The BGS Lexicon of Named Rock Units — Result Details

Dove Crag Tuff Member

Computer Code: DOCR Preferred Map Code: DoCr
Status Code: Full
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: Andesitic lapilli-tuff and tuff, in part welded, with eutaxitic texture.
Definition of Lower Boundary: Slight unconformity on bedded volcaniclastic sandstone (Deepdale Sandstone Formation).
Definition of Upper Boundary: Not preserved (Hart Crag) or intruded by an andesite sill (Dove Crag).
Thickness: 45m (maximum)
Geographical Limits: Hart Crag and Dove Crag, northeastern Lake District (between Grasmere and Patterdale).
Parent Unit: Deepdale Sandstone Formation (DPD)
Previous Name(s): Dove Crag Member (-3369)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  (Deepdale Formation). Hart Crag, 4.35km southwest of Deepdale. 
Reference Section  Dove Crag, 4.5km southwest of Deepdale. 
Reference(s):
Woodhall, D G, 1998. The geology of the Wythburn, Thirlmere and Fairfield areas of the north-east Lake District. British Geological Survey Technical Report WA/98/07. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E029