BGS Rock Classification Scheme
Tuffite - A type of volcaniclastic igneous rock and sediment. In the Rock Classification Scheme, tuffite is a general term for volcaniclastic rocks and sediments which consist of 25 - 75% by volume pyroclastic fragments. The class includes tuffaceous-sedimentary-rock, and tuffaceous-sediment. British Geological Survey Research Report RR/99/06, section 4.2 and figs. 1, 4.
| Code | TUFT |
|---|---|
| Description | Tuffite - A type of volcaniclastic igneous rock and sediment. In the Rock Classification Scheme, tuffite is a general term for volcaniclastic rocks and sediments which consist of 25 - 75% by volume pyroclastic fragments. The class includes tuffaceous-sedimentary-rock, and tuffaceous-sediment. British Geological Survey Research Report RR/99/06, section 4.2 and figs. 1, 4. |
| Qualifiers | No qualifiers currently exist. |
| Definition | Clastic material >10vol% volcanic debris, pyroclastic fragments 25-75vol%; size/lithification/composition not defined |
| Linked data | http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/TUFT |
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.