The BGS Lexicon of Named Rock Units — Result Details

Pwll-Y-Glo Group

Computer Code: PWGP Preferred Map Code: notEntered
Status Code: Full, pending ratification
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: Shales and mudstones with bands of green micaceous grit.
Definition of Lower Boundary: Drawn at the base of the Pwll-Y-Glo Group where it rests conformably upon the Trilobite Dingle Shales.
Definition of Upper Boundary: Drawn at the conformable upward passage from the Pwll-Y-Glo Group to the micaceous grits of the Gaerfawr Group.
Thickness: 100 metres approx.
Geographical Limits: Welshpool.
Parent Unit: Not Entered (?)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Welshpool, Powys. 
Reference(s):
Wade, A, 1911. The Llandovery and associated rocks of north-eastern Montgomeryshire. Quarterly Journal of the Geological Society of London. Vol.67, p.419,428-431. 
Bancroft, B B, 1933. Correlation Tables of the stages Costonian - Onnian in England and Wales. Published by the author, Blakeney, Glos. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable