The BGS Lexicon of Named Rock Units — Result Details
Lynton Formation
| Computer Code: | LNSL | Preferred Map Code: | Lyn |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Emsian Age (DE) — Eifelian Age (DI) | ||
| Lithological Description: | Finely-laminated sandstones and mudstones, slates, siltstones. Trace fossil Chondrites abundant. Thin shell beds. | ||
| Definition of Lower Boundary: | Base not seen. | ||
| Definition of Upper Boundary: | Overlain conformably by Hangman Sandstone Formation (Hollowbrook Member) - ie. where sandstones become dominant in the succession. | ||
| Thickness: | c.300 - 400m | ||
| Geographical Limits: | Sheets 277 and 278 (north Devon and west Somerset). | ||
| Parent Unit: | Not Applicable (-) | ||
| Previous Name(s): | Lynton Formation [Obsolete Code: Use LNSL]
(LNB)
Lynton Beds [Obsolete Name and Code: Use LNSL] (-1667) Lynton Slates [Obsolete Name and Code: Use LNSL] (-1037) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | Sea cliffs between Woody Bay and Lynmouth Bay, near Lynton, north Devon. (No formal definition of the formation yet published). | ||
| Reference(s): | |||
| Edmonds, E A, Whittaker, A, and Williams, B J. 1985. Geology of the country around Ilfracombe and Barnstaple. Memoir of the British Geological Survey, Sheets 277 and 293 (England and Wales). | |||
| Simpson, S. 1964. The Lynton Beds of North Devon. Proceedings of the Ussher Society, Vol.1, 121-22. | |||
| Evans, K M. 1983. Note on the age and fauna of the Lynton Beds (Lower Devonian) of North Devon. Geological Journal, Vol.18, 297-305. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E277 | |||