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DIC_ROCK_NAMEV3 (3025 rows)
Dictionary table which is part of version 3 of the BGS Rock Classification Scheme. The main part of the RCS - it contains only single lithologies.

Displaying rows 106 to 125 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	DEFINITION_BKING	STATUS
106	ANO	Anorthosite - A type of anorthositic-rock. In the Rock Classification Scheme, it is a coarse-grained crystalline igneous rock whose mineral mode plots in field 10 of the quartz - alkali feldspar - plagioclase - feldspathoid (QAPF) diagram. Diorite, gabbro and anorthosite are separated according to the average composition of their plagioclase and the proportion of mafic minerals (M): if M is less than 10% the rock is anorthosite. British Geological Survey Research Report RR/99/06, section 5.1 and figs. 9, 11, 12.	R	Anorthosite	GRBA	24-FEB-00	TMCM	22-FEB-19	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; CI M<10%; quartz <5% of QAPF, feldspar dominant & >90% plagioclase, +/- mica/pyroxene/amphibole/olivine	C
107	ANONC	Oncoid-ankeritestone - An oncoid-dolostone in which the carbonate is composed dominantly of ankerite. British Geological Survey Research Report RR/99/03, section 3.2 and fig. 7. Synonym: ankerite-oncolite.	R	Oncoid-ankeritestone	GRBA	24-FEB-00	TMCM	08-MAR-19	Sediment with components >50% magnesium carbonate, >50% of magnesium carbonate is ankerite. Allochem dominantly as oncoids, >2mm coated grains with irregular partially overlapping laminae, biogenic structures may be present. Component size undefined.	C
108	ANOOL	Ooid-ankeritestone - An ooid-dolostone in which the carbonate is composed dominantly of ankerite. British Geological Survey Research Report RR/99/03, section 3.2 and fig. 7. Synonym: ankerite-oolite.	R	Ooid-ankeritestone	GRBA	24-FEB-00	TMCM	08-MAR-19	Sediment with components >50% magnesium carbonate, >50% of magnesium carbonate is ankerite. Ooids dominant allochem, <2mm coated grains with smooth regular laminae, usually spherical/ellipsoidal no obvious biogenic structures. Component size undefined.	C
109	ANOR	Anorthositic-rock - A type of coarse-grained normal crystalline rock. In the Rock Classification Scheme, this class includes anorthosite and similar rocks. The term may be used as a field classification when an accurate mineral mode from thin section examination is not available. British Geological Survey Research Report RR/99/06, section 5.1 and figs. 9, 10.	A	Anorthositic-rock	GRBA	24-FEB-00	TMCM	22-FEB-19	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; CI M<10%; quartz <20% or feldspathoids <10% of QAPF, feldspar dominant & >65% plagioclase, +/- mica/pyroxene/amphibole/olivine	C
110	ANPEL	Peloid-ankeritestone - A peloid-dolostone in which the carbonate is composed dominantly of ankerite. British Geological Survey Research Report RR/99/03, section 3.2 and fig. 7. Synonym: ankerite-peloidite.	R	Peloid-ankeritestone	GRBA	24-FEB-00	TMCM	08-MAR-19	Sediment with components >50% magnesium carbonate, >50% of magnesium carbonate is ankerite. Peloids dominant allochem, 0.01 to 0.5mm spherical/ellipsoidal microcrystalline ankerite grains, internally structureless. If faecal origin, pellet.	C
111	ANPIS	Pisoid-ankeritestone - A pisoid-dolostone in which the carbonate is composed dominantly of ankerite. British Geological Survey Research Report RR/99/03, section 3.2 and fig. 7. Synonym: ankerite-pisolite.	R	Pisoid-ankeritestone	GRBA	24-FEB-00	TMCM	08-MAR-19	Sediment with components >50% magnesium carbonate, >50% of magnesium carbonate is ankerite. Pisoids dominant allochem, >2mm coated grains with smooth regular laminae, usually spherical/ellipsoidal no obvious biogenic structures.Component size undefined.	C
112	ANSA	Ankerite-sand - A type of ankerite-sediment. In the Rock Classification Scheme, it is one in which clasts are predominantly 32 µm to 2 mm, with less than 75% of the clasts smaller than 32 µm and less than 25% larger than 2 mm. The grain size classes are defined in the same way as the siliciclastic sediments. British Geological Survey Research Report RR/99/03, section 3.2, table 6 and fig. 7. See also: silicate-sand.	R	Ankerite-sand	GRBA	24-FEB-00	TMCM	08-MAR-19	Sediment with grains >50% magnesium carbonate, >50% of magnesium carbonate is ankerite. Grains >50% or predominantly sand-grade, 0.032 to 2mm.	C
113	ANTHRA	Anthracite - A type of coal. It is a member of the pure humic coal series. The members of the pure humic coal series can be ranked in order as peat (the unlithified form), lignite, bituminous-coal, and anthracite (the lithified forms) based on increasing carbon content and decreasing volatile content. Anthracite is a hard black coal with a semi-metallic lustre and semiconchoidal fracture. It ignites with difficulty and burns without smoke. British Geological Survey Research Report RR/99/03, section 6.1, table 16 and fig. 10.	R	Anthracite	GRBA	24-FEB-00	TMCM	08-MAR-19	Lithified heterogeneous black mixture of a wide range of plant debris, none discernable. >90% carbon, dry, ash-free. Volatiles <14%. Carbonised with semi-metallic lustre & semi-conchidal fracture. Ignition difficult, burns smoke-free.	C
114	ARBST	Aragonite-boundstone - A lime-boundstone in which the carbonate is composed dominantly of aragonite. British Geological Survey Research Report RR/99/03, section 3.1 and fig. 6.	R	Aragonite-boundstone	GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock with components >50% calcite/aragonite, >50% of calcium carbonate is aragonite. Original components bound & encrusted by action of plants/animals in growth position (reef limestone). Component size not defined.	C
115	AREN	Arenite - A type of silicate-sandstone. In the Rock Classification Scheme, arenites have 0 - 15% matrix. British Geological Survey Research Report RR/99/03, section 2.2 and fig. 3.	A	Arenite	GRBA	24-FEB-00	TMCM	08-MAR-19	Siliciclastic arenaceous sedimentary rock <15% matrix particles <0.032mm. Grains quartz, feldspar, rock fragments, proportions not defined. A greywacke.	C
116	ARENR	Siliciclastic arenaceous rock - In the Rock Classification Scheme, these are siliciclastic rocks that are predominantly in size range 32 µm - 2 mm, with less than 75% of clasts smaller than 32 µm and less than 25% larger than 2 mm. British Geological Survey Research Report RR/99/03, section 2.2 and fig. 3.	A	Siliciclastic arenaceous rock	GRBA	24-FEB-00	TMCM	08-MAR-19	Siliciclastic arenaceous sedimentary rock, grains >50% from pre-existing siliceous rocks, Grains >50% or predominantly sand-grade, 0.032 to 2mm.	C
117	ARFST	Aragonite-framestone - A lime-framestone in which the carbonate is composed dominantly of aragonite. British Geological Survey Research Report RR/99/03, section 3.1 and fig. 6.	R	Aragonite-framestone	GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock with components >50% calcite/aragonite, >50% of calcium carbonate is aragonite. Fine, 0.032 to 0.25mm sediment fills cavities in framework of colonies of shells or skeletons.	C
118	ARGL	Argillaceous rock	N	Argillaceous rock	DJLO	05-APR-06	TMCM	31-AUG-18	Not Available	C
119	ARGST	Aragonite-grainstone - A lime-grainstone in which the carbonate is composed dominantly of aragonite. British Geological Survey Research Report RR/99/03, section 3.1 and fig. 6.	R	Aragonite-grainstone	GRBA	24-FEB-00	TMCM	08-MAR-19	Grain-supported Sedimentary rock with grains >50% calcite/aragonite, aragonite >50% of calcium carbonate crystals. <15% matrix, (particles <0.032mm), Grain size not defined.	C
120	ARGV	Aragonite-gravel - A type of lime-gravel in which the carbonate is composed dominantly of aragonite. British Geological Survey Research Report RR/99/03, section 3.1 and table 2.	R	Aragonite-gravel	GRBA	24-FEB-00	TMCM	08-MAR-19	Sediment with components >50% calcite/aragonite, >50% of calcium carbonate is aragonite. Components >50% or predominantly gravel-grade, >2mm.	C
121	ARLMST	Calcilutite - A type of limestone. The term may be used as a synonym for mud-grade limestone. British Geological Survey Research Report RR/99/03, section 3.1.	A	Calcilutite	AWEL	27-MAY-02	TMCM	08-MAR-19	Sedimentary rock with components >50% calcite/aragonite. 5-20% siliclastic mud-grade <0.032mm material.	C
122	ARMCST	Aragonite-microstone - A lime-microstone in which the carbonate is composed dominantly of aragonite. British Geological Survey Research Report RR/99/03, section 3.1 and fig. 6.	R	Aragonite-microstone	GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock with crystals >50% calcite/aragonite, aragonite >50% of calcium carbonate crystals. Petrological study shows obliterative sparry aragonite, <0.004mm in inequant blocky mosaics. Crystals submicroscopic.	C
123	ARMIS	Pisoid-aragonite-limestone - A pisoid-limestone in which the carbonate is composed dominantly of aragonite. British Geological Survey Research Report RR/99/03, section 3.1 and fig. 6.	R	Pisoid-aragonite-limestone	GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock with components >50% calcite/aragonite, >50% of Ca-carbonate is aragonite. Pisoids dominant allochem, >2mm coated grains with smooth regular laminae, usually spherical/ellipsoidal not obviously of biogenic origin. Component size undefined	C
124	ARMONC	Microoncoid-aragonite-limestone - A microoncoid-limestone in which the carbonate is composed dominantly of aragonite. British Geological Survey Research Report RR/99/03, section 3.1 and fig. 6.	R	Microoncoid-aragonite-limestone	GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock, components >50% calcite/aragonite, >50% of Ca-carbonate is aragonite. Allochem dominantly as micro-oncoids, <2mm coated grains with irregular partially overlapping laminae, biogenic structures may be present. Component size undefined.	C
125	ARMSPT	Aragonite-microsparstone - A lime-microsparstone in which the carbonate is composed dominantly of aragonite. British Geological Survey Research Report RR/99/03, section 3.1 and fig. 6.	R	Aragonite-microsparstone	GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock with crystals >50% calcite/aragonite, aragonite >50% of calcium carbonate crystals. Petrological study shows obliterative sparry aragonite 0.032 to 0.004mm (microscopic) in inequant blocky mosaics. Crystal size not defined.	C

Displaying rows 106 to 125 of 3025