Undifferentiated)
Grampound And Probus Series
Grampound Formation
Grampound Grit [Obsolete Name And Code: Use TRSA Or GRAD]
Grampound Group
Gramscatho Beds
Gramscatho Group
Gramscathos Beds
Granby Limestones
Granby Member
Grange Crags Andesite Member
Grange Formation
Grange Hill Sand Formation
Grange Member
Grange Sandstone
Grange Sandstone Member
Grange-Over-Sands Formation
Grangemouth Beds
Grangemouth Formation
Grangemouth Silt Member
Granite
Grant Sand Member
Grantham Formation
Grantham Formation And Northampton Sand Formation (Undifferentiated)
Granton Sandstone
Granton Sandstones
Grantown Formation
Grantown Granite Pluton
Grantown Pluton
Graptiliferous Mudstones
Graptolite Shales
Gras Isaf Coal (South Wales)
Gras Uchaf Coal (South Wales)
Grassington Grit
Grassington Grit Formation
Grauer Salzton Formation
Gravel Caverns Conglomerate Member
Gravel Terrace
Gravel Terraces
Gravel, Sand And Loam
Graveland Lens Member
Graven Complex
Gray Sandstone Group
Grayber Limestone
Grays Brickearth
Greasborough Coal
Great Arc Sandstone
Great Britain Glacigenic Supergroup
Great Britain Superficial Deposits Supergroup
Great Caverns Conglomerate [Sic]
Great Coal (Somerset)
Great Coal (Titterstone Clee)
Great Cockup Picrite [Obsolete Name And Code]
Great Conglomerate
Great Conglomerate Formation
Great Course
Great Course Coal (Somerset)
Great Easby Clay Formation
Great Easby Member
Great Estuarine Group
Great Estuarine Series
Great Farlow Sandstone Formation
Great Glen Fault Zone
Great House Agglomerate
Great House Intrusion
Great Ladstones Breccia Member
Great Ladstones Member
Great Langdale Tuff Formation
Great Limestone
Great Limestone Member
Great Mine Limestone
Great Oolite
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
Great Oolite Series
Great Orme Limestone
Great Orme Limestone Formation [Obsolete Name And Code: Use LGHL]
Great Quartzite
Great Row Coal (North Staffordshire)
Great Row Formation
Great Row Measures
Great Row Member
Great Scar Limestone
Great Scar Limestone Group
Great Seam Coal (Lothian)
Great Strickland Limestone
Great Vein
Great Wanney Crags Sandstone
Great Whin Sill
Great Whinscale Dacite Member
Great Whinscale Member [Obsolete Name And Code: See TNM]
Great Whinscale Rhyolite
Great White Sandstone
Great Wood Gravel Member
Greatmoor Hill Vent
Green Ammonite Beds
Green Ammonite Member
Green Beds
Green Beds "Sensu Stricto"
Green Beds (A) [Obsolete Name And Code: Use GRE]
Green Beds (B) [Obsolete Name And Code: Use GRE]
Green Beds (Obsolete Code: Use GRE)
Green Beds [Obsolete: Use GRE]
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
Green Lane Coal
Green Member
Green Mudstones "Member"
Green Slates
Greenan Castle Ash
Greenan Castle Pyroclastic Member
Greenan Formation
Greenan Sandstone Formation
Greenbeds
Greencastle Green Beds
Greencliff Beds
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
Greensand Formation
Greensand Group [Obsolete Name And Code: See UGS]
Greensand Of Morvern [Obsolete Name And Code: Use MOGR]
Greensands
Greenscoe Tuff Formation
Greenses Coal (Northumberland)
Greenses Limestone
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
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
Gretna Till Formation
Grey
Grey and Tea Green Marls and Sully Beds
Grey Beds
Grey Chalk Member [Obsolete Usage: Part Of 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
Grey Marls And Yellow Sandstones With Chert
Grey Measures Of Yorkshire And Nottingham [Obsolete Name And Code: See PLCM And PMCM]
Grey Salt Clay Member
Grey Sands
Grey Sandstone Facies
Grey Sandstone Member
Grey Sandstone Series
Grey Shale
Grey Shale Member
Grey Shale Series
Grey Shales
Grey Shales Formation
Grey Slate
Grey's Crag Coal (Northumberland)
Greylake Member
Greys Crags
Greys Limestones Member
Greystoke Till Formation
Greystone
Greystone Formation [Obsolete Name And Code: Use BREN]
Greystone Or Passage Beds
Greywacke Conglomerate
Greywacke Conglomerate Formation
Gribin Mudstones
Gribun Chalk
Gribun Chalk Formation
Grid Sandstone Member
Grieston Formation
Grieston Slates
Griffe Grange Bed [Obsolete Name And Code: Part Of WDL]
Grigadale Microgranite Intrusion
Grimley Andesite
Grimley-Type Porphyroid
Grindslow Shales
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
Grinstead Clay Formation
Grinstead Clay Member
Gristhorpe Member
Grit Sill
Grits Group
Grits In Skiddaw Slates [Obsolete Name And Code: Part Of SKG Or SKGM]
Gronant Group [Obsolete Name And Code: See CLWYD And CRAV]
Grorudite Swarm ["Grorudite" Swarm]
Grorudite Swarm ['Grorudite' Swarm] [Obsolete Name And Code: See PARH]
Group XVI
Grouping Of Harford Sands
Grove Coal (South Staffordshire)
Grovesend Beds
Grovesend Formation
Grovesend Member
Grudaidh Formation
Grugie Pluton
Grumack Hill Quartzite Member
Gruney And Fethaland Formation
Gruting Greenschist Formation
Gryphaea Bed
Gryphaea Grit
Gryphite Grit
Gryphite Grit And Buckmani Grit
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
Gubeon Marine Band [Local Name: Use AMMB]
Guirdil Arkose
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
Gunthorpe Formation
Gunthorpe Member
Gupton Formation
Gur Coal (Coalbrookdale)
Gurnard Member
Gurrington Slate Formation
Gutter Coal (Titterstone Clee)
Gutterfoot Sand Member
Gutterford Burn Flagstones
Gwaelo Formation
Gwaelo Sequence
Gwaelo Subsequence
Gwaenysgor Limestone Formation
Gwalchmai Formation
Gwastaden Group
Gwastadnant Grits
Gwddel Felsitic Formation
Gwendraeth Coal (South Wales)
Gwent Levels Formation
Gwern Feifod Lava Member
Gwern Feifod Tuff Member
Gwern Gof Tuff
Gwern Gof Tuff Formation
Gwern-Feifod Group [Obsolete Name And Code]
Gwersyllt Little Coal (North Wales)
Gwersyllt Little Coal (North Wales) [GWLC]
Gwespyr Sandstone
Gwespyr Sandstone Formation
Gwna Group
Gwna Melange Formation (A) [Obsolete Name And Code: See NGW]
Gwna Melange Formation (B) [Obsolete Name And Code: See NGW]
Gwrych Limestone
Gwscwm Coal (South Wales)
Gwscwm Rider Coal (South Wales)
Gwyddel Felsitic Formation [Obsolete Name And Code]
Gwynedd Supergroup
Gwynllwg Formation
Gyfenni Wood Shale Formation
Gyffin Shales [Obsolete Name And Code: Use COMU]
Gypseous Shales
Gyrn Ddu Microgranodiorite Pluton
Gyrn Goch Granite Intrusion
H1
Habberley Shale Formation
Hackley Limestone Member
Hackness Rock Member
Hackney Gravel Formation
Hackney Gravel Member
Haddenham Formation
Haddington's Vein
Haddiscoe Sand And Gravel Member
Haddiscoe Sands And Gravels
Haddo House Pluton
Haddock Sandstone Unit
Hadley Formation [Obsolete Name And Code: See ETM]
Haffield Breccia Formation
Haffield Conglomerate
Hafod Coal (South Wales)
Hafod Fawr Formation
Hafod Heulog Marine Band
Hafod Heulog Marine Band [Local Name: See HTMB]
Hafod Ifan Limestone Member
Hafod Member
Hafotty Formation
Hafotty Group
Haggard Coal (Milford, South Wales)
Haggard Vein
Haggis Grit And Conglomerate
Hagley Ash
Hagley Shale Formation
Hagley Shales
Hagley Volcanic Formation
Hagley Volcanic Formation [Duplicate Code: Use HGY]
Hagley Volcanic Formation, Hagley Shale Formation And Whittery Volcanic Formation (Undifferentiated)
Hagley Volcanic Group [Obsolete Name And Code: See HGY]
Hagshaw Group
Haig Fras Granite
Haigh Moor Coal (West Yorkshire)
Haigh Moor Rock
Haigh Yard Coal (South Lancashire)
Hailes Lava Member
Hailes Member
Hailes Sandstone
Hairmyres Limestone
Hairy Craig Sill
Haisborough Group
Haist Pebbly Sandstone Member
Haist Sandstone Member
Hake Mudstone Member
Halberton Breccia Formation
Haldon Gravel
Haldon Gravel Formation
Haldon Gravels
Haldon Sands
Haldon Sands Formation
Hale Common Gravel Member
Hales Clay
Hales Clay Member
Halesowen Beds
Halesowen Formation
Halesowen Formation [Duplicate Code: Use HA]
Halesowen Group
Halesowen Sandstone Series
Half Yard Coal
Half Yard Coal (Cheadle)
Half Yard Coal (Cumbria)
Half Yard Coal (Hanwood)
Half Yard Coal (North Wales)
Half Yard Coal (South Lanacashire)
Half Yard Coal (Warwickshire)
Half Yard Coal (Wyre Forest)
Half Yard Limestone
Halfway Farm Formation
Halibut Carbonate Formation
Halkyn Formation [Obsolete Name And Code: See Revision Data]
Hall Carleton Formation
Hall Gill Sandstone
Hall Hill Sandstones
Hallaig Sandstone
Hallaig Sandstone Member
Hallane Formation
Halligill Limestone
Halton Shales
Halwell Cottage Beds
Ham Green Member
Ham Hill Limestone Member
Ham Hill Stone
Ham Mudstone
Ham-Scarfskerry Flagstone Formation
Ham-Scarfskerry Flagstone Subgroup
Hamble Formation
Hambleton Mudstone Formation
Hambleton Mudstone Member
Hambleton Mudstones
Hambleton Oolite Member
Hambleton Oolites
Hamilton Sandstone
Hampen Formation
Hampen Marly Beds
Hampen Marly Formation
Hampole Beds
Hampshire Avon Formation
Hams Coal (North Staffordshire)
Hamstead Formation [Obsolete Name And Code: Use EN]
Hamstead Marshall Gravel
Hamstead Member
Hanborough [Gravel] Formation
Hanborough Gravel Member
Hanborough Member
Hanborough Terrace Deposits
Hanchurch Sandstone
Hanchurch Sandstone Bed
Hand Coal (Northumberland)
Handborough Terrace Deposits
Handsworth Rock
Hanged Man Bed
Hanged Man Member (Former Formation)
Hanging Knotts Tuff Member
Hanging Rocks Conglomerate Member
Hanging Rocks Formation
Hanging Stone Tuff
Hanging Stone Tuff Member
Hangman Grits [Obsolete Name And Code: Use HASA]
Hangman Sandstone Formation
Hangman Sandstone Group [Obsolete Name And Code: See HASA]
Hannaborough Intrusion
Hanworth Till Member
Happendon Coal (Douglas)
Happendon Limestones [Obsolete Name And Code: Subsumed Within PGP]
Happisburgh Clays
Happisburgh Diamicton
Happisburgh Glacigenic Formation
Happisburgh Glacigenic Formation And Lowestoft Formation (Undifferentiated)
Happisburgh Sand Member
Happisburgh Sands
Happisburgh Till Member
Harbour Cove Slate Formation
Harbour Cove Slates
Harby Head
Hard Bed Band Coal (South Derbyshire)
Hard Bed Band Coal (West And South Yorkshire)
Hard Bed Band Marine Band
Hard Bed Band Marine Band [Local Name: See MFMB]
Hard Bed Band Rock (West Yorkshire)
Hard Bed Coal (West And South Yorkshire)
Hard Bed Marine Band
Hard Bed Marine Band [Local Name: See MFMB]
Hard Coal (Bristol Area)
Hard Coal (South Lancashire)
Hard Coal (South Wales)
Hard Mine
Hard Mine Coal
Hard Mine Coal [Obsolete Code: Probably Replaced By HARD]
Hard Splint Coal
Hard Vein Coal (South Wales)
Harden Beds
Hardmine Coal (North Staffordshire)
Hardraw Scar Limestone
Hardrow Scar Limestone
Hardy Coal (Northumberland) [Also Known As Stony Coal]
Harehill Pluton
Harelaw Lava Member
Harelaw Lavas
Harelawhill Limestone [Duplicate of HLLS: Use EWL]
Harelawhill Limestone [Obsolete Name And Code: Use EWL]
Hareshaw Conglomerate Formation
Hareshaw Head Coal
Harestones Felsite [Obsolete Name And Code: Use CFCOH]
Harestones Rhyolite
Harestones Rhyolite [In Carrock Fell Complex]
Harford Member
Harford Sands
Harford Sands Member
Hargate End Limestone
Harlaw Limestone
Harlech Beds (Undifferentiated) [Obsolete Name And Code]
Harlech Grits Group
Harlequin Formation [Obsolete Name And Code: Part Of GUN]
Harley Coal (South Yorkshire)
Harlock Formation
Harlock Grits
Harlow Hill Sandstone
Harnage Shale Formation
Harnage Shales
Harnlo Coal (South Wales)
Harptree Beds
Harra Ebb Sandstone Formation
Harrath Tuff Member
Harrath Tuffs And Lavas
Harrington Four Foot Coal (Cumbria)
Harris Bay Member (Western Intrusion, Rum Layered Suite)
Harris Bay Member (Western Layered Intrusion, Rum Layered Suite) [Obsolete Code: Use RLW1]
Harris Member
Harrison Stickle Breccia Member
Harrison Stickle Member
Harrock Hill Grit
Harrogate Roadstone
Harrogate Till Formation
Harry Stoke Marine Band
Harry Stoke Marine Band [Local Name: Use VDMB]
Hartfell Pebbly Grit
Hartfell Shales
Hartfield Breccia Formation
Hartfield Formation
Harthwaite Formation
Harthwaite Tuff Formation
Hartland Quay Shale
Hartlepool And Roker Dolomite [Obsolete Name And Code: Use ROD]
Hartlepool Anhydrite
Hartlepool Anhydrite Formation
Hartley Coal
Hartley Coal (Dailly)
Hartley Coal (Stirling, Clackmannan)
Hartley Hill Formation
Hartshill Formation
Hartshill Sandstone Formation
Hartwell Clay
Harvey
Harvey Coal (Northumberland And Durham)
Harvey Marine Band
Harvey Marine Band [Local Term: Use VDMB]
Harwich Formation
Harwich Formation And Lambeth Group (Undifferentiated)
Harwich Member [Obsolete Name And Code]
Harwich Stone Band
Harwood Band
Harwood Beds
Hascosay Slide
Hascosay Slide Zone Mylonites
Haslingden Flags
Hastings Beds
Hastings Beds (Subgroup)
Hastings Sands
Hathern Anhydrite Formation
Hathern Anhydrite Series
Hathern Gravel
Hatherwood Limestone Member
Hatton Conglomerate Formation
Hatton Conglomerate Member
Hatton Till
Hatton Till Formation
Hauchielin Coal (Tranent - Haddington)
Haugh Wood Formation
Haughmond Conglomerate
Haughmond Conglomerate Member
Haughrigg Coal
Haughton Limestone
Haughton Marine Band
Haunchwood Bed [Obsolete Name And Code]
Hauptanhydrit Formation
Hauptdolomit Formation
Hauxley Brockwell Coal
Haven Brow Beds
Haverford Mudstone Formation
Haverigg Haws Anhydrite Member
Haw Bank Limestone
Haw Bank Limestone [Not Used By BGS: Use CHL]
Haw Hill Borehole Formation
Hawes Limestone
Haweswater Complex [Obsolete Name And Code: See HAWS]
Haweswater Ignimbrite Group
Haweswater Intrusions
Hawick Group
Hawick Group And Riccarton Group (Undifferentiated)
Hawick Group Undivided
Hawick Rocks
Hawk's Nest Coal
Hawkcraig Point Sill
Hawkesbury Clay Member
Hawks Brow Flint
Hawks Nest Coal
Hawksmoor Formation [Obsolete Name And Code Use: CHES]
Hawthorn Limestone Member [Obsolete Name And Code: Use HUR]
Hayburn Beds
Hayburn Formation
Hayes Sandstone Formation
Hayle Sandstones
Haymoor Bottom Clay Member
Hayne Beech Beds
Hayne Beech Formation
Hayne Beech Member
Haystacks Andesite
Haystacks Andesite Member
Haystacks Member
Hayton Anhydrite
Haywood Under Coal
Hazel Greave Grit [Obsolete Name And Code Use: GSGY]
Hazel Greave Grit And Guiseley Grit (Undifferentiated)
Hazelbury Bryan Formation
Hazelbury Bryan Formation And Kingston Formation (Undifferentiated)
Hazon Coal (Rothbury Area)
Hazon Lee Coal (Northumberland)
Head
Head And Talus (Undifferentiated)
Head Brickearth
Head Brickearth, Older
Head Brickearth, Younger
Head Gravel [Not Recommended: Use HEAD]
Head, 1
Head, 2
Head, 3
Headley Formation
Headley Heath Member
Headon Beds
Headon Beds And Osborne Beds (Undifferentiated)
Headon Formation
Headon Hill Formation
Headon Warren Sand And Gravel Member
Heads Of Ayr Vent
Headsmuir Sandstone
Heales Lock Gravel
Hearson Hill Mudstone
Heath Hayes Coal (South Staffordshire)
Heath Member
Heathen Coal
Heathen Coal (South Staffordshire)
Heather Formation
Heathery Heugh Sandstone
Heavitree And Alphington Breccias [Obsolete Code: Use AHBR]
Heavitree Breccia
Heavitree Breccia Formation
Heavitree Breccia Member
Heavitree Conglomerate
Heavy Industrial Development
Hebblethwaite Member
Hebburn Dyke
Hebburn Fell Coal (Northumberland And Durham)
Hebden Formation
Hebridean Province
Hebrides Formation
Hebrides Margin Group
Hebrides Subvolcanic Suite
Heimdal Sandstone Member
Helen's Bay Formation
Hell Hole Coal (South Lancashire)
Hell Hole Mine
Hell Hole Mine Coal
Hell's Mouth Formation
Hell's Mouth Grits
Hells Hole Dyke
Hellvellyn Formation
Helm Member
Helman Head Beds [Obsolete Name And Code: See CLYTH]
Helmeth Grit [Obsolete Code: Use HLG]
Helmeth Grit Member
Helmeth Grits
Helmsdale Boulder Beds Equivalent
Helmsdale Boulder Beds Formation
Helmsdale Granite
Helmsdale Granite, Phase 1
Helmsdale Granite, Phase 2
Helmshore Grit
Helpet Edge Rock
Helsby Sandstone Formation
Helsby Sandstone Formation [Obsolete Code: Use HEY]
Helvellyn Tuff Formation
Helwellyn Tuff Member
Hematitic Tuffs
Hemingbrough Glacial Lake Formation
Hemingbrough Glaciolacustrine Formation
Hemington Member
Hemington Terrace Deposits
Hemlaw Vent And Plug
Hempriggs Sand Member
Hemsworth Division
Hemsworth Member
Hen Coal (Bristol Area)
Hen-Dy-Capel Ironstone Member
Henblas Facies [In Ystrad Meurig Grits Formation]
Hendre Shales Formation
Hendre Shales Formation And Mydrim Shales Formation (Undifferentiated)
Hendy Farm Shales
Henfryn Formation
Hengistbury Beds [Obsolete Name And Code]
Henllan Ash Member
Hennel Cleugh Sandstone
Henry's Bridge Member
Hens Sike Coal
Henshaw Formation
Henshaw Siltstones
Hensingham Grit
Hensingham Group [Obsolete Name And Code: Use SMGP]
Hensingham Group And Coal Measures Group (Undifferentiated)
Hereford Formation
Hereford Till Member
Herford End-Moraine
Herma Ness Gneiss Member
Herma Ness Marble Member
Hermaness Ultramafic Zone
Hermod Sandstone Member
Herne Bay Member
Heron Group
Herring Coal (South Staffordshire)
Herring Formation
Hetton Beck Limestone Member
Hevda Phyllite Formation
Hevdadale Intrusion
Heversham House Sandstone [Obsolete Name And Code: Use SLVS]
Heversham House Sandstone Member
Hewett Sandstone
Heyden Rock
Heysham Harbour Sandstone
Heysham Harbour Sandstone Formation
Hibaldstow Beds
Hibaldstow Limestone
Hibaldstow Limestone Member
Hibaldstow Limestones
Hibaldstow Limestones Member
Hibaldstow Oolite
Hibernian Greensand
Hibernian Greensand Formation
Hibernian Greensands (Part)
Hibernian Greensands Formation And Ulster White Limestone Formation (Undifferentiated)
Hibernian Greensands Group
Hidra Formation
High Camlarg Coal (Dalmellington, South Ayrshire)
High Coal (Bristol Area)
High Corby Knowe Sill
High Cross Member
High Gamma-Ray Sands Unit
High Grains Sandstone
High Grit Sandstone
High Grit Sill
High Haume Limestone
High Haume Mudstone
High Haume Rhyolite
High Haume Tuff Formation
High Haume Volcanic Formation
High Hazles And Brinsley Coal (Vale Of Belvoir)
High Hazles Coal (South Yorkshire, Nottingham And Derby)
High Ireby Formation [Obsolete Name And Code: Undifferentiated Part Of EVG]
High Ireby Group [Obsolete Name And Code: See Also HIF]
High Lodge Clayey Silts And High Lodge Sands
High Lodge Gravel Member
High Lodge Member
High Lodge Silt Member
High Main
High Main + Metal Coal (Northumberland)
High Main Coal
High Main Coal (Leicestershire)
High Main Coal (Northumberland And Durham)
High Main Coal (Nottingham And Derby)
High Main Coal (Warwickshire)
High Main Marine Band
High Main Marine Band [Local Name: See MTMB]
High Main Marine Band Coal (Northumberland)
High Main Marine Band Seam
High Main Post Member
High Mains Formation
High Mains Sandstone
High Moor Sandstone
High Moor Sandstone And Doubler Stones Sandstone (Undifferentiated)
High Tor Limestone Formation
High Tor Limestone Formation, Cefnyrehndy Oolite Member And Hunts Bay Oolite Subgroup (Undifferentiated)
High Wood Marine Beds
High-Level Marine Shell Bed
Higher Bent Coal (South Lancashire)
Higher Bent Mine
Higher Bent Mine Coal
Higher Chamber Coal (South Lancashire)
Higher Chamber Mine
Higher Chamber Mine Coal
Higher Comberoy Formation
Higher Florida Coal (South Lancashire)
Higher Gravel Train
Higher Pigeon House Coal (South Lancashire)
Higher Ravenhead Coal (South Lancashire)
Higher Two Coal (South Lancashire)
Higher Two Mines
Higher Two Mines Coal
Highest Or Barnwell Terrace (Penning And Jukes-Browne (1881)
Highfield Farm Limestone
Highfield Farm Limestones Bed
Highfield Limestone
Highgate Coal (South Yorkshire)
Highgreen Coal
Highland Border Complex
Highland Border Grits [Obsolete Name And Code: Use BMSA]
Highland Border Ophiolite-Complex
Highland Border Sandstones
Highland Border Series
Highland Boundary Complex
Highlands Felsic Minor Intrusion Cluster
Highlands Mafic Minor Intrusion Cluster
Highlands Older Minor Intrusion Subsuite
Highlands Older Suite
Highlands Plugs And Vents
Highlands Younger Minor Intrusion Subsuite
Highlands Younger Suite
Highley Beds
Highley Formation [Obsolete Name And Code: See HA]
Highley Group
Highley-Brooch Coal (Wyre Forest)
Highstone Coal
Highworth Clay Member
Highworth Formation
Highworth Grit Member
Highworth Limestone Member
Hildasay Sandstone Member
Hildesay Granite
Hill Farm Formation
Hill House Flags
Hill House Flags Member
Hill House Grits
Hill House Grits Member
Hill House Shales
Hill House Shales Member
Hill Of Blairs Pluton
Hill Of Fare Intrusion
Hill Of Foudland Pelite Member
Hill peat
Hillbeck Limestone [Obsolete Name And Code: Use AFL]
Hillend Algal Band
Hillhead Group
Hillhead Red Bed Subgroup [Obsolete Name And Code: Use HSA]
Hillhead Sandstone Formation
Hillhead Sandstones, Flagstones And Shales
Hillhouse Limestone
Hillhouse Sill
Hillmorton Sand
Hillside Dolomitic Formation [Obsolete Name And Code: Use LAL]
Hillswick Group
Hilton Gravel
Hilton Gravels