Vocabularies — view dictionary terms

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 241 to 260 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	Q1	Q2	Q3	Q4	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	TRANSFER	DEFINITION_BKING	STATUS
241	BORXST	Borax-stone - A type of non-carbonate salt that is composed of particles of the borate mineral borax. British Geological Survey Research Report RR/99/03, section 7.1 and fig. 11.	R	Borax-stone					GRBA	24-FEB-00	TMCM	08-MAR-19		Sedimentary rock >50% non-carbonate salt, borate dominanlty borax (Na2B4O7.10H2O) in white prismatic crystals tinged blue/green/grey. Crystal size not defined. An evaporite.	C
242	BOTPH	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 less than 25% of all pyroclastic fragments bigger than 64 mm are blocks the sediment is bomb-tephra. It is the unconsolidated equivalent of agglomerate. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4.	R	Bomb-tephra					GRBA	24-FEB-00	TMCM	15-FEB-19		Unimodal, well sorted, unconsolidated clastic material >10% debris formed by volcanic processes, >75vol% pyroclastic fragments, >75% >64mm >75% bombs, (rounded); a pyroclastic sediment	C
243	BP	Boulders, peaty [Unlithified Deposits Coding Scheme]	U	Peaty boulders [UDCS]	peaty				AWEL	17-MAR-04	TMCM	30-AUG-18		Not Available	C
244	BPEAT	Peat, basin	-	Basin peat					TMCM	29-MAY-20			I	Not Available	O
245	BRCOAL	Bright-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	Bright-coal					GRBA	24-FEB-00	TMCM	08-MAR-19		Bituminous coal brightness type. Prefix defines type	C
246	BRCQ	Breccia, quartzite	U	Quartzite breccia	quartzite				AWEL	08-JUN-04	TMCM	31-AUG-18		Siliciclastic arenaceous protolith >50vol% pre-existing siliceous rock clasts. Clasts >50% or dominantly sand-grade, 0.032-2mm. qtz clasts & qtz cement. Deformed (brittle), no foliation or cohesion, >30% frags coarser than matrix, rotation/granulation	C
247	BREC	Breccia - A type of silicate-conglomerate. In the Rock Classification Scheme, this term may be used for conglomerates made of sharply angular clasts. British Geological Survey Research Report RR/99/03, section 2.1 and fig. 2. Synonym: angular silicate-conglomerate.	N	Breccia					GRBA	24-FEB-00	TMCM	08-MAR-19		Deformed (brittle), no foliation or cohesion, >30% fragments coarser than matrix, some rotation/granulation. No protolith defined.	C
248	BRECSL	Breccia, slide	U	Slide breccia	slide				DJLO	15-DEC-06	TMCM	30-AUG-18	I	Not Available	C
249	BRICK	Brick - A type of artifical deposit. It consists of clay kneaded, moulded, and baked (fired) or sun-dried, usually as small, rectangular blocks. British Geological Survey Research Report RR/99/04, appendix 1.	R	Brick					GRBA	24-FEB-00	TMCM	13-MAR-19		Not Available	C
250	BRMA	Basaltic-rock, macroporphyritic (unclassed)	U	Macroporphyritic basaltic-rock (unclassed)	macroporphyritic				AWEL	15-OCT-03	TMCM	31-AUG-18		Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; CI >35 vol% >40 wt%; quartz <20% or feldspathoid <10% of QAPF, feld >65% plagioclase; TAS SiO2 <52wt%. Phenocrysts, larger, >2mm crystals in finer matrix, size, composition undefined.	C
251	BRMI	Basaltic-rock, microporphyritic (unclassed)	U	Microporphyritic basaltic-rock (unclassed)	microporphyritic				AWEL	15-OCT-03	TMCM	31-AUG-18		Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; CI >35 vol% >40 wt%; quartz <20% or feldspathoid <10% of QAPF, feldspar >65% plagioclase; TAS SiO2 <52wt%. Larger but <0.25mm crystals in finer matrix, amount & composition undefined.	C
252	BRPOCM	Basaltic-rock, plagioclase-olivine-clinopyroxene-macrophyric	U	Plagioclase-olivine-clinopyroxene-macrophyric basaltic-rock	plagioclase	olivine	clinopyroxene	macrophyric	AWEL	08-OCT-03	TMCM	31-AUG-18		Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; CI >35 vol% >40 wt%; qtz <20% or feldspathoid <10% of QAPF, feldspar >65% plag; TAS SiO2 <52wt%. Pagioclase2mm crystals of in finer matrix	C
253	BRPOCP	Basaltic-rock, plagioclase-olivine-clinopyroxene-phyric	U	Plagioclase-olivine-clinopyroxene-phyric basaltic-rock	plagioclase	olivine	clinopyroxene	phyric	AWEL	19-MAR-04	TMCM	31-AUG-18		Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; CI >35 vol% >40 wt%; quartz <20% or feldspathoid <10% of QAPF, feldspar >65% plagioclase; TAS SiO2 <52wt%. Plagioclase	C
254	BS	Boulders, sandy [Unlithified Deposits Coding Scheme]	U	Sandy boulders [UDCS]	sandy				AWEL	17-DEC-04	TMCM	30-AUG-18		Not Available	C
255	BSC	Boulders, sandy, clayey [Unlithified Deposits Coding Scheme]	U	Clayey sandy boulders [UDCS]	sandy	clayey			DJLO	20-FEB-09	TMCM	30-AUG-18	I	Not Available	C
256	BSN	Basanite - A type of tephritic-rock. In the Rock Classification Scheme, this name is used for a fine-grained crystalline igneous rock when the modal mineralogy is available, and the mineral mode plots in field 14 of the quartz - alkali feldspar - plagioclase - feldspathoid (QAPF) diagram. Basanite and tephrite are distinguished by the amount of olivine in the CIPW norm: if normative olivine exceeds 10% the rock is basanite. British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17a, 19.	R	Basanite					GRBA	24-FEB-00	TMCM	22-FEB-19		Fine-grained, av.<0.25mm normal crystalline extrusive/intrusive rock; feldspathoids 10-60% of QAPF, feldspar >90% plagioclase, olivine >10% TAS SiO2 41-49.4wt%, Na2O+K2O 3-9.4wt%	C
257	BSNAN	Basanite, analcime	U	Analcime basanite	analcime				AWEL	07-OCT-03	TMCM	31-AUG-18		Fine-grained, av.<0.25mm normal crystalline extrusive/intrusive rock; feldspathoids 10-60% of QAPF, feldspar >90% plagioclase, olivine >10% TAS SiO2 41-49.4wt%, Na2O+K2O 3-9.4wt%. 5-20% analcime.	C
258	BSNBT	Basanite, biotite	U	Biotite basanite	biotite				AWEL	26-FEB-01	TMCM	31-AUG-18		Fine-grained, av.<0.25mm normal crystalline extrusive/intrusive rock; feldspathoids 10-60% of QAPF, feldspar >90% plagioclase, olivine >10% TAS SiO2 41-49.4wt%, Na2O+K2O 3-9.4wt%. 5-20% biotite.	C
259	BSNFDI	Basanitic-foidite - A type of foiditic-rock. In the Rock Classification Scheme, this name is used for a fine-grained crystalline igneous rock when the modal mineralogy is available, and the mineral mode plots in field 15b of the quartz - alkali feldspar - plagioclase - feldspathoid (QAPF) diagram. Basanitic-foidite and tephritic-foidite are distinguished by the amount of olivine in the CIPW norm: if normative olivine exceeds 10% the rock is basanitic-foidite. British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17a, 19.	R	Basanitic-foidite					GRBA	24-FEB-00	TMCM	22-FEB-19		Fine-grained, av.<0.25mm normal crystalline extrusive/intrusive rock; feldspathoids 60-90% of QAPF, feldspar >50% plagioclase, olivine >10%+B35	C
260	BSNT	Basanite (TAS) - A type of tephritic-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 basanite (TAS) is as shown in British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17b, 20.	R	Basanite (TAS)					GRBA	24-FEB-00	TMCM	22-FEB-19		Fine-grained, av.<0.25mm normal crystalline extrusive/intrusive rock; olivine >10%; TAS SiO2 41-49.4wt%, Na2O+K2O 3-9.4wt%	C

Displaying rows 241 to 260 of 3025