The BGS Lexicon of Named Rock Units — Result Details

Langdale Member

Computer Code: LANG Preferred Map Code: notEntered
Status Code: Full
Age range: Callovian Age (JC) — Callovian Age (JC)
Lithological Description: Comprises up to 15 m of massive bedded, silty sandstone, laminated and bioturbated, in part; ripple cross-lamination is present. Ammonites indicate a Coronatum Zone age (Page, 1989).
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: Up to 15 m.
Geographical Limits: none recorded or not applicable
Parent Unit: Osgodby Formation (OSBY)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Barron, A J M, Lott, G K, and Riding, J B. 2012. Stratigraphical framework for the Middle Jurassic strata of Great Britain and the adjoining continental shelf. British Geological Survey Research Report RR/11/06. 
Page, K N. 1989. A stratigraphic revision for the English Lower Callovian. Proceedings of the Geologists' Association, Vol.100, 363-382. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable