The BGS Lexicon of Named Rock Units — Result Details

St Raven's Edge Tuff Member

Computer Code: SRE Preferred Map Code: SRE
Status Code: Full
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: A massive, eutaxitic, lithic-rich, andesitic lapilli-tuff.
Definition of Lower Boundary: Taken at the base of eutaxitic lapilli-tuff resting on volcaniclastic sandstone or bedded tuff of the Glaramara Tuff.
Definition of Upper Boundary: Taken at the abrupt change from massive lapilli-tuff to volcaniclastic sandstone.
Thickness: Up to 40 m thick.
Geographical Limits: Kirkstone Pass to Troutbeck and south of Hayeswater, eastern Lake District, Cumbria.
Parent Unit: Seathwaite Fell Sandstone Formation (SET)
Previous Name(s): St Raven's Edge Member (-540)
Alternative Name(s): none recorded or not applicable
Type Section  St Raven's Edge, eastern side of the Kirkstone Pass, Cumbria. 
Woodhall, D G. 2000. The geology of the Haweswater and Martindale areas of the north-eastern Lake District. British Geological Survey Technical Report WA/00/55. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E030 E039