The BGS Lexicon of Named Rock Units — Result Details

Penwhapple Formation

Computer Code: PWH Preferred Map Code: PWH
Status Code: Full
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: Grey flaggy siltstone and mudstone with a mudstone conglomerate unit.
Definition of Lower Boundary: Conformably overlies the Threemile Formation.
Definition of Upper Boundary: Conformably overlain by the Myoch Formation.
Thickness: 90m
Geographical Limits: Girvan area, southwest Scotland.
Parent Unit: Whitehouse Subgroup (WHE)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Section  Penwhapple Burn 
Harper, D A T, 1984. Brachiopods from the Upper Ardmillan succession (Ordovician) of the Girvan district, Scotland. Part 1. Monograph of the Palaeontographical Society, London. 1-78 (Publication No.565, part of Vol.136 for 1982). 
1:50K maps on which the lithostratigraphical unit is found, and map code used: