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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 221 to 240 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	Q1	Q2	Q3	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	TRANSFER	DEFINITION_BKING	STATUS
221	BITCOL	Bituminous-coal - 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. Bituminous-coal is a black, hard and bright coal which typically breaks into rectangular lumps. The bituminous coals can be subdivided in two ways. The first scheme is based on lithotypes which are macroscopically recognisable bands of coal seams. This scheme can be used for describing individual specimens or discrete horizons within a coal seam. Using this scheme, bituminous-coal can be subdivided into vitrain, clarain, fusain, and durain. The second scheme describes the brightness of the coal, and should be used in the field to describe megascopically distinct layers of coal seams. Using this scheme, bituminous-coal can be subdivided into bright-coal, banded-bright-coal, banded-coal, banded-dull-coal, and dull-coal. British Geological Survey Research Report RR/99/03, section 6.1, table 16 and fig. 10.	A	Bituminous-coal				GRBA	24-FEB-00	TMCM	08-MAR-19		Lithified, hard, bright, black mixture of a wide range of plant debris of rarely discernable type. Fine-grained, 0.032-0.25mm organic matrix. 75 to 90% carbon, dry, ash-free. Volatiles 14 to 46%. Largely carbonised, breaks into rectangular lumps.	C
222	BITDP	Bituminous deposit	U	Bituminous deposit	bituminous			AWEL	25-FEB-00	TMCM	31-AUG-18		Sediment with significantly high organic, dominantly of bituminous material, content to noticeably effect the lithology. A tar sand/bitumen lake. Alt. A humic black, hard, bright coal type with 75-90% carbon, dry ash-free & 14-46% volatiles.	C
223	BKLIGN	Black-lignite - A type of lignite. It is dark brown to black with a silky lustre, and much harder than brown-lignite. British Geological Survey Research Report RR/99/03, section 6.1 and fig. 10.	R	Black-lignite				GRBA	24-FEB-00	TMCM	08-MAR-19		Lithified, dark-brown/black, silky lustre mixture of range of plant debris many individually discernable. Fine 0.032-0.25mm organic matrix. 60-75% carbon, dry, ash-free. Volatiles 46-63%. Partly carbonised, cracks/breaks on drying. Hardness >brown-lignite	C
224	BL	Boulders, cobbly [Unlithified Deposits Coding Scheme]	U	Cobbly boulders [UDCS]	cobbly			AWEL	17-DEC-04	TMCM	30-AUG-18		Not Available	C
225	BLBTPH	Block-bomb-tephra - A type of pyroclastic-sediment. In the Rock Classification Scheme, it is a pyroclastic-sediment in which the average size of more than 75% of the pyroclastic fragments exceeds 64 mm. Block-tephra, bomb-block-tephra, block-bomb-tephra, and bomb-tephra are separated according to the relative proportion of blocks (angular fragments exceeding 64 mm) and bombs (rounded fragments exceeding 64 mm): if between 25% and 50% of all pyroclastic fragments bigger than 64 mm are blocks the sediment is block-bomb-tephra. It is the unconsolidated equivalent of agglomerate. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4.	R	Block-bomb-tephra				AWEL	17-DEC-04	TMCM	15-FEB-19		Unimodal, well sorted, unlithified clastic material >10% debris formed by volcanic processes, >75% pyroclastic fragments, >75vol% >64mm blocks	C
226	BLC	Boulders, cobbly, clayey [Unlithified Deposits Coding Scheme]	U	Clayey cobbly boulders [UDCS]	cobbly	clayey		DJLO	20-FEB-09	TMCM	30-AUG-18	I	Not Available	C
227	BLDRUB	Building rubble - A type of artificial deposit. It is waste material derived from construction, usually consisting of brick, concrete, stone and plasterboard with minor amounts of wood and metal. It may be partly organic in content. British Geological Survey Research Report RR/99/04, appendix 1.	R	Building rubble				GRBA	24-FEB-00	TMCM	13-MAR-19		Not Available	C
228	BLFSLG	Blast-furnace slag - A type of artifical deposit. It is semi-fused or fused waste material produced in the metal industry. British Geological Survey Research Report RR/99/04, appendix 1.	R	Blast-furnace slag				GRBA	24-FEB-00	TMCM	13-MAR-19		Not Available	C
229	BLP	Boulders, cobbly, peaty [Unlithified Deposits Coding Scheme]	U	Peaty cobbly boulders [UDCS]	cobbly	peaty		AWEL	17-MAR-04	TMCM	30-AUG-18		Not Available	C
230	BLS	Boulders, cobbly, sandy [Unlithified Deposits Coding Scheme]	U	Sandy cobbly boulders [UDCS]	cobbly	sandy		DJLO	20-FEB-09	TMCM	30-AUG-18	I	Not Available	C
231	BLSTMY	Blastomylonite - A type of mylonitic-rock. Blastomylonites are formed where extensive recrystallisation and mineral growth accompanied deformation, resulting, for example, in ribbon textures in quartzose rocks. British Geological Survey Research Report RR/99/02, section 7.3.	R	Blastomylonite				GRBA	24-FEB-00	TMCM	22-FEB-19		Highly foliated rock with primary cohesion & fine grained (0.032-0.25mm) matrix (protolith & % porphyroblasts undefined) in which extensive recrystallisation & new mineral growth accompanied/post-dated ductile deformation, mylonite variant	C
232	BLTPH	Block-tephra - A type of pyroclastic-sediment. In the Rock Classification Scheme, it is a pyroclastic-sediment in which the average size of more than 75% of the pyroclastic fragments exceeds 64 mm. Block-tephra, bomb-block-tephra, block-bomb-tephra, and bomb-tephra are separated according to the relative proportion of blocks (angular fragments exceeding 64 mm) and bombs (rounded fragments exceeding 64 mm): if more than 75% of all pyroclastic fragments bigger than 64 mm are blocks the sediment is block-tephra. It is the unconsolidated equivalent of pyroclastic-breccia. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4.	R	Block-tephra				GRBA	24-FEB-00	TMCM	15-FEB-19		Unimodal, well sorted, unlithified clastic material >10% debris formed by volcanic processes, >75vol% pyroclastic fragments, >75% >64mm >75% blocks, (angular); a pyroclastic sediment	C
233	BLV	Boulders, cobbly, gravelly [Unlithified Deposits Coding Scheme]	U	Gravelly cobbly boulders [UDCS]	cobbly	gravelly		DJLO	09-JUN-06	TMCM	30-AUG-18	I	Not Available	C
234	BLVC	Boulders, cobbly, gravelly, clayey [Unlithified Deposits Coding Scheme]	U	Clayey gravelly cobbly boulders [UDCS]	cobbly	gravelly	clayey	DJLO	20-FEB-09	TMCM	30-AUG-18	I	Not Available	C
235	BMDST	Mudstone, bituminous	U	Bituminous mudstone	bituminous			AWEL	31-MAY-02	TMCM	31-AUG-18		Sedimentary rock, siliciclastic particles >50% or predominantly mud-grade, <0.032mm. Depositional environment not defined but contains 5-20% bituminous material.	C
236	BMGN	Melagranite, biotite	U	Biotite melagranite	biotite			AWEL	21-MAY-02	TMCM	31-AUG-18		Coarse-grained, av. between 2-16mm, darker than average, M>20% normal crystalline intrusive, rock; quartz 20-60% of QAPF, feldspar 35-90% alkali feldspar, +/-amphibole. 5-20% biotite.	C
237	BNCOAL	Banded-coal - A type of bituminous-coal, classified according to brightness. British Geological Survey Research Report RR/99/03, section 6.1 and fig. 10.	R	Banded-coal				GRBA	24-FEB-00	TMCM	08-MAR-19		Bituminous coal brightness type. Prefix defines type	C
238	BNLIGN	Brown-lignite - A type of lignite. It is brown with a dull or earthy lustre. Many are banded with a fibrous structure. British Geological Survey Research Report RR/99/03, section 6.1 and fig. 10.	R	Brown-lignite				GRBA	24-FEB-00	TMCM	08-MAR-19		Lithified, soft, dull/earthy lustre, brown. Mixture of a range of plant debris many individually discernable. Fine 0.032-0.25mm organic matrix. 60-75%C dry, ash-free. Volatiles 46-63%. Partly carbonised, cracks/breaks on drying. Banded/fibrous structure	C
239	BOCOAL	Bone-coal - A type of impure-coal with clay disseminated throughout the organic-matter. It can be recognised by its dull appearance and grey streak. British Geological Survey Research Report RR/99/03, section 6.1 and fig. 10.	R	Bone-coal				GRBA	24-FEB-00	TMCM	08-MAR-19		Sediment containing heterogeneous mixture of plant debris. <60->90% carbon, dry, ash-free. Volatiles <14->63%. 15-50% ash. Disseminated clay-grade, <0.032mm impurities, approximately equivalent to 50-80% organic matter. Dull with grey streak. .	C
240	BONIN	Boninite - A type of high-Mg rock, classified using the total alkali silica (TAS) classification. The TAS classification may be used if the mineral mode of a normal fine-grained crystalline rock cannot be determined due either to the presence of glass or to the fine-grained nature of the rock. The definition of boninite is as shown in British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17b, 22.	R	Boninite				GRBA	24-FEB-00	TMCM	22-FEB-19		Fine-grained, av. <0.25mm normal crystalline intrusive/extrusive rock; TAS SiO2 >52wt%, Na2O+K2O <1.5wt%, MgO >8wt%, TiO2 <0.5wt%	C

Displaying rows 221 to 240 of 3025