The BGS Lexicon of Named Rock Units — Result Details
Carne Formation
| Computer Code: | CRNE | Preferred Map Code: | Cne |
|---|---|---|---|
| Status Code: | Pending Upgrade | ||
| Age range: | Eifelian Age (DI) — Givetian Age (DV) | ||
| Lithological Description: | Sandstone with interbedded, laminated slaty mudstone and siltstone. The sandstones are predominantly fine- to medium-grained and form thinning- and fining-upwards sequences. Channel fills and slumps are evident in the lower to middle parts of the Formation, while the upper part is characterised by thinly to thickly bedded turbidites. | ||
| Definition of Lower Boundary: | Conformable above Pendower Formation. | ||
| Definition of Upper Boundary: | Conformable below Roseland Breccia Formation. | ||
| Thickness: | Structural thickness of c.240; c.250m in Type Section. | ||
| Geographical Limits: | Roseland and Meneage areas, south Cornwall. | ||
| Parent Unit: | Gramscatho Group (GRO) | ||
| Previous Name(s): | Grampound Grit [Obsolete Name And Code: Use TRSA Or GRAD]
(GPG)
Upper Gramscathos [Obsolete Name And Code: Use CRNE] (UGRO) Upper Gramscatho Beds [Obsolete Name and Code: Use CRNE] (-167) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Reference Section | From SE of Gidley Well to the rock promentory bounding Pennarin Cove, south Cornwall. | ||
| Type Section | Coastal section, Gerrans Bay | ||
| Reference(s): | |||
| Holder, M T and Leveridge, B E, 1986. A model for the tectonic evolution of south Cornwall. Journal of the Geological Society, London, Vol.143, 125-134. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E353 E354 E352 | |||