BGS Rock Classification Scheme
Metamorphic rock with unknown protolith - In the Rock Classification Scheme, a rock is classified within this category if the nature of the protolith is not known. The class includes metamorphic rock with unknown protolith based on textural attributes, and metamorphic rock with unknown protolith based on modal composition. British Geological Survey Research Report RR/99/02, section 6 and fig. 1.
Code | UPRO |
---|---|
Description | Metamorphic rock with unknown protolith - In the Rock Classification Scheme, a rock is classified within this category if the nature of the protolith is not known. The class includes metamorphic rock with unknown protolith based on textural attributes, and metamorphic rock with unknown protolith based on modal composition. British Geological Survey Research Report RR/99/02, section 6 and fig. 1. |
Qualifiers | No qualifiers currently exist. |
Definition | Not Available |
Linked data | http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/UPRO |
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.