Teign Valley Group

Teign Valley Group
Stratigraphic range: Famennian (Devonian) to Marsdenian (Carboniferous)

Folded slate of the Boscastle Formation at Penally Point, Boscastle
Type Group
Unit of Culm Supergroup
Sub-units Barras Nose Formation, Trambley Cove Formation, Teign Chert Formation, Dowhills Mudstone Formation, Boscastle Formation
Underlies Holsworthy Group
Overlies Exmoor Group
Thickness 100 to 720m
Lithology
Primary mudstones,
Other cherts, sandstones, limestones, basaltic lavas, tuffs
Location
Region England
Country United Kingdom
Extent north Cornwall through Devon to west Somerset
Type section
Named for valley of River Teign

The Teign Valley Group is a late Devonian to late/middle Carboniferous lithostratigraphic group (a sequence of rock strata) in north Cornwall through Devon and into west Somerset in southwest England. The name is derived from the valley of the River Teign. The Group comprises (in ascending order i.e. oldest first) the Barras Nose, Trambley Cove, Teign Chert and Dowhills Mudstone formations. It was formerly known as the Lower Culm Group or Lower Culm Measures.[1]

References

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