The BGS Lexicon of Named Rock Units — Result Details

Bentleyford Shales Formation

Computer Code: BTS Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Merioneth Series (EM) — Merioneth Series (EM)
Lithological Description: Sooty black shales with black bituminous limestone concretions.
Definition of Lower Boundary: Conformable on grey, micaceous shales of the underlying Shoot Rough Road Shales.
Definition of Upper Boundary: Non-sequence beneath grey to blue shales of the overlying Shineton Shales.
Thickness: 4m
Geographical Limits: Shropshire.
Parent Unit: Not Applicable (-)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Bentleyford Brook, 14km south of Shrewsbury. 
Reference(s):
Stubblefield, C J, 1930. A new Upper Cambrian section in south Shropshire. Summary of Progress of the Geological Survey of Great Britain for 1929, part 2, 54-62. 
Cowie, J W, Rushton, A W A and Stubblefield, C J, 1972. A correlation of Cambrian rocks in the British Isles. Special Report of the Geological Society of London, No.2, p.26. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable