The BGS Lexicon of Named Rock Units — Result Details

Conwy Mudstones Formation

Computer Code: COMU Preferred Map Code: CyM
Status Code: Pending Upgrade
Age range: Ashgill Series (OA) — Ashgill Series (OA)
Lithological Description: Grey mudstones and siltstones with thin, flaggy, cross-bedded and ripple marked sandstones.
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: Not Applicable (-)
Previous Name(s): Deganwy Mudstone [Obsolete Name And Code: Use COMU] (DYM)
Bodeidda And Deganwy Mudstones (-153)
Gyffin Shales [Obsolete Name And Code: Use COMU] (GYS)
Bodeidda Mudstones [Obsolete Name And Code: Use COMU] (BDM)
Alternative Name(s): Grinllwm Grits
Stratotypes:
none recorded or not applicable
Reference(s):
none recorded or not applicable
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E094