BGS Rock Classification Scheme
Breccia - A type of silicate-conglomerate. In the Rock Classification Scheme, this term may be used for conglomerates made of sharply angular clasts. British Geological Survey Research Report RR/99/03, section 2.1 and fig. 2. Synonym: angular silicate-conglomerate.
| Code | BREC |
|---|---|
| Description | Breccia - A type of silicate-conglomerate. In the Rock Classification Scheme, this term may be used for conglomerates made of sharply angular clasts. British Geological Survey Research Report RR/99/03, section 2.1 and fig. 2. Synonym: angular silicate-conglomerate. |
| Qualifiers | No qualifiers currently exist. |
| Definition | Deformed (brittle), no foliation or cohesion, >30% fragments coarser than matrix, some rotation/granulation. No protolith defined. |
| Linked data | http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/BREC |
CAVEAT
"Thumbnail" definitions attached to some of the table entries are an interim attempt to provide simple short descriptions of the "unqualified" rock types presented within the BGS Rock Classification Scheme. Every effort has been made to ensure accuracy and consistency but minor contradictions or omissions might be present. The BGS welcomes any feedback pointing out such minor imperfections and/or providing constructive comment and suggestions for improvement of the definitions. In the first instance such feedback should be directed to Dr Tim McCormick.