The BGS Lexicon of Named Rock Units — Result Details

Wet Sleddale Andesite Formation

Computer Code: WETS Preferred Map Code: WetS
Status Code: Full
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: Andesite and basaltic andesite sheets with thin intercalations of bedded volcaniclastic rocks.
Definition of Lower Boundary: Taken at the base of the lowest andesite sheet overlying the bedded volcaniclastic sandstone succession of the Seathwaite Fell Sandstone Formatrion.
Definition of Upper Boundary: Defined by the base of the overlying Lincomb Tarns Tuff Formation.
Thickness: Possibly up to 1200m, much faulted.
Geographical Limits: Longsleddale to Wet Sleddale, eastern Lake District, Cumbria.
Parent Unit: Borrowdale Volcanic Group (BVG)
Previous Name(s): Wet Sleddale Formation (-2526)
Alternative Name(s): none recorded or not applicable
Type Area  Fellside from Tod Crags south to little Saddle Crag, Shap Fells, Cumbria. 
Millward, D, 2002. Geology of the area between Haweswater and Shap. British Geological Survey Research Report RR/02/02 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E030 E039