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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 1906 to 1925 of 3025

Row	CODE	DESCRIPTION	RCS_STATUS	TRANSLATION	Q1	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED	TRANSFER	DEFINITION_BKING	STATUS
1906	MQWACK	Metaquartz-wacke	N	Metaquartz-wacke		GRBA	24-FEB-00	TMCM	30-AUG-18		Not Available	C
1907	MQZOLT	Metaquartzolite	N	Metaquartzolite		GRBA	24-FEB-00	TMCM	30-AUG-18		Not Available	C
1908	MQZP	Metaquartz-porphyry	N	Metaquartz-porphyry		AWEL	21-JAN-02	TMCM	31-AUG-18		Not Available	C
1909	MR	Mafic-rock	N	Mafic-rock		AWEL	24-JAN-02	TMCM	31-AUG-18		Not Available	C
1910	MRADLR	Metaradiolarite	N	Metaradiolarite		AWEL	31-JUL-02	TMCM	31-AUG-18		Not Available	C
1911	MRADOZ	This dictionary entry was unnecessary and has been deleted. The code is retained to prevent its re-use in future.	-	Dictionary entry deleted		AWEL	20-AUG-02	TMCM	27-MAY-20		Not Available	O
1912	MRC	Contact metamorphic rock - Contact metamorphism results from the temperature perturbation associated with the emplacement of magma into the crust. The extent of the thermal perturbation will be determined by both the crustal level at which the magma was emplaced and the volume of the magma body; contact metamorphism will merge into regional metamorphism when a large body of magma is emplaced at greater depths. In many cases, contact metamorphism is not accompanied by recognisable tectonic effects, with the result that new mineral assemblages develop granoblastic textures. The amount of recrystallisation and the associated metamorphic mineral assemblages are largely a product of a combination of the heat energy available, nature and volume of fluid flow, lithology of the country rock and the distance from the heat source. A gabbroic magma is hotter than a granite magma and so would be expected to produce greater recrystallisation with higher temperature minerals. With increasing recrystallisation granoblastic textures progressively develop so that pre-existing features in the rock are destroyed, ultimately resulting in hard, fine- to medium-grained rocks lacking parting surfaces. Preexisting features such as schistose or gneissose textures may be recognised by lithological heterogeneities. British Geological Survey Research Report RR/99/02, section 9.6.	A	Contact metamorphic rock		AWEL	23-MAY-02	TMCM	22-FEB-19		Not Available	C
1913	MRCCBM	Metasedimentary rock composed largely of calcsilicate and/or carbonate minerals - A class within metasedimentary rock based on modal composition. In the Rock Classification Scheme, these are metamorphic rocks containing more than 50% calcsilicate and/or carbonate minerals. This class includes calcsilicate-rock, and metacarbonate-rock. British Geological Survey Research Report RR/99/02, section 3.2 and figs. 6, 7.	A	Metasedimentary rock composed largely of calcsilicate and/or carbonate minerals		AWEL	23-MAY-02	TMCM	22-FEB-19		Not Available	C
1914	MRDROC	Siliciclastic rudaceous metarock	N	Siliciclastic rudaceous metarock		GRBA	24-FEB-00	TMCM	30-AUG-18		Not Available	C
1915	MRDSD	This dictionary entry was unnecessary and has been deleted. The code is retained to prevent its re-use in future.	-	Dictionary entry deleted		AWEL	22-JUL-02	TMCM	27-MAY-20		Not Available	O
1916	MRG	Mafic-rock, gneissose	U	Gneissose mafic-rock	gneissose	AWEL	30-JUL-02	TMCM	31-AUG-18		Not Available	C
1917	MRH	Mafic-rock, hornfelsed	U	Hornfelsed mafic-rock	hornfelsed	AWEL	29-APR-04	TMCM	31-AUG-18		Not Available	C
1918	MRI	Impact metamorphic rock - A type of metamorphic rock.	A	Impact metamorphic rock		AWEL	23-MAY-02	TMCM	22-FEB-19		Not Available	C
1919	MROC	Rock, mineralized - This term is used for any rock showing a significant degree of mineralization.	N	Mineralized rock	mineralized	DJLO	25-JUL-06	TMCM	13-MAR-19	I	Not Available	C
1920	MRPC	Mechanically broken rock without primary cohesion - In the Rock Classification Scheme, this class is subdivided into fault-breccia, and fault-gouge, according to the proportion of visible fragments within a finer-grained matrix. The abundance and size of the fragments depends on the original character of the rock and also the rate and duration of movement. The resulting rocks range from coarse breccias with limited disruption of the original rock to fine gouge where the rock is largely reduced to paste. Any cohesion is the result of secondary cementation. Such rocks invariably form at low confining pressures. British Geological Survey Research Report RR/99/02, section 7.1.	A	Mechanically broken rock without primary cohesion		AWEL	08-JUN-01	TMCM	22-FEB-19		Not Available	C
1921	MRQFM	Metasedimentary rock composed largely of quartz, feldspar and mica - A class within metasedimentary rock based on modal composition. In the Rock Classification Scheme, this class includes quartzite, psammite, semipelite, and pelite. British Geological Survey Research Report RR/99/02, section 3.2 and figs. 5, 6.	A	Metasedimentary rock composed largely of quartz, feldspar and mica		AWEL	23-MAY-02	TMCM	22-FEB-19		Not Available	C
1922	MRRM	Metamorphosed rock of restricted mineralogy	N	Metamorphosed rock of restricted mineralogy		AWEL	28-JAN-02	TMCM	30-AUG-18		Not Available	C
1923	MRUD	Metarudite (psephite)	N	Metarudite (Psephite)		AWEL	03-JUL-01	TMCM	31-AUG-18		Not Available	C
1924	MRY	Metarhyolite	N	Metarhyolite		GRBA	24-FEB-00	TMCM	30-AUG-18		Not Available	C
1925	MRYAG	Meta-agglomerate, rhyolitic	U	Rhyolitic meta-agglomerate	rhyolitic	AWEL	05-SEP-02	TMCM	31-AUG-18		Not Available	C

Displaying rows 1906 to 1925 of 3025