The BGS Lexicon of Named Rock Units — Result Details

Crocadon Formation [Obsolete Name And Code: Use SME]

Computer Code: CDON Preferred Map Code: notEntered
Status Code: Index Level
Age range: Tournaisian Stage (CT) — Namurian Stage (CN)
Lithological Description: Sandstone with interbedded siltstone and shale.
Definition of Lower Boundary: Thrust fault.
Definition of Upper Boundary: Not known.
Thickness: Not known.
Geographical Limits: East Cornwall - West Devon.
Parent Unit: Not Applicable (-)
Previous Name(s): St Mellion Formation (SME)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Crocadon. 
Reference(s):
Leveridge B E, Holder, M T, Goode, A J J, Scrivener R C, Jones N S and Merriman, R J. 2002. Geology of the Plymouth and south-east Cornwall area. Memoir of the British Geological Survey, Sheet 348 (England and Wales). 
British Geological Survey, 1993. Tavistock. England and Wales Sheet 337. Solid and Drift 1:50 000 Provisional Series (Keyworth, Nottingham: British Geological Survey). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable