BGS Rock Classification Scheme

Tuffisite - A type of intrusion-breccia. It comprises brecciated and lithified country-rock fragments found in intrusive pipes which are formed by the explosive release of gas. British Geological Survey Research Report RR/99/06, section 8.2.

Code TUFIST
Description Tuffisite - A type of intrusion-breccia. It comprises brecciated and lithified country-rock fragments found in intrusive pipes which are formed by the explosive release of gas. British Geological Survey Research Report RR/99/06, section 8.2.
Qualifiers No qualifiers currently exist.
Definition Normal/exotic intrusive fragmental igneous with country-rock in"pipes" formed by explosive gas release
Linked data http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/TUFIST

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.