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 726 to 745 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	Q1	Q2	Q3	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	DEFINITION_BKING	STATUS
726	GNLG	Leucogranite, granophyric	U	Granophyric leucogranite	granophyric			GRBA	24-FEB-00	TMCM	31-AUG-18	Coarse-grained, av. between 2-16mm normal crystalline, (texture, micrographic intergrowth of quartz and alkali feldspar) intrusive rock; CI M 0-5%; quartz 20-60% of QAPF, feldspar 35-90% alkali feldspar +/- mica/amphibole	C
727	GNLLI	Leucogranite, lithium-rich	U	Lithium-rich leucogranite	lithium-rich			GRBA	24-FEB-00	TMCM	31-AUG-18	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; lighter than average M<5; quartz 20-60% of QAPF, feldspar 35-90% alkali feldspar, lithium minerals (mica/feldspar) >20% of rock, +/- amphibole	C
728	GNLP	Leucogranite, pegmatitic	U	Pegmatitic leucogranite	pegmatitic			AWEL	11-JUN-02	TMCM	31-AUG-18	Normal crystalline intrusive rock, av. 2-16mm. lighter than average, M<5%; quartz 20-60% of QAPF, feldspar 35-90% alkali feldspar +/- mica/amph. Regions of very coarse, >16mm crystals of any composition, commonly leucogranite in veins/vugs/void filling.	C
729	GNLPF	Leucogranite, foliated-pegmatitic	U	Foliated-pegmatitic leucogranite	foliated	pegmatitic		AWEL	10-JUN-02	TMCM	31-AUG-18	Leucogranite protolith, crystals 2-16mm, lighter than average, M<5%; <5mm planar structure from preferred orientation of platy/prismatic mins. Regions of very coarse, >16mm crystals of any composition, commonly leucogranite in veins/vugs/void filling	C
730	GNM	Melagranite	N	Melagranite				AWEL	09-FEB-01	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, +/- mica/amphibole.	C
731	GNMBF	Granite, foliated-muscovite-biotite	U	Foliated-muscovite-biotite granite	foliated	muscovite	biotite	AWEL	21-MAY-02	TMCM	31-AUG-18	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; quartz 20-60% of QAPF, feldspar 35-90% alkali feldspar +/- amphibole. <5mm planar texture/structure from preferred orientation of platy/prismatic minerals. Muscovite	C
732	GNMFB	Melagranite, foliated-biotite	U	Foliated-biotite melagranite	foliated	biotite		AWEL	15-JAN-02	TMCM	31-AUG-18	Mela-granite protolith, coarse-grained, 2-16mm, darker than ave., M>20% normal crystalline intrusive, rock; qtz 20-60% of QAPF, feld 35-90% alkali feld, +/-amph. 5-20% biotite. <5mm planar structure from preferred orientation of platy/prismatic minerals.	C
733	GNP	Granite, porphyritic	U	Porphyritic granite	porphyritic			GRBA	24-FEB-00	TMCM	31-AUG-18	Coarse-grained, av. between 2-16mm porphyritic textured intrusive normal crystalline rock; quartz 20-60% of QPAF, feldspar 35-90% alkali feldspar, +/- mica/amphibole, phenocryst type not defined	C
734	GNR	Granitic-rock - A type of coarse-grained normal crystalline rock. In the Rock Classification Scheme, this class includes granite, granodiorite, tonalite, and similar rocks. The term may be used as a field classification when an accurate mineral mode from thin section examination is not available. British Geological Survey Research Report RR/99/06, section 5.1 and figs. 9, 10.	A	Granitic-rock				GRBA	24-FEB-00	TMCM	22-FEB-19	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; quartz 20-60%, feldspar 40-80% of QAPF, feldspar, species not defined, +/- mica/amphibole	C
735	GNRF	Granitic-rock, foliated	U	Foliated granitic-rock	foliated			AWEL	13-MAR-01	TMCM	31-AUG-18	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; quartz 20-60%, feldspar 40-80% of QAPF, feldspar, species not defined, +/- mica/amphibole. <5mm planar texture/structure from preferred orientation of platy/prismatic minerals.	C
736	GNRN	Granitic-rock, nebulose	U	Nebulose granitic-rock	nebulose			AWEL	30-JUN-03	TMCM	31-AUG-18	Extreme variety of migmatitic rocks, contain ghostly relicts of pre-existing rocks. Granitic-rock protolith normal crystalline intrusive rock; quartz 20-60%, feldspar 40-80% of QAPF, feldspar, species not defined, +/- mica/amphibole.	C
737	GNSDI	Diorite, gneissose	U	Gneissose diorite	gneissose			AWEL	21-MAY-02	TMCM	31-AUG-18	Medium-coarse 0.25-16mm, >5mm irregular/discontinuous layers of contrasting texture/grainsize/mineralogy, preferred min orientation.Diorite protolith, normal crystalline intrusive rock; quartz <5% of QAPF, feld >90% plag (<50% An), +/-mica/Px/amph/olivine	C
738	GNSGA	Granite, gneissose-augen	U	Gneissose-augen granite	gneissose	augen		AWEL	21-MAY-02	TMCM	31-AUG-18	Medium-coarse grained 0.25-16mm, >5mm irregular/discontinuous layers of contrasting grain size/mineralogy with preferred mineral orientation; common. Folia wrap round eyeshaped/lensoid mineral/aggregates. Granite protolith.	C
739	GNSH	Granite, sheared	U	Sheared granite	sheared			AWEL	23-JAN-02	TMCM	31-AUG-18	Coarse-grained, 2-16mm normal crystalline intrusive rock; qtz 20-60% of QAPF, feldspar 35-90% alkali feldspar +/- mica/amphibole. Relative movement of contiguous parts parallel to their plane of contact. May cause cataclasis, granulation, mylonitisation.	C
740	GNSKA	Gneiss, k-feldspar-augen	U	K-feldspar-augen gneiss	k-feldspar	augen		AWEL	05-MAR-01	TMCM	31-AUG-18	Med-coarse-grained (av. 0.25-16mm) crystalloblastic metamorphic rock (protolith undefined) >5mm irreg layers of contrasting grain size/mineralogy, preferred min orientation common, folia wrap round eyeshaped/lensoid min/aggregates, dominantly K-feldspar	C
741	GNSKP	Gneiss, microcline-plagioclase	U	Microcline-plagioclase gneiss	microcline	plagioclase		AWEL	11-JUN-02	TMCM	31-AUG-18	Med-coarse-grained (av. 0.25-16mm) crystalloblastic metamorphic rock (protolith undefined) with >5mm irregular/discontinuous layers defined by contrasting text/grainsize/mineralogy, preferred mineral orientation common. Plagioclase>microcline, both 5-20%	C
742	GNSMF	Gneiss, mafic	U	Mafic gneiss	mafic			AWEL	26-FEB-01	TMCM	31-AUG-18	Med-coarse-grained (av. 0.25-16mm) crystalloblastic metamorphic rock (protolith undefined) with >5mm irregular/discontinuous layers defined by contrasting text/grainsize/mineralogy,well developed preferred mineral orientation common. 35-90% mafic minerals	C
743	GNSMI	Gneiss, micaceous	U	Micaceous gneiss	micaceous			AWEL	26-FEB-01	TMCM	31-AUG-18	Medium to coarse-grained (av. 0.25-16mm) crystalloblastic metamorphic rock (protolith undefined) with >5mm irregular/discontinuous layers defined by contrasting texture/grainsize/mineralogy,well developed preferred mineral orientation common. 5-20% micas.	C
744	GNSN	Gneiss, nebulitic	U	Nebulitic gneiss	nebulitic			AWEL	07-MAR-01	TMCM	31-AUG-18	Med-coarse-grained (av. 0.25-16mm) crystalloblastic meta rock (protolith undefined) >5mm irregular/discontinuous layers defined by contrasting text/grainsize/mineralogy, preferred mineral orientation common.Contains ghostly relicts of pre-existing rocks.	C
745	GNSPL	Gneiss, plagioclase	U	Plagioclase gneiss	plagioclase			AWEL	13-MAR-01	TMCM	31-AUG-18	Med-coarse-grained (av. 0.25-16mm) crystalloblastic metamorphic rock (protolith undefined) with >5mm irregular/discontinuous layers defined by contrasting texture/grainsize/mineralogy,well developed preferred mineral orientation common. 5-20% plagioclase	C

Displaying rows 726 to 745 of 3025