The BGS Lexicon of Named Rock Units — Result Details

Bryn Dowsi Mudstone

Computer Code: BDO Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Llandovery Epoch (SL) — Llandovery Epoch (SL)
Lithological Description: Mudstones - dark grey. Underlying unit grey silty mudstones with sandstones, overlying unit pale mudstones.
Definition of Lower Boundary: Not defined.
Definition of Upper Boundary: Not defined.
Thickness: 50 - 120 metres.
Geographical Limits: Not defined.
Parent Unit: Not Entered (?)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Sheet 94. (Top of section, base not exposed). 
Reference(s):
Warren, P T, Price, D, Nutt, M J C and Smith, E G. 1984. Geology of the country around Rhyl and Denbigh. Memoir for 1:50 000 geological sheets 95 and 107 and parts of sheets 94 and 106. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E106