Tamar Group

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.

Tamar Group
Stratigraphic range: Emsian-Tournaisian
Type	Group
Sub-units	Burraton Formation, Tavy Formation, Torquay Limestone
Underlies	Chudleigh Group (faulted)
Overlies	Meadfoot Group
Thickness	over 6,700 m (22,000 ft) on N Cornish coast
Lithology
Primary	Mudstone
Other	Siltstone, sandstone, limestone, spilite, hyaloclastite, tuff
Location
Region	England
Country	United Kingdom
Extent	south Devon to north Cornwall
Type section
Named for	valley of River Tamar

See also

• Earth sciences portal
• Cornwall portal
• Devon portal
• Paleontology portal

• List of fossiliferous stratigraphic units in England