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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 306 to 325 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	Q1	Q2	Q3	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	TRANSFER	DEFINITION_BKING	STATUS
306	CATUFA	Tufa, calcareous - A type of tufa. British Geological Survey Research Report RR/99/04, section 4 and tables 5, 17.	U	Calcareous tufa	calcareous			GRBA	24-FEB-00	TMCM	13-MAR-19		Thin, surficial, soft, spongy, semifriable, crystalline incrustation around the mouth of springs, seeps or streams carrying calcium carbonate in solution & exceptionally as thick deposits along lakeshores. 10 to 50% calcite/aragonite. Tufa-limestone.	C
307	CB	Clay, bouldery [Unlithified Deposits Coding Scheme]	U	Bouldery clay [UDCS]	bouldery			AWEL	09-JAN-02	TMCM	30-AUG-18		Not Available	C
308	CBCOAL	Cannel-boghead-coal - A type of sapropelic-coal. It is a transitional stage between cannel-coal and boghead-coal in which alginite dominates over miospores. British Geological Survey Research Report RR/99/03, section 6.2 and fig. 10.	R	Cannel-boghead-coal				GRBA	24-FEB-00	TMCM	08-MAR-19		A sapropelic coal. Mud-grade, >75% <0.032mm rock. Alginite > miospores, dull black, waxy lustre, homogeneous, conchoidal fracture. Microstratification & siderite common. Microscopically macerals finer, more uniform & intimately mixed than in humic coal.	C
309	CBFEST	Ironstone, carbonaceous	U	Carbonaceous ironstone	carbonaceous			AWEL	31-MAY-02	TMCM	31-AUG-18		Sedimentary rock, no recognisable depositional texture with clasts >50% iron-bearing minerals (>15wt% iron). Clast size not defined. 5-20%visible carbon/humic material.	C
310	CBL	Clay, bouldery, cobbly [Unlithified Deposits Coding Scheme]	U	Cobbly bouldery clay [UDCS]	bouldery	cobbly		DJLO	20-FEB-09	TMCM	30-AUG-18	I	Not Available	C
311	CBP	Clay, bouldery, peaty [Unlithified Deposits Coding Scheme]	U	Peaty bouldery clay [UDCS]	bouldery	peaty		AWEL	17-MAR-04	TMCM	30-AUG-18		Not Available	C
312	CBRMY	Carbonate-rock, mylonitic	U	Mylonitic carbonate-rock	mylonitic			AWEL	21-JAN-02	TMCM	31-AUG-18		Deformed (ductile), intensely foliated rock (protolith, >50% crystals carbonate) with primary cohesion, containing 10-50% porphyroclasts(commonly lensoid with tails indicating shearing sense) in a finer grained dynamically recrystallised matrix	C
313	CBT	Carbonatite - A type of exotic crystalline igneous rock. In the Rock Classification Scheme, it is defined as an igneous rock that contains more than 50% modal primary carbonate. It is known to occur in extrusive, shallow and deep-seated environments. British Geological Survey Research Report RR/99/06, section 6.1 and figs. 25, 26.	A	Carbonatite				GRBA	24-FEB-00	TMCM	22-FEB-19		Exotic crystalline intrusive/extrusive rock; >50% modal primary carbonates of calcium/magnesium/iron/manganese	C
314	CEL	Celestine	-	Celestine				DJLO	13-FEB-07	TMCM	24-AUG-18	I	Not Available	O
315	CELN	Celestine, nodular	-	Nodular Celestine	nodular			DJLO	13-FEB-07	TMCM	24-AUG-18	I	Not Available	O
316	CERMIC	Ceramic waste - A type of artifical deposit. It consists of waste material from the pottery and ceramic industries, commonly comprising partly fired and fired clay products. British Geological Survey Research Report RR/99/04, appendix 1.	R	Ceramic waste				GRBA	24-FEB-00	TMCM	13-MAR-19		Not Available	C
317	CESCH	Schist, chlorite-epidote	U	Chlorite-epidote schist	chlorite	epidote		AWEL	11-JUN-02	TMCM	31-AUG-18		Medium-grained (av. 0.25-2mm), crystalloblastic metamorphic rock (protolith undefined) splits into <5mm slabs/flakes defined by a well developed planar orientation of platy/prismatic minerals; chlorite	C
318	CGHSCH	Schist, clinopyroxene-garnet-hornblende	U	Clinopyroxene-garnet-hornblende schist	clinopyroxene	garnet	hornblende	AWEL	11-JUN-02	TMCM	31-AUG-18		Medium-grained (av. 0.25-2mm), crystalloblastic metamorphic rock (protolith undefined) splits into <5mm slabs/flakes defined by a well developed planar orientation of platy/prismatic minerals; clinopyroxene	C
319	CGR	Coarse-grained normal crystalline rock - In the Rock Classification Scheme, a crystalline rock is coarse-grained if its average crystal size is greater than 2 mm. This group corresponds to the plutonic division of the IUGS scheme. British Geological Survey Research Report RR/99/06, section 1.3 and figs. 1, 3 and 9.	A	Coarse-grained normal crystalline rock				AWEL	08-JUN-01	TMCM	15-FEB-19		Coarse-grained, av. between 2-16mm chemically/mineralogically normal intrusive rock; includes most of volume of coarse-grained igneous rocks	C
320	CH	Clay, shelly [Unlithified Deposits Coding Scheme - Extended]	U	Shelly clay [UDCS-X]	shelly			TMCM	27-MAY-20			I	Not Available	C
321	CHARNR	Rock, charnockitic - A type of coarse-grained normal crystalline rock. The charnockitic suite of rocks is usually characterised by the presence of orthopyroxene (or fayalite plus quartz, though in such assemblages fayalite is invariably altered) and, in many such rocks, perthite, mesoperthite or antiperthite. Primary hydrous minerals are generally absent. They are commonly associated with norites and anorthosites and are linked closely with high-grade metamorphic terrains. Despite being composed largely of feldspar and quartz, charnockitic rocks are generally melanocratic due to very dark feldspar crystals, which also have a characteristically greasy appearance. British Geological Survey Research Report RR/99/06, section 5.1. Examples (root name and qualifier): charnockitic granite, charnockitic monzonite, charnockitic tonalite.	U	Charnockitic rock	charnockitic			GRBA	24-FEB-00	TMCM	22-FEB-19		Coarse-grained, av. between 2-16mm normal crystalline intrusive rock with perthitic feldspars (usually dark coloured), magnetite & pyroxene (usually orthopyroxene, commonly hypersthene or altered fayalite & quartz)	C
322	CHDMTN	Diamicton, chalk-rich	U	Chalk-rich diamicton	chalk-rich			AWEL	10-JUN-02	TMCM	31-AUG-18		Poorly-sorted sediment with wide clast size range, >50% clasts from pre-existing siliceous rocks, <50% >2mm. >20% of clasts chalk (friable porous sedimentary rock, >50% calcite/aragonite particles largely of biogenic origin, usually white & fine-grained).	C
323	CHEMDP	Chemical deposit (natural superficial) - A type of natural superficial deposit. It consists of sediments formed primarily by precipitation from solution or colloidal suspension or by the deposition of insoluble precipitates. British Geological Survey Research Report RR/99/04, appendix 2 and tables 5, 17.	A	Chemical deposit (natural superficial)				GRBA	24-FEB-00	TMCM	13-MAR-19		Not Available	C
324	CHEMWU	Chemical waste - A type of artifical deposit. It consists of waste material and by-products derived from the chemical industry and chemical processes. British Geological Survey Research Report RR/99/04, appendix 1.	R	Chemical waste				GRBA	24-FEB-00	TMCM	13-MAR-19		Not Available	C
325	CHINAW	China clay waste - A type of artifical deposit. It consists of kaolin and waste materials derived from the extraction of kaolin from granitic rocks. British Geological Survey Research Report RR/99/04, appendix 1.	R	China clay waste				GRBA	24-FEB-00	TMCM	13-MAR-19		Not Available	C

Displaying rows 306 to 325 of 3025