The BGS Lexicon of Named Rock Units — Result Details

Longsleddale Member

Computer Code: LSD Preferred Map Code: Lsd
Status Code: Pending Upgrade
Age range: Cautleyan Stage (OU) — Cautleyan Stage (OU)
Lithological Description: Conglomerates and sandstones with subordinate red and green siltstones and shaly mudstones.
Definition of Lower Boundary: Unconformable upon strata of the Borrowdale Volcanic Group.
Definition of Upper Boundary: At base of Applethwaite Formation or of Stile End Formation where present.
Thickness: Maximum of 70m, thins to less than 2m at Kentmere Hall (4km to the west).
Geographical Limits: Not defined.
Parent Unit: Stile End Formation (SEN)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  600 metres north-north-west of Stockdale Farm, Longsleddale, Cumbria, Sheet 39. 
Reference(s):
McNamara, K J. 1979. The age, stratigraphy and genesis of the Coniston Limestone Group in the southern Lake District. Geological Journal, 14, 41-69. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E039