Tamar Group

Tamar Group
Stratigraphic range: Emsian (Devonian) to Tournaisian (Carboniferous)
Type Group
Sub-units Burraton Formation, Tavy Formation, Torquay Limestone Formation
Underlies Chudleigh Group (faulted)
Overlies Meadfoot Group
Thickness over 6700m on N Cornish coast
Lithology
Primary mudstones
Other siltstones, sandstones, limestones, spilite, hyaloclastite, tuffs
Location
Region England
Country United Kingdom
Extent south Devon to north Cornwall
Type section
Named for valley of River Tamar

The Tamar Group is an early Devonian to early Carboniferous geologic group in south Devon and north Cornwall in southwest England. The name is derived from the valley of the River Tamar on the Devon/Cornwall border. The Group comprises (in ascending order) the Torquay Limestone, Tavy and Burraton formations.[1] Some of the rocks are fossiliferous.

See also

References

  1. http://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=TAMA (BGS on-line lexicon of rock units)


This article is issued from Wikipedia - version of the Tuesday, December 30, 2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.