The BGS Lexicon of Named Rock Units — Result Details

Habberley Shale Formation

Computer Code: HBY Preferred Map Code: Hby
Status Code: Pending Upgrade
Age range: Tremadoc Series (O1) — Tremadoc Series (O1)
Lithological Description: Green-grey shaly mudstones, siltstones and fine-grained sandstones.
Definition of Lower Boundary: Not defined.
Definition of Upper Boundary: Defined by facies change to Stiperstones Quartzite Formation. May be non-sequence at top.
Thickness: c.800m
Geographical Limits: Not defined.
Parent Unit: Not Entered (?)
Previous Name(s): Shineton Shales (-2234)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Habberley, Shropshire. 
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