The BGS Lexicon of Named Rock Units — Result Details

Faraday Road Member

Computer Code: FAR Preferred Map Code: FarM
Status Code: Full
Age range: Eifelian Age (DI) — Eifelian Age (DI)
Lithological Description: Thin, sharp and erosively based, dark grey, commonly foetid crinoidal packstone intercalated with calcareous mudstone or argillaceous, fine-grained wackestone. In type area, 50m of grey-green, basaltic tuffaceous mudstone is present at the top.
Definition of Lower Boundary: Faulted out.
Definition of Upper Boundary: Conformably succeeded by grey slaty calcareous mudstone of the Prince Rock Member.
Thickness: Not known, part of reef deposit.
Geographical Limits: Plymouth area, 50k geological sheets 348/349.
Parent Unit: Plymouth Limestone Formation (PYL)
Previous Name(s): Plymouth Limestone (-901)
Alternative Name(s): none recorded or not applicable
Reference Section  Partly exposed in quarry wall in the west side of Stonehouse Pool at the southern end of Richmond Walk. 
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). 
1:50K maps on which the lithostratigraphical unit is found, and map code used: