The BGS Lexicon of Named Rock Units — Result Details

Pen y Foel Formation

Computer Code: PFOEL Preferred Map Code: notEntered
Status Code: Full
Age range: Floian Age (OFL) — Darriwilian Age (ODW)
Lithological Description: Thin to thick bedded and massive quartzitic sandstone and conglomerate.
Definition of Lower Boundary: Unconformable on Neoproterozoic rocks, e.g. Coedana Granite.
Definition of Upper Boundary: Likely conformable contact with overlying Capel Parc Formation (CAPC).
Thickness: none recorded or not applicable
Geographical Limits: Anglesey.
Parent Unit: Llyn Alaw Group (ALAW)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
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:
none recorded or not applicable