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 2706 to 2725 of 3025
| Row | CODE | DESCRIPTION | RCS_STATUS | TRANSLATION | Q1 | Q2 | Q3 | Q4 | USER_ENTERED | DATE_ENTERED | USER_UPDATED | DATE_UPDATED | TRANSFER | DEFINITION_BKING | STATUS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2706 | TEPFDI | Tephritic-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 15b of the quartz - alkali feldspar - plagioclase - feldspathoid (QAPF) diagram. Basanitic-foidite and tephritic-foidite are distinguished by the amount of olivine in the CIPW norm: if normative olivine is less than 10% the rock is tephritic-foidite. British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17a, 19. | R | Tephritic-foidite | GRBA | 24-FEB-00 | TMCM | 22-FEB-19 | Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; feldspathoids 60-90% QAPF, feldspar >50% plagioclase, olivine <10% | C | |||||
| 2707 | TEPPN | Tephritic-phonolite - A type of phonolitic-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 12 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 | Tephritic-phonolite | GRBA | 24-FEB-00 | TMCM | 22-FEB-19 | Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; feldspathoids 10-60% of QAPF, feldspar 50-90% alkali feldspar | C | |||||
| 2708 | TEPPNT | Tephri-phonolite - A type of phonolitic-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 tephri-phonolite is as shown in British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17b, 20. | R | Tephri-phonolite | GRBA | 24-FEB-00 | TMCM | 22-FEB-19 | Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; TAS SiO2 48.4-57.6wt%, Na2O+K+B11O 9.3-14wt% | C | |||||
| 2709 | TEPR | Tephritic-rock - A type of mafite. In the Rock Classification Scheme, this class includes tephrite, basanite 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 | Tephritic-rock | GRBA | 24-FEB-00 | TMCM | 22-FEB-19 | Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; feldspathoids 10-60% QAPF, feldspar >50% plagioclase, TAS SiO2 41-53wt%, Na2O+K2O 3-11.5wt% | C | |||||
| 2710 | TEPRT | Tephritic-rock (TAS) | - | Tephritic-rock (TAS) | AWEL | 17-DEC-04 | TMCM | 24-AUG-18 | Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; TAS SiO2 41-53wt%, Na2O+K2O 3-11.5wt% | O | |||||
| 2711 | TEPT | Tephrite (TAS) - A type of tephritic-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 Tephrite (TAS) is as shown in British Geological Survey Research Report RR/99/06, section 5.2 and figs. 17b, 20. | R | Tephrite (TAS) | GRBA | 24-FEB-00 | TMCM | 22-FEB-19 | Fine-grained, av. <0.25mm normal crystalline extrusive/intrusive rock; modal olivine <10%; TAS SiO2 41-49.4wt%, Na2O+K2O 3-9.4wt% | C | |||||
| 2712 | TFABR | Tuffaceous-breccia - A type of tuffaceous-sedimentary-rock. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4. See also: breccia. | R | Tuffaceous-breccia | GRBA | 24-FEB-00 | TMCM | 15-FEB-19 | Lithified clastic material >10% debris formed by volcanic processes, 25-75vol% pyroclastic fragments,>75% lapilli/blocks>bombs >2mm, fragments dominantly angular, composition not defined | C | |||||
| 2713 | TFACNG | Tuffaceous-conglomerate - A type of tuffaceous-sedimentary-rock. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4. See also: conglomerate. | R | Tuffaceous-conglomerate | GRBA | 24-FEB-00 | TMCM | 15-FEB-19 | Lithified clastic material >10% debris formed by volcanic processes, 25-75vol% pyroclastic fragments,>75% lapilli/bombs>blocks >2mm, fragments dominantly rounded, composition not defined | C | |||||
| 2714 | TFAGRV | Tuffaceous-gravel - A type of tuffaceous-sediment. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4. | R | Tuffaceous-gravel | GRBA | 24-FEB-00 | TMCM | 15-FEB-19 | Unlithified clastic material >10% debris formed by volcanic processes, 25-75vol% pyroclastic fragments, av. >2mm; composition not defined | C | |||||
| 2715 | TFAMST | Tuffaceous-mudstone - A type of tuffaceous-sedimentary-rock. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4. See also: mudstone. | R | Tuffaceous-mudstone | GRBA | 24-FEB-00 | TMCM | 15-FEB-19 | Lithified clastic material >10% debris formed by volcanic processes, 25-75vol% pyroclastic fragments, av. <0.032mm, composition not defined | C | |||||
| 2716 | TFAMUD | Tuffaceous-mud - A type of tuffaceous-sediment. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4. | R | Tuffaceous-mud | GRBA | 24-FEB-00 | TMCM | 15-FEB-19 | Unlithified clastic material >10% debris formed by volcanic processes, 25-75vol% pyroclastic fragments, av. <0.032mm, composition not defined | C | |||||
| 2717 | TFASD | Tuffaceous-sediment - In the Rock Classification Scheme, a tuffaceous-sediment consists of 25 - 75% by volume pyroclastic fragments. It is the unconsolidated equivalent of tuffaceous-sedimentary-rock. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4. | A | Tuffaceous-sediment | GRBA | 24-FEB-00 | TMCM | 15-FEB-19 | Unlithified clastic material >10% debris formed by volcanic processes, 25-75vol% pyroclastic fragments, fragment size & composition not defined | C | |||||
| 2718 | TFASND | Tuffaceous-sand - A type of tuffaceous-sediment. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4. | R | Tuffaceous-sand | GRBA | 24-FEB-00 | TMCM | 15-FEB-19 | Unlithified clastic material >10% debris formed by volcanic processes, 25-75vol% pyroclastic fragments, av. between 0.032-2mm, composition not defined | C | |||||
| 2719 | TFASR | Tuffaceous-sedimentary-rock - In the Rock Classification Scheme, a tuffaceous-sedimentary-rock consists of 25 - 75% by volume pyroclastic fragments. It is the consolidated equivalent of tuffaceous-sediment. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4. | A | Tuffaceous-sedimentary-rock | GRBA | 24-FEB-00 | TMCM | 15-FEB-19 | Lithified clastic material >10% debris formed by volcanic processes, 25-75vol% pyroclastic fragments, fragment size & composition not defined | C | |||||
| 2720 | TFASST | Tuffaceous-sandstone - A type of tuffaceous-sedimentary-rock. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4. See also: sandstone. | R | Tuffaceous-sandstone | GRBA | 24-FEB-00 | TMCM | 15-FEB-19 | Lithified clastic material >10% debris formed by volcanic processes, 25-75vol% pyroclastic fragments, av. between 0.032-2mm, composition not defined | C | |||||
| 2721 | TFEC | Tuff, eutaxitic-crystal | U | Eutaxitic-crystal tuff | eutaxitic | crystal | AWEL | 17-DEC-04 | TMCM | 31-AUG-18 | Not Available | C | |||
| 2722 | TFSLST | Tuffaceous-siltstone - A type of tuffaceous-sedimentary-rock. British Geological Survey Research Report RR/99/06, section 4.2 and fig. 4. See also: siltstone. | R | Tuffaceous-siltstone | DJLO | 26-JUL-05 | TMCM | 15-FEB-19 | Lithified clastic material >10% debris formed by volcanic processes, 25-75vol% pyroclastic fragments, av. between 0.004-0.032mm, composition not defined | C | |||||
| 2723 | TFWC | Tuff, welded-crystal | U | Welded-crystal tuff | welded | crystal | AWEL | 17-DEC-04 | TMCM | 31-AUG-18 | Not Available | C | |||
| 2724 | TFWE | Tuff, welded-eutaxitic | U | Welded-eutaxitic tuff | welded | eutaxitic | AWEL | 17-DEC-04 | TMCM | 31-AUG-18 | Not Available | C | |||
| 2725 | THERM | Thermonatrite - A type of Na carbonate sedimentary rock. Thermonatrite (Na2CO3.H2O) forms orthorhombic crystals and efflorescent crusts. British Geological Survey Research Report RR/99/03, section 3.3. | A | Thermonatrite | GRBA | 24-FEB-00 | TMCM | 08-MAR-19 | Primary sodium carbonate precipitate. Na2CO3.H2O crystals orthorhombic, efflorescent crusts, no unlithified equivalent. Crystal size not defined. An evaporite. | C |
Displaying rows 2706 to 2725 of 3025