The BGS Lexicon of Named Rock Units — Result Details

Weston Flags Formation

Computer Code: WSN Preferred Map Code: Wsn
Status Code: Pending Upgrade
Age range: Abereiddian Stage (O2) — Abereiddian Stage (O2)
Lithological Description: Flaggy siltstones and fine-grained sandstones.
Definition of Lower Boundary: Underlain by Stapeley Volcanic Formation and Hope Group Shales.
Definition of Upper Boundary: Overlain by Betton Shale Formation.
Thickness: Not defined.
Geographical Limits: Not defined.
Parent Unit: Not Applicable (-)
Previous Name(s): Weston Beds (-2525)
Weston Group (-4407)
Weston Member (-4408)
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Whittard, W F. 1931. The geology of the Ordovician and Valentian rocks of the Shelve Country, Shropshire. Proceedings of the Geologists' Association, Vol.42, 322-344. 
Lapworth, C . 1887. The Ordovician rocks of Shropshire. British Association for the Advancement of Science. Report for 1886. Birmingham Meeting 662. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E165