The BGS Lexicon of Named Rock Units — Result Details

Dunscombe Mudstone Formation [Obsolete: use AS, BCMU]

Computer Code: DUM Preferred Map Code: notEntered
Status Code: Index Level
Age range: Triassic Period (T) — Triassic Period (T)
Lithological Description: [Obsolete: use AS, BCMU]
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: none recorded or not applicable
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Howard, A S, Warrington, G, Ambrose, K, and Rees, J G. 2008. A formational framework for the Mercia Mudstone Group (Triassic) of England and Wales. British Geological Survey Research Report, RR/08/04. 
Gallois, R W. 2001. The lithostratigraphy of the Mercia Mudstone Group (mid to late Triassic) of the south Devon coast. Geoscience in south-west England, Vol.10, 195-204 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable