Type Group Region England Primary Mudstone Underlies Holsworthy Group | Thickness 100 to 720m Country United Kingdom Overlies Exmoor Group Unit of Culm Measures | |
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Sub-units Barras Nose Formation, Trambley Cove Formation, Teign Chert Formation, Dowhills Mudstone Formation, Boscastle Formation Other cherts, sandstones, limestones, basaltic lavas, tuffs | ||
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.
References
Teign Valley Group Wikipedia(Text) CC BY-SA