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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 326 to 345 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	Q1	Q2	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	TRANSFER	DEFINITION_BKING	STATUS
326	CHLK	Chalk - A friable and porous limestone. British Geological Survey Research Report RR/99/03, section 3.1 and fig. 6.	R	Chalk			GRBA	24-FEB-00	TMCM	08-MAR-19		Friable & porous sedimentary rock with particles >50% calcite/aragonite largely of biogenic origin such as coccoliths. Usually white, particle size not defined but commonly fine-grained, 0.032 to 0.25mm. Limestone.	C
327	CHRMT	Chromitite - A type of rock of restricted mineralogy. In the Rock Classification Scheme, it is a coarse-grained crystalline igneous rock in which chromite exceeds 90% of the mineral mode. British Geological Survey Research Report RR/99/06, section 8.2.	R	Chromitite			GRBA	24-FEB-00	TMCM	22-FEB-19		Coarse-grained, av. between 2-16mm crystalline intrusive rock; chromite >90% +/- feldspar	C
328	CHRT	Chert - A type of siliceous rock. It usually has a porosity of less than 10%. Chert is dense, very hard, and has a vitreous lustre. It can be further classified as opaline-chert and quartzose-chert according to the type of silica. It may not be possible to accurately use this classification without X-ray analysis. In addition, the root names jasper, flint, and agate are available to describe distinctive types. British Geological Survey Research Report RR/99/03, section 8.2 and fig. 12.	R	Chert			GRBA	24-FEB-00	TMCM	08-MAR-19		Sedimentary rock with >50% silica of biogenic or chemical origin, porosity <10% hard, dense with vitreous lustre. Crystals generally <0. 004mm, cryptocrystalline.	C
329	CHS	Clay, shelly, sandy [Unlithified Deposits Coding Scheme - Extended]	U	Sandy shelly clay [UDCS-X]	shelly	sandy	TMCM	27-MAY-20			I	Not Available	C
330	CIR	Crystalline igneous rock - Rock comprised essentially of interlocking crystals and/or glass. In the Rock Classification Scheme, this class includes normal crystalline igneous rock, and exotic crystalline igneous rock. British Geological Survey Research Report RR/99/06, section 1.3 and fig. 1.	A	Crystalline igneous rock			AWEL	08-JUN-01	TMCM	15-FEB-19		Crystalline intrusive/extrusive rock, includes both chemically & mineralogically normal & exotic, crystal size not defined, includes most of the volume of igneous rocks	C
331	CL	Clay, cobbly [Unlithified Deposits Coding Scheme]	U	Cobbly clay [UDCS]	cobbly		AWEL	09-JAN-02	TMCM	30-AUG-18		Not Available	C
332	CLAM	Clay, laminated	U	Laminated clay	laminated		DJLO	02-MAY-06	TMCM	31-AUG-18	I	Not Available	C
333	CLARIN	Clarain - A type of bituminous-coal, classified according to lithotype. It consists of bright to semi-bright bands of finely laminated coal. Clarain generally exhibits an overall silky lustre, and commonly contains fine vitrain bands alternating with a duller attrital groundmass. British Geological Survey Research Report RR/99/03, section 6.1 and fig. 10.	R	Clarain			GRBA	24-FEB-00	TMCM	08-MAR-19		Bituminous coal lithotype. Silky lustre, bright to semi-bright, finely laminate, 0.0 to 1mm layers with fine vitrain bands & duller attrital groundmass.	C
334	CLAY	Clay [Obsolete code: use C]	N	Clay			GRBA	24-FEB-00	TMCM	02-OCT-20		Not Available	O
335	CLB	Clay, cobbly, bouldery [Unlithified Deposits Coding Scheme]	U	Bouldery cobbly clay [UDCS]	cobbly	bouldery	DJLO	20-FEB-09	TMCM	30-AUG-18	I	Not Available	C
336	CLBST	Calcite-boundstone - A lime-boundstone in which the carbonate is composed dominantly of calcite. British Geological Survey Research Report RR/99/03, section 3.1 and fig. 6.	R	Calcite-boundstone			GRBA	24-FEB-00	TMCM	08-MAR-19		Sedimentary rock with components >50% calcite/aragonite. Calcite >50% of calcium carbonate. Original components bound & encrusted by action of plants/animals in growth position (reef limestone). Component size not defined.	C
337	CLCRET	Calcrete - A type of duricrust. It is a conglomerate consisting of surficial sand and gravel cemented into a hard mass by calcium carbonate. British Geological Survey Research Report RR/99/03, section 13.6; RR/99/04, appendix 2. Synonym: caliche.	R	Calcrete			GRBA	24-FEB-00	TMCM	13-MAR-19		Pedogenic sedimentary conglomerate rock, with clasts from pre-existing rocks cemented by calcium carbonate. Clasts >50% >2mm, & significant 0.032-2mm grains. Formed on/in upper soil layers in semi-arid areas. See duricrust/caliche/ferricrete/silcrete.	C
338	CLFST	Calcite-framestone - A lime-framestone in which the carbonate is composed dominantly of calcite. British Geological Survey Research Report RR/99/03, section 3.1 and fig. 6.	R	Calcite-framestone			GRBA	24-FEB-00	TMCM	08-MAR-19		Sedimentary rock with components >50% calcite/aragonite. >50% of calcium carbonate is calcite. Fine, 0.032 to 0.25mm sediment fills cavities in framework of colonies of shells or skeletons.	C
339	CLGST	Calcite-grainstone - A lime-grainstone in which the carbonate is composed dominantly of calcite. British Geological Survey Research Report RR/99/03, section 3.1 and fig. 6.	R	Calcite-grainstone			GRBA	24-FEB-00	TMCM	08-MAR-19		Grain-supported sedimentary rock with components >50% calcite/aragonite. >50% of calcium carbonate is calcite, <15% matrix, (particles <0.032mm). Grain size not defined.	C
340	CLGV	Gravel, clayey [Obsolete code: use VC]	U	Clayey gravel	clayey		GRBA	24-FEB-00	TMCM	02-OCT-20		Not Available	O
341	CLINK	Clinker - A type of artifical deposit. It consists of semi-fused or fused hard foundry slag which is the stony residue from burnt coal. British Geological Survey Research Report RR/99/04, appendix 1.	R	Clinker			GRBA	24-FEB-00	TMCM	13-MAR-19		Not Available	C
342	CLKA	Chalk, argillaceous	U	Argillaceous chalk	argillaceous		AWEL	02-OCT-02	TMCM	31-AUG-18		Friable & porous sedimentary rock with particles >50% calcite/aragonite largely of biogenic origin i.e coccoliths Usually white, fine-grained, particles 0.032-0.25mm. 5-20% particles, <0.032mm from pre-existing siliciclastic rocks. A limestone	C
343	CLKCR	Chalk, clay-rich	U	Clay-rich chalk	clay-rich		AWEL	02-OCT-02	TMCM	31-AUG-18		Friable & porous sedimentary rock with components >50% calcite/aragonite largely of biogenic origin i.e coccoliths Usually white, fine-grained, particles 0.032-0.25mm. >20% of <0.004mm particles from pre-existing siliciclastic rocks. A limestone.	C
344	CLKGM	Chalk, marly, glauconitic	U	Glauconitic marly chalk	glauconitic	marly	AWEL	02-OCT-02	TMCM	31-AUG-18		Friable & porous sedimentary rock with particles >50% calcite/aragonite largely of biogenic origin i.e coccoliths. Usually white, particles 0.032-0.25mm. Particles of marl (limey/silty/clay) & lesser green glauconite both 5-20%. Argillaceous limestone.	C
345	CLKM	Chalk, marly	U	Marly chalk	marly		AWEL	02-OCT-02	TMCM	31-AUG-18		Friable & porous sedimentary rock with particles >50% calcite/aragonite largely of biogenic origin i.e coccolith Usually white, fine-grained, particles 0.032-0.25mm. 5-20% particles of marl, (Limey/silty/clay) composition. An argillaceous limestone.	C

Displaying rows 326 to 345 of 3025