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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 2246 to 2265 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	Q1	Q2	Q3	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	DEFINITION_BKING	STATUS
2246	PGFQB	Pegmatite, brecciated-feldspar-quartz	U	Brecciated-feldspar-quartz pegmatite	brecciated	feldspar	quartz	AWEL	21-MAY-02	TMCM	31-AUG-18	Not Available	C
2247	PGFQF	Pegmatite, foliated-feldspar-quartz	U	Foliated-feldspar-quartz pegmatite	foliated	feldspar	quartz	AWEL	21-MAY-02	TMCM	31-AUG-18	Not Available	C
2248	PGGN	Granite, pegmatitic	U	Pegmatitic granite	pegmatitic			AWEL	21-MAY-02	TMCM	31-AUG-18	Coarse-grained, av. between 2-16mm normal crystalline intrusive rock containing markedly coarser (>16mm) regions of the same composition; quartz 20-60% of QAPF, feldspar 35-90% alkali feldspar, +/- mica/amphibole	C
2249	PGNSS	Paragneiss - A type of metasedimentary rock based on textural attributes. In the Rock Classification Scheme, it is defined as a medium- to coarse-grained inhomogeneous rock, commonly with a well-developed preferred orientation of constituent minerals, and characterised by a coarse foliation or layering that is more widely spaced, irregular or discontinuous than that in a schist. Adjacent layers generally exhibit contrasting texture, grain size, and mineralogy. However, there is a continuum between schists and gneisses, with factors such as the spacing of the foliation and the degree of contrast between adjacent layers contributing to the assignment of a rock to either category. Gneiss is distinguished from schist where some layers are over 5 mm thick. Gneisses generally occur in areas of middle to upper amphibolite or granulite facies metamorphism and can encompass a wide range of lithologies. Note the para- prefix indicates a rock that is thought to have a sedimentary protolith, in contrast with orthogneiss which has an igneous protolith, and gneiss where the nature of the protolith is not defined. British Geological Survey Research Report RR/99/02, section 3.3.	R	Paragneiss				GRBA	24-FEB-00	TMCM	22-FEB-19	Medium to coarse-grained (av. 0.25-16mm), crystalloblastic meta-sedimentary rock; (protolith undefined); >5mm irregular/discontinuous layers defined by variation in texture/grain size/mineralogy, well developed preferred mineral orientation common	C
2250	PGPHN	Phosphorite, pebble-grade	U	Pebble-grade phosphorite	pebble-grade			AWEL	10-JUN-02	TMCM	31-AUG-18	Not Available	C
2251	PGRNF	Paragranofels - A type of metasedimentary rock based on textural attributes. It lacks any obvious foliation and layering and is commonly characterised by a granoblastic texture. A granofels can occur at any metamorphic grade with a range of lithologies. Note the para- prefix indicates a rock that is thought to have a sedimentary protolith, in contrast with orthogranofels which has an igneous protolith, and granofels where the nature of the protolith is not defined. British Geological Survey Research Report RR/99/02, section 3.3.	R	Paragranofels				GRBA	24-FEB-00	TMCM	22-FEB-19	Granoblastic textured meta-sedimentary rock (grain size, mineralogy, protolith undefined), lacking any obvious foliation, qualifier essential; replaces granulite	C
2252	PHBA	Basalt, porphyritic	U	Porphyritic basalt	porphyritic			AWEL	09-MAR-00	TMCM	31-AUG-18	Fine-grained, av. <0.25mm porphyritic textured extrusive/intrusive normal crystalline rock; TAS SiO2 45-52wt%, Na2O+K2O <5wt%, phenocryst type not defined	C
2253	PHBST	Phosphate-boundstone - A type of phosphorite, classified on the basis of its biogenic texture. It is a phosphorite 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 4.2, table 11 and fig. 8.	R	Phosphate-boundstone				GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock with components >50% of phosphates such as those of calcium, aluminium and iron, original components bound/encrusted by action of plants/animals in growth position (reefs). Component size not defined.	C
2254	PHGST	Phosphate-grainstone - A type of phosphorite, classified on the basis of its depositional texture. It is a grain-supported phosphorite with little matrix (mud-grade material smaller than 32 µm). British Geological Survey Research Report RR/99/03, section 4.2, table 11 and fig. 8.	R	Phosphate-grainstone				GRBA	24-FEB-00	TMCM	08-MAR-19	Grain-supported sedimentary rock components >50% of phosphates such as those of calcium, aluminium & iron, lacking matrix, (particles <0.032mm). Component size not defined.	C
2255	PHGV	Phosphate-gravel - A type of phosphate-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 4.1, table 10 and fig. 8. See also: silicate-gravel.	R	Phosphate-gravel				GRBA	24-FEB-00	TMCM	08-MAR-19	Grain supported sediment with components >50% phosphates such as those of calcium, aluminium & iron. Clasts >50% or predominantly gravel-grade, >2mm.	C
2256	PHMDST	Mudstone, phosphatic	U	Phosphatic mudstone	phosphatic			GRBA	24-FEB-00	TMCM	31-AUG-18	Siliciclastic sedimentary rock with >50vol% particles from pre-existing siliceous rocks, Particles >50% or predominantly mud-grade, <0.032mm. 5-20% unspecified primary phosphate component, such as those of calcium/aluminium/iron.	C
2257	PHMONC	Microoncoid-phosphorite - A type of phosphorite composed dominantly of microoncoids. British Geological Survey Research Report RR/99/03, section 4.2, table 12 and fig. 8.	R	Microoncoid-phosphorite				GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock, no recognisable depositional texture, components >50% of phosphates such as those of Ca/Al/Fe. Allochem dominantly as micro-oncoids, <2mm coated grains with irregular partially overlapping laminae, biogenic structures may be present.	C
2258	PHMST	Phosphate-mudstone - A type of phosphorite, classified on the basis of its depositional texture. In the Rock Classification Scheme, it is a matrix-supported phosphorite composed of greater than 75% matrix (mud-grade material smaller than 32 µm). British Geological Survey Research Report RR/99/03, section 4.2, table 11 and fig. 8.	R	Phosphate-mudstone				GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock with components >50% of phosphates such as those of calcium, aluminium & iron with particles >50% or predominantly mud-grade, <0.032mm.	C
2259	PHMUD	Phosphate-mud - A type of phosphate-sediment. In the Rock Classification Scheme, it is one in which over 75% of the clasts are smaller than 32 µm. The grain size classes are defined in the same way as the siliciclastic sediments. British Geological Survey Research Report RR/99/03, section 4.1, table 10 and fig. 8. See also: silicate-mud.	R	Phosphate-mud				GRBA	24-FEB-00	TMCM	08-MAR-19	Sediment with components >50% of phosphates such as those of calcium, aluminium & iron with particles >50% or predominantly mud-grade, <0.032mm.	C
2260	PHNMDT	Mudstone, phosphate-nodular	U	Phosphate-nodular mudstone	phosphate-nodular			AWEL	28-MAR-01	TMCM	31-AUG-18	Not Available	C
2261	PHNOD	Phosphorite, nodular	U	Nodular phosphorite	nodular			AWEL	28-MAR-01	TMCM	31-AUG-18	Not Available	C
2262	PHNSDT	Sandstone, phosphate-nodular	U	Phosphate-nodular sandstone	phosphate-nodular			AWEL	28-MAR-01	TMCM	31-AUG-18	Not Available	C
2263	PHNSLT	Siltstone, phosphate-nodular	U	Phosphate-nodular siltstone	phosphate-nodular			AWEL	28-MAR-01	TMCM	31-AUG-18	Not Available	C
2264	PHONC	Oncoid-phosphorite - A type of phosphorite composed dominantly of oncoids. British Geological Survey Research Report RR/99/03, section 4.2, table 12 and fig. 8.	R	Oncoid-phosphorite				GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock with components >50% phosphates such as those of calcium, aluminium & iron. Allochem dominantly as oncoids, >2mm coated grainswith irregular partially overlapping laminae, biogenic structures may be present.	C
2265	PHOOL	Ooid-phosphorite - A type of phosphorite composed dominantly of ooids. British Geological Survey Research Report RR/99/03, section 4.2, table 12 and fig. 8.	R	Ooid-phosphorite				GRBA	24-FEB-00	TMCM	08-MAR-19	Sedimentary rock with components >50% phosphates such as those of calcium, aluminium & iron. Ooids dominant allochem, <2mm coated grains with smooth regular laminae, usually spherical/ellipsoidal no obvious biogenic structures.	C

Displaying rows 2246 to 2265 of 3025