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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 546 to 565 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	Q1	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	TRANSFER	DEFINITION_BKING	STATUS
546	DOOPP	Dolerite, olivine-plagioclase-phyric	N	Olivine-plagioclase-phyric dolerite	olivine-plagioclase-phyric	AWEL	15-OCT-03	TMCM	24-AUG-18		Medium-grained, av. between 0.25-2mm normal crystalline extrusive/intrusive rock; qtz <20% or feldspathoid <10% of QAPF, feld >65% plag; TAS SiO2 <52wt%; no textural/genetic implication. Olivine	C
547	DRFTU	Superficial deposit (natural and/or artificial) - In the Rock Classification Scheme, this high level class includes artificially modified ground, and natural superficial deposits. British Geological Survey Research Report RR/99/04.	A	Superficial deposit (natural and/or artificial)		DJLO	05-OCT-06	TMCM	13-MAR-19	I	Not Available	C
548	DRPMA	Doleritic-rock, plagioclase-macrophyric	N	Plagioclase-macrophyric doleritic-rock	plagioclase-macrophyric	AWEL	15-OCT-03	TMCM	24-AUG-18		Medium-grained, av. between 0.25-2mm normal crystalline extrusive/intrusive rock; qtz <20% or feldspathoid <10% of QAPF, feld >65% plagioclase; TAS SiO2 <52wt%; no genetic implication. 5-20% larger >2mm crystals of plagioclase in finer matrix.	C
549	DRPMI	Doleritic-rock, plagioclase-microphyric	N	Plagioclase-microphyric doleritic-rock	plagioclase-microphyric	AWEL	15-OCT-03	TMCM	24-AUG-18		Medium-grained, av. between 0.25-2mm normal crystalline extrusive/intrusive rock; quartz <20% or foid <10% of QAPF, feldspar >65% plag; TAS SiO2 <52wt%; no genetic implication. 5-20% larger but <0.25mm crystals of plagioclase in finer matrix.	C
550	DRPP	Doleritic-rock, plagioclase-phyric	N	Plagioclase-phyric doleritic-rock	plagioclase-phyric	AWEL	15-OCT-03	TMCM	24-AUG-18		Medium-grained, av. between 0.25-2mm normal crystalline extrusive/intrusive rock; qtz <20% or feldspathoid <10% of QAPF, feldspar >65% plagioclase; TAS SiO2 <52wt%; no genetic implication. 5-20% larger crystals of plagioclase in finer matrix.	C
551	DSDST	Sandstone, dolomitic	U	Dolomitic sandstone	dolomitic	DJLO	08-NOV-05	TMCM	31-AUG-18		Not Available	C
552	DSLST	Siltstone, dolomitic	U	Dolomitic siltstone	dolomitic	AWEL	16-AUG-04	TMCM	31-AUG-18		Siliciclastic sedimentary rock with particles >50% from pre-existing siliceous rocks. Particles >50% or predominantly, silt-grade, 0.004 to 0.032mm. 5-20% magnesium carbonate, dolomite component. Composition not defined.	C
553	DSMDST	Silicate-mudstone, dolomitic	U	Dolomitic silicate-mudstone	dolomitic	AWEL	11-JUN-02	TMCM	31-AUG-18		Siliciclastic argillaceous sedimentary rock, particles >50% from pre-existing siliceous rocks. Particles >50% or predominantly mud-grade, <0.032mm. 5-20% magnesium carbonate, dolomite component.	C
554	DSSA	Dolomite-sand - A type of dolomite-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	Dolomite-sand		AWEL	31-MAY-02	TMCM	08-MAR-19		Sediment with crystals >50% magnesium carbonate. Dolomite >50% of magnesium carbonate crystals. Crystals >50% or predominantly sand-grade, 0.032 to 2mm.	C
555	DSSDST	Silicate-sandstone, dolomitic	U	Dolomitic silicate-sandstone	dolomitic	AWEL	11-JUN-02	TMCM	31-AUG-18		Siliciclastic arenaceous sedimentary rock, grains >50% from pre-existing siliceous rocks. Grains >50% or predominantly sand-grade, 0.032 to 2mm. 5-20% magnesium carbonate, dolomite component.	C
556	DSSLTS	Silicate-siltstone, dolomitic	U	Dolomitic silicate-siltstone	dolomitic	AWEL	10-JUN-02	TMCM	31-AUG-18		Siliciclastic argillaceous sedimentary rock, particles >50% from pre-existing siliceous rocks. Particles >50% or predominantly silt-grade, 0.004-0.032mm. 5-20% magnesium carbonate, dolomite component.	C
557	DUN	Dunite - A type of peridotite. In the Rock Classification Scheme, it is a peridotite with olivine >90%, pyroxene <10% and hornblende <10% of olivine + pyroxene + hornblende. British Geological Survey Research Report RR/99/06, section 5.1 and figs. 15, 16.	R	Dunite		GRBA	24-FEB-00	TMCM	22-FEB-19		Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; CI M>90%; olivine >90%, <10% pyroxene, <10% hornblende of Ol+Px+Hl	C
558	DUNC	Dunite, chromite	U	Chromite dunite	chromite	AWEL	17-DEC-04	TMCM	31-AUG-18		Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; CI M>90%; olivine >90%, <10% pyroxene & <10% hornblende of Ol+Px+Hb, chromite 5-20%	C
559	DUNCB	Dunite, chromite-bearing	U	Chromite-bearing dunite	chromite-bearing	AWEL	17-DEC-04	TMCM	31-AUG-18		Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; CI M>90%; olivine >90%, <10% pyroxene & <10% hornblende of Ol+Px+Hb, chromite <5%	C
560	DURAIN	Durain - A type of bituminous-coal, classified according to lithotype. It consists of dark grey to black bands with a dull to slightly greasy lustre. The material is relatively hard compared to other lithotypes, and tends to break into large blocky fragments. Durain may be confused with impure coal which is also dull and hard, but it can be distinguished by its lower density. British Geological Survey Research Report RR/99/03, section 6.1 and fig. 10.	R	Durain		GRBA	24-FEB-00	TMCM	08-MAR-19		Bituminous coal lithotype. Dark grey/black band/layers, dull to greasy lustre. Harder than vitrain/clarain/fusain, breaks into large blocky fragments. Looks similar to impure coal but has lower RD.	C
561	DURI	Duricrust - A type of residual deposit. It is a general term for a hard crust on the surface of, or layer in, the upper horizons of a soil in a semiarid climate. It is an indurated product of surface and near-surface processes formed by cementation or replacement of bedrock, weathering deposits, unconsolidated sediments, soil or other materials produced by low-temperature physiochemical processes. British Geological Survey Research Report RR/99/03, section 13.6; RR/99/04, appendix 2.	R	Duricrust		GRBA	24-FEB-00	TMCM	13-MAR-19		Rudaceous pedogenic sedimentary rock. Clasts >50% from pre-existing siliceous rocks, cemented by calcium carbonate & >50% or predominantly gravel-grade, >2mm. Formed on/in upper soil layers in semi-arid areas. See calcrete/caliche/ferricrete/silcrete.	C
562	ECLOG	Eclogite - A type of metamorphic rock with unknown protolith based on modal composition. In the Rock Classification Scheme, it is defined as a rock composed of more than 70% garnet and jadeitic clinopyroxene (omphacite). Eclogites do not contain plagioclase. They may contain other anhydrous minerals such as quartz, kyanite, orthopyroxene and rutile, together forming no more than 30% of the rock. Eclogites result from metamorphism of basaltic or gabbroic igneous rocks under very low P.H₂0 producing anhydrous mineral assemblages. They define a unique eclogite facies metamorphism, typically reflecting very high pressures although their local occurrence within amphibolite facies rocks suggests they may be formed over a significant range of pressure. British Geological Survey Research Report RR/99/02, section 6.2.	R	Eclogite		GRBA	24-FEB-00	TMCM	22-FEB-19		Red & green crystalloblastic metamorphic rock (protolith undefined); >70% Mg-rich garnet & jadeitic clinopyroxene (omphacite), <30% anhydrous minerals, quartz/kyanite/orthopyroxene/rutile, no plagioclase	C
563	ECR	Exotic crystalline igneous rock - These are the chemically and/or mineralogically exotic crystalline igneous rocks. In the Rock Classification Scheme, this class includes carbonatite, melilitic rock, kalsilitic rock, kimberlite, lamproite, leucitic rock, and lamprophyre. Rocks in these groups have sufficiently unusual mineral and chemical compositions that they are not classified using the modal (QAPF and ultramafic diagrams) or chemical (e.g. TAS) methods by which normal crystalline igneous rocks are classified. Although they comprise only a tiny proportion of all crystalline igneous rocks, the unusual characteristics and distinctive field settings of the exotic igneous rocks means they have attracted a large amount of attention from geologists. British Geological Survey Research Report RR/99/06, section 1.3 and fig. 1.	A	Exotic crystalline igneous rock		AWEL	08-JUN-01	TMCM	22-FEB-19		Crystalline intrusive/extrusive rock, chemically & mineralogically exotic, crystal size not defined, includes very small volume of igneous rocks; carbonatites, melilitic, kalsilitic, leucitic rocks, kimberlites, lamproites, lamprophyres	C
564	EFLUE	Effluent - A type of artifical deposit. It consists of waste liquid flowing from a sewage tank or industrial process etc. British Geological Survey Research Report RR/99/04, appendix 1.	R	Effluent		GRBA	24-FEB-00	TMCM	13-MAR-19		Not Available	C
565	FAREN	Feldspathic-arenite - A type of arenite. In the Rock Classification Scheme, it is defined as shown in British Geological Survey Research Report RR/99/03, section 2.2 and figs. 3, 4.	R	Feldspathic-arenite		GRBA	24-FEB-00	TMCM	08-MAR-19		Siliciclastic arenaceous sedimentary rock <15% matrix (particles<0.032mm). Grains quartz <75%, feldspar >25% & rock fragments <50% of quartz+feldspar+rock fragments.	C

Displaying rows 546 to 565 of 3025