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 581 to 600 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	Q1	Q2	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	DEFINITION_BKING	STATUS
581	FDGBR	Foid-gabbroic-rock - A type of coarse-grained normal crystalline rock. In the Rock Classification Scheme, this class includes analcime-gabbro, nepheline-monzogabbro 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	Foid-gabbroic-rock			GRBA	24-FEB-00	TMCM	22-FEB-19	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; feldspathoids 10-60% of QAPF, feldspar >50% plagioclase (>50% An) +/- mica/amphibole/pyroxene/olivine	C
582	FDI	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 15 of the quartz - alkali feldspar - plagioclase - feldspathoid (QAPF) diagram. British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17a, 19.	R	Foidite			GRBA	24-FEB-00	TMCM	22-FEB-19	Fine-grained, av. <0.25mm normal crystalline intrusive rock; feldspathoids >90% of QAPF +/- feldspar	C
583	FDIO	Foid-diorite - A type of foid-dioritic-rock. In the Rock Classification Scheme, it is a coarse-grained crystalline igneous rock whose mineral mode plots in field 14 of the quartz - alkali feldspar - plagioclase - feldspathoid (QAPF) diagram. Foid-diorite and foid-gabbro are distinguished according to the average composition of their plagioclase: if An (the anorthite content of plagioclase) is less than 50% the rock is foid-diorite. British Geological Survey Research Report RR/99/06, section 5.1 and figs. 9, 11, 12.	R	Foid-diorite			AWEL	04-OCT-01	TMCM	22-FEB-19	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; feldspathoids 10-60% of QAPF, feldspar >90% plagioclase (<50% An) +/- mica/pyroxene/amphibole/olivine	C
584	FDIR	Foid-dioritic-rock - A type of coarse-grained normal crystalline rock. In the Rock Classification Scheme, this class includes nepheline-diorite 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	Foid-dioritic-rock			GRBA	24-FEB-00	TMCM	22-FEB-19	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; feldspathoids 10-60% of QAPF, feldspar >50% plagioclase (<50% An) +/- mica/pyroxene/amphibole/olivine	C
585	FDIT	Foidite (TAS) - A type of foiditic-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 foidite (TAS) is as shown in British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17b, 20.	R	Foidite (TAS)			GRBA	24-FEB-00	TMCM	22-FEB-19	Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; TAS SiO2 <52.5wt%, Na2O+K2O 0->15wt%	C
586	FDO	Foidolite - A type of foidolitic-rock. In the Rock Classification Scheme, it is a coarse-grained crystalline igneous rock whose mineral mode plots in field 15 of the quartz - alkali feldspar - plagioclase - feldspathoid (QAPF) diagram. This field contains rocks in which the light-coloured minerals are almost entirely feldspathoids. The fine-grained equivalent is foidite. British Geological Survey Research Report RR/99/06, section 5.1 and figs. 9, 11, 12.	R	Foidolite			GRBA	24-FEB-00	TMCM	22-FEB-19	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; feldspathoids >60%, feldspar <40% of QAPF, +/- mica/pyroxene	C
587	FDOLO	Dolostone, ferruginous	U	Ferruginous dolostone	ferruginous		DJLO	03-APR-06	TMCM	31-AUG-18	Not Available	C
588	FDOR	Foidolitic-rock - A type of coarse-grained normal crystalline rock. In the Rock Classification Scheme, this class includes leucitolite and nephelinolite. 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	Foidolitic-rock			GRBA	24-FEB-00	TMCM	22-FEB-19	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; feldspathoids >60%, feldspar <40%of QAPF, +/- mica/pyroxene	C
589	FDSY	Foid-syenite - A type of foid-syenitic-rock. In the Rock Classification Scheme, it is a coarse-grained crystalline igneous rock whose mineral mode plots in field 11 of the quartz - alkali feldspar - plagioclase - feldspathoid (QAPF) diagram. British Geological Survey Research Report RR/99/06, section 5.1 and figs. 9, 11, 12.	R	Foid-syenite			GRBA	24-FEB-00	TMCM	22-FEB-19	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; feldspathoids 10-60% of QAPF, feldspar >90% alkali feldspar +/- mica/amphibole	C
590	FDSYR	Foid-syenitic-rock - A type of coarse-grained normal crystalline rock. In the Rock Classification Scheme, this class includes nepheline-syenite, nepheline-monzosyenite 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	Foid-syenitic-rock			GRBA	24-FEB-00	TMCM	22-FEB-19	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; feldspathoids 10-60% of QAPF, feldspar >50% alkali feldspar +/- mica/amphibole	C
591	FEBST	Iron-boundstone - A type of ironstone, classified on the basis of its biogenic texture. It is an ironstone in which the original components were bound and encrusted together by the action of plants and animals in the position of growth. British Geological Survey Research Report RR/99/03, section 5.2, table 14 and fig. 9.	R	Iron-boundstone			GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock (>15 wt% iron) with >50% iron-bearing minerals (15wt% iron). Original components bound & encrusted by action of plants/animals in growth position, (reefs). Particle size not defined.	C
592	FECRTE	Ferricrete - A type of duricrust. It is a conglomerate consisting of surficial sand and gravel cemented into a hard mass by iron oxide derived from the oxidation of percolating solutions of iron salts. British Geological Survey Research Report RR/99/03, section 13.6; RR/99/04, appendix 2. Synonyms: iron laterite, iron pan.	R	Ferricrete			GRBA	24-FEB-00	TMCM	13-MAR-19	Rudaceous pedogenic sedimentary rock with clasts >50% from pre-existing siliceous rocks.Clasts rounded, >50% or predominantly gravel-grade, >2mm. Cemented by iron oxide derived from oxidation of percolating solutions of iron salts. A duricrust/Iron pan	C
593	FEFBT	Ferroan-carbonatite - A type of carbonatite. In the Rock Classification Scheme, this term may be used when a modal classification is possible. In a ferroan-carbonatite, the main carbonate mineral is ferroan dolomite, ankerite or siderite. These can be distinguished from other carbonates by stain tests. British Geological Survey Research Report RR/99/06, section 6.1 and fig. 25. See also: ferrocarbonatite.	R	Ferroan-carbonatite			AWEL	10-JUN-02	TMCM	22-FEB-19	Exotic crystalline rock; >50% modal primary carbonates of calcium/magnesium/iron/manganese, dominantly ferroan dolomite/ankerite/siderite; ferrocarbonatite	C
594	FEGST	Iron-grainstone - A type of ironstone, classified on the basis of its depositional texture. It is a grain-supported ironstone with little matrix (mud-grade material smaller than 32 µm). British Geological Survey Research Report RR/99/03, section 5.2, table 14 and fig. 9.	R	Iron-grainstone			GRBA	24-FEB-00	TMCM	08-MAR-19	Grain-supported sedimentary rock (>15wt% iron) with grains >50% iron-bearing minerals (>15wt% iron). <15% matrix, (particles <0.032mm), Grain size not defined.	C
595	FEGV	Iron-gravel - A type of iron-sediment. In the Rock Classification Scheme, it is one in which over 25% of clasts are 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 5.1, table 13 and fig. 9. See also: silicate-gravel.	R	Iron-gravel			GRBA	24-FEB-00	TMCM	08-MAR-19	Sediment (>15wt% iron) with grains >50% iron-bearing minerals (15wt% iron). Clasts >50% or predominantly gravel-grade, >2mm.	C
596	FELAB	Felsite, albite	U	Albite felsite	albite		AWEL	01-SEP-03	TMCM	31-AUG-18	Generally light coloured fine-grained, aphanitic (>75% crystals <0.25mm) normal crystalline rock; quartz <60% or feldspathoids <10% QAPF, remainder dominantly feldspar. 5-20% albite.	C
597	FELAF	Felsite, appinitic-foliated	U	Foliated appinitic felsite	appinitic	foliated	AWEL	30-JUN-03	TMCM	31-AUG-18	Light coloured fine-grained, (>75% crystals <0.25mm) normal cryslline rock; qtz <60% or feldspath <10% QAPF, remainder mainly feld. Coarse-grained euhedral hornb in anhedral-poikilitic feld matrix. <5mm planar structure, preferred orientation of minerals	C
598	FELAP	Felsite, appinitic	U	Appinitic felsite	appinitic		AWEL	30-JUN-03	TMCM	31-AUG-18	Generally light coloured fine-grained, aphanitic (>75% crystals <0.25mm) normal crystalline rock; quartz <60% or feldspathoids <10% QAPF, remainder dominantly feldspar. With coarse-grained euhedral hornblende in anhedral to poikilitic feldspar matrix.	C
599	FELPB	Felsite, porphyritic-brecciated	U	Brecciated-porphyritic felsite	porphyritic	brecciated	AWEL	10-MAR-04	TMCM	31-AUG-18	Generally leucocratic, aphanitic (>75% crystals <0.25mm), phyric normal crystalline rock; qtz <60% or foid <10% QAPF, remainder dominantly feld. Deformed (brittle), unfoliated rock; no primary cohesion, >30% angular/rounded frags coarser than the matrix	C
600	FELQAP	Felsite, quartz-albite-phyric	U	Quartz-albite-phyric felsite	quartz-albite-phyric		AWEL	01-SEP-03	TMCM	31-AUG-18	Generally light coloured fine-grained, aphanitic (>75% crystals <0.25mm) normal crystalline rock; qtz <60% or foids <10% QAPF, remainder dominantly feldspar. Quartz	C

Displaying rows 581 to 600 of 3025