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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.


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Row CODE DESCRIPTION RCS_STATUS TRANSLATION Q1 Q2 Q3 Q4 USER_ENTERED DATE_ENTERED USER_UPDATED DATE_UPDATED TRANSFER DEFINITION_BKING STATUS
301 CASLST  Siltstone, calcareous  U  Calcareous siltstone  calcareous        AWEL  31-MAY-02  TMCM  31-AUG-18    Sedimentary rock grains >50% or predominantly silt-grade, 0.004 to 0.032mm. 10 to 50% calcite/aragonite  C 
302 CASPGB  Semipelite, calcareous, garnet-bearing  U  Garnet-bearing calcareous semipelite  garnet-bearing  calcareous      DJLO  02-MAR-06  TMCM  31-AUG-18    Not Available  C 
303 CASST  Sandstone, carbonaceous, argillaceous  U  Carbonaceous argillaceous sandstone  carbonaceous  argillaceous      AWEL  10-JUN-02  TMCM  31-AUG-18    Siliciclastic sedimentary rock grains >50% or predominantly sand-grade, 0.032 to 2mm. Argillaceous particles <0.032mm from pre-existing siliciclastic rocks & carbonaceous material, plants. Carbonaceous C 
304 CAT  Cataclasite - A type of cataclastic-rock. In the Rock Classification Scheme, it is one in which fragments significantly coarser than the matrix comprise 10 - 50% by volume of the rock. British Geological Survey Research Report RR/99/02, section 7.2 and table 4.  R  Cataclasite          GRBA  24-FEB-00  TMCM  22-FEB-19    Deformed (brittle), unfoliated rock with primary cohesion (protolith undefined) comprising 10-50% fragments in a finer grained matrix, grain size reduction by mechanical fragmentation +/- recrystallisation of matrix. Porphyroclasts monomineral fragments  C 
305 CATR  Cataclastic-rock - A type of unfoliated mechanically broken rock with primary cohesion. These rocks are formed at higher confining pressures than those without cohesion. The nature of the rocks depends on factors such as confining pressure, original lithology, amount and duration of movement, and the availability of fluids. Cataclastic rocks exhibit grain size reduction by fragmentation of grains during deformation. In the Rock Classification Scheme, they are classified as protocataclasite, cataclasite, and ultracataclasite on the relative proportions of fragments and matrix. British Geological Survey Research Report RR/99/02, section 7.2 and table 4.  R  Cataclastic-rock          AWEL  12-MAY-00  TMCM  22-FEB-19    Deformed (brittle), unfoliated rock with primary cohesion (protolith undefined) comprising 10-50% fragments in a finer grained matrix, grain size reduction by mechanical fragmentation +/- recrystallisation of matrix.  C 
306 CATUFA  Tufa, calcareous - A type of tufa. British Geological Survey Research Report RR/99/04, section 4 and tables 5, 17.  U  Calcareous tufa  calcareous        GRBA  24-FEB-00  TMCM  13-MAR-19    Thin, surficial, soft, spongy, semifriable, crystalline incrustation around the mouth of springs, seeps or streams carrying calcium carbonate in solution & exceptionally as thick deposits along lakeshores. 10 to 50% calcite/aragonite. Tufa-limestone.  C 
307 CB  Clay, bouldery [Unlithified Deposits Coding Scheme]  U  Bouldery clay [UDCS]  bouldery        AWEL  09-JAN-02  TMCM  30-AUG-18    Not Available  C 
308 CBCOAL  Cannel-boghead-coal - A type of sapropelic-coal. It is a transitional stage between cannel-coal and boghead-coal in which alginite dominates over miospores. British Geological Survey Research Report RR/99/03, section 6.2 and fig. 10.  R  Cannel-boghead-coal          GRBA  24-FEB-00  TMCM  08-MAR-19    A sapropelic coal. Mud-grade, >75% <0.032mm rock. Alginite > miospores, dull black, waxy lustre, homogeneous, conchoidal fracture. Microstratification & siderite common. Microscopically macerals finer, more uniform & intimately mixed than in humic coal.  C 
309 CBFEST  Ironstone, carbonaceous  U  Carbonaceous ironstone  carbonaceous        AWEL  31-MAY-02  TMCM  31-AUG-18    Sedimentary rock, no recognisable depositional texture with clasts >50% iron-bearing minerals (>15wt% iron). Clast size not defined. 5-20%visible carbon/humic material.  C 
310 CBL  Clay, bouldery, cobbly [Unlithified Deposits Coding Scheme]  U  Cobbly bouldery clay [UDCS]  bouldery  cobbly      DJLO  20-FEB-09  TMCM  30-AUG-18  I  Not Available  C 
311 CBP  Clay, bouldery, peaty [Unlithified Deposits Coding Scheme]  U  Peaty bouldery clay [UDCS]  bouldery  peaty      AWEL  17-MAR-04  TMCM  30-AUG-18    Not Available  C 
312 CBRMY  Carbonate-rock, mylonitic  U  Mylonitic carbonate-rock  mylonitic        AWEL  21-JAN-02  TMCM  31-AUG-18    Deformed (ductile), intensely foliated rock (protolith, >50% crystals carbonate) with primary cohesion, containing 10-50% porphyroclasts(commonly lensoid with tails indicating shearing sense) in a finer grained dynamically recrystallised matrix  C 
313 CBT  Carbonatite - A type of exotic crystalline igneous rock. In the Rock Classification Scheme, it is defined as an igneous rock that contains more than 50% modal primary carbonate. It is known to occur in extrusive, shallow and deep-seated environments. British Geological Survey Research Report RR/99/06, section 6.1 and figs. 25, 26.  A  Carbonatite          GRBA  24-FEB-00  TMCM  22-FEB-19    Exotic crystalline intrusive/extrusive rock; >50% modal primary carbonates of calcium/magnesium/iron/manganese  C 
314 CEL  Celestine  -  Celestine          DJLO  13-FEB-07  TMCM  24-AUG-18  I  Not Available  O 
315 CELN  Celestine, nodular  -  Nodular Celestine  nodular        DJLO  13-FEB-07  TMCM  24-AUG-18  I  Not Available  O 
316 CERMIC  Ceramic waste - A type of artifical deposit. It consists of waste material from the pottery and ceramic industries, commonly comprising partly fired and fired clay products. British Geological Survey Research Report RR/99/04, appendix 1.  R  Ceramic waste          GRBA  24-FEB-00  TMCM  13-MAR-19    Not Available  C 
317 CESCH  Schist, chlorite-epidote  U  Chlorite-epidote schist  chlorite  epidote      AWEL  11-JUN-02  TMCM  31-AUG-18    Medium-grained (av. 0.25-2mm), crystalloblastic metamorphic rock (protolith undefined) splits into <5mm slabs/flakes defined by a well developed planar orientation of platy/prismatic minerals; chlorite C 
318 CGHSCH  Schist, clinopyroxene-garnet-hornblende  U  Clinopyroxene-garnet-hornblende schist  clinopyroxene  garnet  hornblende    AWEL  11-JUN-02  TMCM  31-AUG-18    Medium-grained (av. 0.25-2mm), crystalloblastic metamorphic rock (protolith undefined) splits into <5mm slabs/flakes defined by a well developed planar orientation of platy/prismatic minerals; clinopyroxene C 
319 CGR  Coarse-grained normal crystalline rock - In the Rock Classification Scheme, a crystalline rock is coarse-grained if its average crystal size is greater than 2 mm. This group corresponds to the plutonic division of the IUGS scheme. British Geological Survey Research Report RR/99/06, section 1.3 and figs. 1, 3 and 9.  A  Coarse-grained normal crystalline rock          AWEL  08-JUN-01  TMCM  15-FEB-19    Coarse-grained, av. between 2-16mm chemically/mineralogically normal intrusive rock; includes most of volume of coarse-grained igneous rocks  C 
320 CH  Clay, shelly [Unlithified Deposits Coding Scheme - Extended]  U  Shelly clay [UDCS-X]  shelly        TMCM  27-MAY-20      I  Not Available  C 

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