The BGS Lexicon of Named Rock Units — Result Details

Erbistock Formation [Obsolete Name And Code: See SAL and HA]

Computer Code: ERB Preferred Map Code: notEntered
Status Code: Index Level
Age range: Asturian Substage (CAS) — Cisuralian Epoch (PLC)
Lithological Description: none recorded or not applicable
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: Originally Erbistock Beds in Shrewsbury Coalfield, where it included Keele Beds (below) and Alberbury Breccia (above. Replaced by these two names on 1:50K Shrewsbury reprint (152) with an unconformity (base Permian) between the two parts. Use of Erbistock Formation on Chester (109) is restricted to the Keele Beds part (ie late Carboniferous). Keele Beds is now regarded provisionally as Salop Formation.
Parent Unit: Warwickshire Group (WAWK)
Previous Name(s): Erbistock Group (-1528)
Alternative Name(s): Halesowen Formation
Salop Formation
Stratotypes:
none recorded or not applicable
Reference(s):
Powell, J H, Chisholm, JI, Bridge, D M, Rees, J G, Glover, B W and Besly, B M. 1999. Stratigraphical framework for Westphalian to Early Permian red-bed successions of the Pennine Basin. British Geological Survey Technical Report WA/99/10. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E109