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