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 Slates (-1037)
Lynton Beds (-1667)
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