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 626 to 645 of 3025
| Row | CODE | DESCRIPTION | RCS_STATUS | TRANSLATION | Q1 | Q2 | Q3 | Q4 | USER_ENTERED | DATE_ENTERED | USER_UPDATED | DATE_UPDATED | TRANSFER | DEFINITION_BKING | STATUS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 626 | FEWST | Iron-wackestone - A type of ironstone, classified on the basis of its depositional texture. In the Rock Classification Scheme, it is a matrix-supported ironstone composed of less than 75% 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-wackestone | GRBA | 24-FEB-00 | TMCM | 08-MAR-19 | Matrix-supported sedimentary rock (>15wt % iron) with particles >50% iron-bearing minerals (15wt% iron). >75% matrix (particles <0.032mm) | C | |||||
| 627 | FGECR | Fine-grained-crystalline-rocks [exotic] | N | Fine-grained-crystalline-rocks [exotic] | AWEL | 17-DEC-04 | TMCM | 31-AUG-18 | Chemically/mineralogically exotic rock with >75% crystals av. between 0.032-0.25mm; includes only a very small proportion of igneous rocks; carbonatites, melilitic, kalsilitic, leucitic rocks, kimberlites, lamproites, lamprophyres | C | |||||
| 628 | FGNR | Fine-grained normal crystalline rock - In the Rock Classification Scheme, a crystalline rock is fine-grained if its average crystal size is less than 0.25 mm. This classification is used for fine-grained, very fine-grained, and glassy crystalline igneous rocks. The class includes felsite, mafite, glassy-igneous-rock, and porphyry. This group corresponds to the volcanic division of the IUGS scheme. British Geological Survey Research Report RR/99/06, section 1.3 and figs. 1, 3. | A | Fine-grained normal crystalline rock | AWEL | 08-JUN-01 | TMCM | 22-FEB-19 | Chemically/mineralogically normal rock with >75% crystals av. between 0.032-0.25mm; includes most of the volume of fine-grained igneous rocks | C | |||||
| 629 | FGOUGE | Fault-gouge - A type of mechanically broken rock without primary cohesion. In the Rock Classification Scheme, a fault-gouge may be strongly foliated, and comprises less than 30% fragments lying in fine-grained, commonly clayey matrix. British Geological Survey Research Report RR/99/02, section 7.1 and table 3. | R | Fault-gouge | GRBA | 24-FEB-00 | TMCM | 22-FEB-19 | Deformed (brittle), foliated rock; no primary cohesion, (protolith undefined) in which angular/rounded fragments (<30%) are significantly coarser than the clay size (>0.004mm) matrix | C | |||||
| 630 | FGSST | Sandstone, ferruginous | U | Ferruginous sandstone | ferruginous | AWEL | 10-JUN-02 | TMCM | 31-AUG-18 | Siliciclastic sedimentary rock, grains >50% or predominantly sand-grade, 0.032 to 2mm. Composition not defined. 5-20% iron oxide/hydroxide minerals. | C | ||||
| 631 | FHRMR | Fayalite-hedenbergite-rock, magnetite-rich | U | Magnetite-rich fayalite-hedenbergite-rock | magnetite-rich | AWEL | 19-MAR-04 | TMCM | 31-AUG-18 | Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; CI M>90%; olivine (dominantly fayalite) 40-90%, |
C | ||||
| 632 | FILLU | Fill - A type of artifical deposit. It is a general term for material used to infill a void or cavity in the earth's surface or sub-surface. Constructional fill (made ground) is material placed above the natural earth surface. British Geological Survey Research Report RR/99/04, appendix 1. | R | Fill | AWEL | 25-FEB-00 | TMCM | 13-MAR-19 | Not Available | C | |||||
| 633 | FINES | Fines (silts and clays) - A type of artificial deposit. In the Rock Classification Scheme, this refers to sediment grains less than 1/16 mm in size. British Geological Survey Research Report RR/99/04, table 8a. | R | Fines (silts and clays) | GRBA | 24-FEB-00 | TMCM | 13-MAR-19 | Not Available | C | |||||
| 634 | FIS | Fine-sand [Unlithified Deposits Coding Scheme - Extended] | U | Fine-sand [UDCS-X] | TMCM | 28-MAY-20 | I | Not Available | C | ||||||
| 635 | FLAVA | Lava, felsic | U | Felsic lava | felsic | AWEL | 21-MAY-02 | TMCM | 31-AUG-18 | Generally light coloured material extruded in molten state & solidified; chemically normal quartz <60% or <10% feldspathoids of QAPF, remainder dominantly feldspar | C | ||||
| 636 | FLGRAV | Gravel, flinty [Obsolete code: use VFLY] | U | Flinty gravel | flinty | AWEL | 11-JUN-02 | TMCM | 02-OCT-20 | Sediment, clasts >50% or predominantly gravel-grade, >2.0mm. 5-20% clasts of flint >50% silica of biogenic or chemical origin, porosity <10%. Hard, dense with vitreous lustre, dominantly <0.004mm, grey/black & derived from Cretaceous chalk beds. | O | ||||
| 637 | FLMST | Limestone, ferruginous | U | Ferruginous limestone | ferruginous | AWEL | 11-JUN-02 | TMCM | 31-AUG-18 | Sedimentary rock with components >50% calcite/aragonite. 5-20% iron oxide/hydroxide minerals. Component size & iron minerals not defined. | C | ||||
| 638 | FLNT | Flint - A nodular form of grey/black chert. The term is restricted to the nodules of chert present in Cretaceous chalk. British Geological Survey Research Report RR/99/03, section 8.2 and fig. 12. | R | Flint | GRBA | 24-FEB-00 | TMCM | 08-MAR-19 | Non-clastic siliceous sedimentary rock with >50% silica of biogenic or chemical origin, porosity <10%. Hard, dense with vitreous lustre. Dominantly <0.004mm, cryptocrystalline. Nodular grey/black & restricted to Cretaceous chalk. A chert, noviculite. | C | |||||
| 639 | FLPTUF | Lapilli-tuff, felsitic | U | Felsitic lapilli-tuff | felsitic | KAH | 21-MAR-05 | TMCM | 31-AUG-18 | Not Available | C | ||||
| 640 | FMDST | Mudstone, ferruginous | U | Ferruginous mudstone | ferruginous | AWEL | 11-JUN-02 | TMCM | 31-AUG-18 | Siliciclastic sedimentary rock, particles >50% or predominantly mud-grade, <0.032mm. Compostion not defined. 5 to 20% iron oxide/hydroxide minerals. | C | ||||
| 641 | FMZDI | Foid-monzodiorite - 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 13 of the quartz - alkali feldspar - plagioclase - feldspathoid (QAPF) diagram. Foid-monzodiorite and foid-monzogabbro 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-monzodiorite. British Geological Survey Research Report RR/99/06, section 5.1 and figs. 9, 11, 12. | R | Foid-monzodiorite | GRBA | 24-FEB-00 | TMCM | 22-FEB-19 | Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; feldspathoids 10-60% of QAPF, feldspar 50-90% plagioclase (<50% An) +/-mica/pyroxene/amphibole/olivine | C | |||||
| 642 | FMZGB | Foid-monzogabbro - A type of foid-gabbroic-rock. In the Rock Classification Scheme, it is a coarse-grained crystalline igneous rock whose mineral mode plots in field 13 of the quartz - alkali feldspar - plagioclase - feldspathoid (QAPF) diagram. Foid-monzodiorite and foid-monzogabbro are distinguished according to the average composition of their plagioclase: if An (the anorthite content of plagioclase) is greater than 50% the rock is foid-monzogabbro. British Geological Survey Research Report RR/99/06, section 5.1 and figs. 9, 11, 12. | R | Foid-monzogabbro | GRBA | 24-FEB-00 | TMCM | 22-FEB-19 | Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; feldspathoids 10-60% of QAPF, feldspar 50-90% plagioclase (>50% An) +/-mica/pyroxene/ amphibole/olivine | C | |||||
| 643 | FMZSY | Foid-monzosyenite - 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 12 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-monzosyenite | GRBA | 24-FEB-00 | TMCM | 22-FEB-19 | Coarse-grained, av. between 2-16mm normal crystalline intrusive rock; feldspathoids 10-60% of QAPF, feldspar 50-90% alkali feldspar +/- mica/pyroxene/amphibole/olivine | C | |||||
| 644 | FOIDR | Foiditic-rock - A type of mafite. In the Rock Classification Scheme, this class includes foidite and similar rocks. The term may be used as a field classification when an accurate mineral mode from thin section examination, or a chemical analysis, is not available. British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17, 18. | A | Foiditic-rock | GRBA | 09-MAY-00 | TMCM | 22-FEB-19 | Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; feldspathoids >60% of QAPF, remainder dominantly feldspar, TAS SiO2 <52.5wt%, Na2O+K2O 0->15wt% | C | |||||
| 645 | FOIDRT | Foiditic-rock (TAS) | - | Foiditic-rock (TAS) | AWEL | 17-DEC-04 | TMCM | 24-AUG-18 | Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; TAS SiO2 <52.5wt%, Na2O+K2O 0->15wt% | O |
Displaying rows 626 to 645 of 3025