BGS Rock Classification Scheme - Text search results
86 records found. Please click on a code for a "thumbnail" definition.
« previous page « Page 2 of 5, records 21 to 40 of 86 » next page »
| Description | Code |
|---|---|
| Microgabbro - A type of microgabbroic-rock. In the Rock Classification Scheme, it is the medium-grained equivalent of gabbro. British Geological Survey Research Report RR/99/06, section 5.1. | MCGB |
| Analcime-microgabbro - A foid-microgabbro in which the dominant feldspathoid mineral is analcime. It is the medium-grained equivalent of analcime-gabbro. British Geological Survey Research Report RR/99/06, section 5.1. | MCGBAN |
| Analcime-microgabbro, olivine | MCGBAO |
| Microgabbro, biotite-bytownite | MCGBBY |
| Microgabbro, foliated | MCGBFO |
| Microgabbro, feldspar-phyric | MCGBFP |
| Microgabbro, fluxioned | MCGBFX |
| Microgabbro, glassy | MCGBGL |
| Orthopyroxene-microgabbro, hypersthene | MCGBHY |
| Melamicrogabbro | MCGBM |
| Microgabbroic-rock, magnetic | MCGBMG |
| Microgabbronorite - A type of microgabbro. In the Rock Classification Scheme, it is the medium-grained equivalent of gabbronorite. British Geological Survey Research Report RR/99/06, section 5.1. | MCGBNO |
| Melamicrogabbro, olivine | MCGBO |
| Microgabbro, porphyritic | MCGBP |
| Microgabbro, pegmatitic | MCGBPG |
| Microgabbro, plagioclase-phyric | MCGBPP |
| Microgabbroic-rock - A type of medium-grained normal crystalline rock. In the Rock Classification Scheme, it is the medium-grained equivalent of gabbroic-rock. The class includes microgabbro, micromonzogabbro, and similar rocks. The term may be used as a field classification when an accurate mineral mode from thin section examination is not available. British Geological Survey Research Report RR/99/06, section 5.1. | MCGBR |
| Microgabbroic-rock, hornfelsed | MCGBRH |
| Melamicrogabbroic-rock | MCGBRM |
| Microgabbro (s.s.) - A type of microgabbro. In the Rock Classification Scheme, it is the medium-grained equivalent of gabbro (s.s.). British Geological Survey Research Report RR/99/06, section 5.1. Synonym: dolerite. | MCGBS |