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 181 to 200 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	Q1	Q2	Q3	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	TRANSFER	DEFINITION_BKING	STATUS
181	BAROCM	Basaltic-rock, olivine-clinopyroxene-macrophyric	U	Olivine-clinopyroxene-macrophyric basaltic-rock	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%; quartz <20% or feldspathoid <10% of QAPF, feldspar >65% plagioclase; TAS SiO2 <52wt%. Larger, >2mm crystals of olivine	C
182	BARPM	Basaltic-rock, plagioclase-microphyric	U	Plagioclase-microphyric basaltic-rock	plagioclase-microphyric			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% plagioclase; TAS SiO2 <52wt%. 5-20% plagioclase as phenocrysts, larger but <0.25mm crystals in finer matrix.	C
183	BARPMA	Basaltic-rock, plagioclase-macrophyric	U	Plagioclase-macrophyric basaltic-rock	plagioclase-macrophyric			AWEL	08-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%. 5-20% plagioclase as phenocrysts, larger >2mm crystals in finer matrix.	C
184	BARPOM	Basaltic-rock, plagioclase-olivine-microphyric	U	Plagioclase-olivine-microphyric basaltic-rock	plagioclase	olivine	microphyric	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, feld >65% plag; TAS SiO2 <52wt%. Plagioclase	C
185	BARPP	Basaltic-rock, plagioclase-phyric	U	Plagioclase-phyric basaltic-rock	plagioclase-phyric			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%. Plagioclase 5-20% as phenocrysts, larger crystals in finer matrix.	C
186	BARST	Barite-stone - A type of non-carbonate salt that is composed of particles of the sulphate mineral barite. British Geological Survey Research Report RR/99/03, section 7.1 and fig. 11.	R	Barite-stone				GRBA	24-FEB-00	TMCM	08-MAR-19		Sedimentary rock, crystals >50% non-carbonate salt, sulphates, barite (BaSO4) >50% of sulphate crystals. High RD, orthorhombic crystals colourless to yellow tabular. Form crystals/granular/massive. Crystal size not defined. An evaporite.	C
187	BASBA	Basalt, subalkali - A type of basalt (TAS). In the Rock Classification Scheme, the root name basalt (TAS) may be divided into alkali basalt and subalkali basalt according to the state of silica saturation. If the analysis contains no normative nepheline the rock may be called a subalkali basalt. British Geological Survey Research Report RR/99/06, section 5.2.	U	Subalkali basalt	subalkali			AWEL	22-JUL-02	TMCM	22-FEB-19		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 45-52wt%, Na2O+K2O <5wt%. CIPW norm does not contain nepheline. Includes tholeiite.	C
188	BASCH	Basalt, schistose	U	Schistose basalt	schistose			AWEL	07-OCT-03	TMCM	31-AUG-18		Fine-grained, <0.25mm normal crystalline in-/extrusive rock; CI >35 vol% >40 wt%; qtz <20% or feldspathoid <10% of QAPF, felds >65% plag; TAS SiO2 45-52wt%, Na2O+K2O <5wt%. Splits into <5mm slabs/flakes defined by orientation of platy/prismatic minerals	C
189	BASTUF	Tuff, basalt	U	Basalt tuff	basalt			DJLO	18-MAY-06	TMCM	31-AUG-18	I	Not Available	C
190	BAT	Basalt (TAS) - A type of basaltic-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 basalt (TAS) is as shown in British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17b, 20.	R	Basalt (TAS)				GRBA	24-FEB-00	TMCM	22-FEB-19		Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; TAS SiO2 45-52wt%, Na2O+K2O <5wt%	C
191	BATHL	Basalt, tholeiitic - A subgroup of subalkali basalt. Tholeiitic describes a variety of basalt which is saturated or slightly oversaturated in silica with respect to alkalis so that hypersthene appears in the CIPW norm and hypersthene or pigeonite amongst the modal pyroxenes. Olivine may be present in widely varying amounts, or absent. The term is also used for a suite of rocks showing marked iron-enrichment on AFM diagrams. British Geological Survey Research Report RR/99/06, section 8.4.	U	Tholeiitic basalt	tholeiitic			AWEL	10-JUN-04	TMCM	22-FEB-19		Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; CI >35 vol% >40 wt%; quartz <20% or feldspathoid <10% of QAPF, felds >65% plag; TAS SiO2 45-52wt%, Na2O+K2O <5wt%. Silica saturated so hypersthene in CIPW norm + labradorite +/-glass.	C
192	BATRAT	Basaltic-trachyandesite - A type of trachytic-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 basaltic-trachyandesite is as shown in British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17b, 20.	R	Basaltic-trachyandesite				AWEL	21-MAY-02	TMCM	22-FEB-19		Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; TAS SiO2 49.4-57wt%, Na2O+K2O 5-9.3wt%	C
193	BATTUF	Tuff, basaltic-trachyandesitic	U	Basaltic-trachyandesitic tuff	basaltic	trachyandesitic		AWEL	22-MAY-02	TMCM	31-AUG-18		Lithified clastic material >10% debris formed by volcanic processes, >75vol% pyroclastic fragments, >75% ash <2mm; normal crystalline extrusive rock; TAS SiO2 49.4-57wt%, Na2O+K2O 5-9.3wt%.	C
194	BATUF	Tuff, basaltic	U	Basaltic tuff	basaltic	trachyandesitic		AWEL	22-MAY-02	TMCM	31-AUG-18		Lithified clastic material >10% debris formed by volcanic processes; <25vol% pyroclastic fragments ash <2mm. Quartz <20% or felspathoids <10% of QAPF feldspar >65% plagioclase; TAS SiO2 <52wt%	C
195	BAUX	Bauxite - One of the hydroxides and oxides of alumina. It consists predominantly of hydrated aluminium oxides with iron oxides and other impurities. British Geological Survey Research Report RR/99/03, section 9.2.	R	Bauxite				GRBA	24-FEB-00	TMCM	13-MAR-19		Sediment & sedimentary rock, particles >50% aluminium hydroxides & iron oxide, dominantly clay-grade <0.004mm. Other mineral particles/grains present as impurities.	C
196	BAV	Basalt, variolitic	U	Variolitic basalt	variolitic			DJLO	07-JUL-08	TMCM	31-AUG-18	I	Not Available	C
197	BAVBR	Volcaniclastic-breccia, basaltic	U	Basaltic volcaniclastic-breccia	basaltic			AWEL	22-MAY-02	TMCM	31-AUG-18		Lithified clastic material >10% debris formed by volcanic processes; <25vol% dominantly angular pyroclastic fragments, lapilli/blocks>bombs av. >2mm. Quartz <20% or felspathoids <10% of QAPF feldspar >65% plagioclase; TAS SiO2 <52wt%	C
198	BAVST	Volcaniclastic-sandstone, basaltic	U	Basaltic volcaniclastic-sandstone	basaltic			AWEL	22-MAY-02	TMCM	31-AUG-18		Lithified clastic material >10% debris formed by volcanic processes; <25% pyroclastic fragments, sand grade av. 0.032-2mm. Quartz 20% or feldspathoid 10% of QAPF feldspar 65% plagioclase. TAS SiO2 52wt%	C
199	BBIS	Blackband ironstone - A dark variety of mud ironstone containing siderite clasts and sufficient carbonaceous material (10 to 20%) to make it self-calcining. British Geological Survey Research Report RR/99/03, section 13.	N	Blackband ironstone				TMCM	27-MAY-20			I	Not Available	O
200	BBRCOL	Banded-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	Banded-bright-coal				GRBA	24-FEB-00	TMCM	08-MAR-19		Bituminous coal brightness type. Prefix defines type	C

Displaying rows 181 to 200 of 3025