The BGS Lexicon of Named Rock Units — Result Details

Cae Castell Formation

Computer Code: CAEC Preferred Map Code: notEntered
Status Code: Pending Upgrade
Age range: Wenlock Epoch (SW) — Wenlock Epoch (SW)
Lithological Description: Sandstones, siltstones and subordinate mudstones.
Definition of Lower Boundary: Taken at the conformable base of the fine- to coarse-grained sandstones and pebbly sandstones of the Rhymney Grit Member, which sharply overlies the Pen-y-lan Mudstone.
Definition of Upper Boundary: Sharply and conformably overlain by the mudstones with thin sandstones and siltstones of the Cardiff Group.
Thickness: 70 to 80m
Geographical Limits: none recorded or not applicable
Parent Unit: Not Applicable (-)
Previous Name(s): Wenlock Beds [Obsolete Name and Code: Use CAEC] (-3895)
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Strahan, A, and Cantrill, T C. 1902. The geology of the South Wales Coalfield, Part III. The country around Cardiff. First Edition. Memoir of the Geological Survey, Sheet 263 [England and Wales]. 
Waters, R A and Lawrence, D J D. 1987. Geology of the South Wales Coalfield - Part III: the country around Cardiff. Memoir of the British Geological Survey, Sheet 263. (England and Wales). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E263