The BGS Lexicon of Named Rock Units — Result Details

Isohomoceras subglobosum Marine Band (3 of 3)

Computer Code: H1A3 Preferred Map Code: H1a3
Status Code: Index Level
Age range: Chokierian Substage (CH) — Chokierian Substage (CH)
Lithological Description: Mudstone.
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: none recorded or not applicable
Parent Unit: Craven Group (CRAV)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Waters, C N, Waters, R A, Barclay, W J, and Davies, J R. 2009. Lithostratigraphical framework for Carboniferous successions of Southern Great Britain (Onshore). British Geological Survey Research Report, RR/09/01. 184pp. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable