The BGS Lexicon of Named Rock Units — Result Details

Bell Crags Breccia Member

Computer Code: BCR Preferred Map Code: BCr
Status Code: Full
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: Matrix-supported, poorly supported pebble to cobble breccia, fining upwards into pebbly sandstone.
Definition of Lower Boundary: Erosional contact on bedded sandstone within the Seathwaite Fell Sandstone Formation.
Definition of Upper Boundary: Erosional contact with disturbed siltstone and sandstone, within the Seathwaite Fell Sandstone Formation.
Thickness: 45 - 60m
Geographical Limits: North Lake District, between Borrowdale and Thirlmere.
Parent Unit: Seathwaite Fell Sandstone Formation (SET)
Previous Name(s): Bell Crags Member [Obsolete Name and Code: Use BCR] (-2588)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Crags on Bell Crags, near Thirlmere. 
Reference(s):
Kneller B C and McConnell, B J . 1993. The Seathwaite Fell Formation in the central Fells. British Geological Survey Technical Report WA/93/43 
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