The BGS Lexicon of Named Rock Units — Result Details

Brownber Formation

Computer Code: BNBF Preferred Map Code: BBF
Status Code: Pending Upgrade
Age range: Chadian Substage (CI) — Arundian Substage (CJ)
Lithological Description: Interbedded sandstones (fine-grained, pale brown, laminated in part), limestones (calcarenites grainstones, ooidal in part) and dolomites (yellow, flaggy) containing abundant quartz pebbles near top (between underlying and overlying dark grey bioclastic limestones of the Coupland Sike and Breakyneck Scar limestones respectively).
Definition of Lower Boundary: Not defined.
Definition of Upper Boundary: Not defined.
Thickness: 15 metres, which is approx. thickness to neighbourhood of Raisbeck, beyond which it thickens to c.80 metres at west edge of NY60NW where it is a largely hard, laminated sandstone formation.
Geographical Limits: none recorded or not applicable
Parent Unit: Great Scar Limestone Group (GSCL)
Previous Name(s): Brownber Pebble Bed (-710)
Brownber Pebble Beds [Obsolete Name And Code: Use BNBF] (BRP)
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Pattison, J. 1990. Geology of the Orton and Sunbiggin Tarn districts. Geological notes and local details for 1:10,000 Sheets NY60NW and NY60NE and part of 1:50,000 Sheets 30 (Appleby), 31 (Brough), 39 (Kendal) and 40 (Kirkby Stephen). British Geological Survey Onshore Geology Series, Technical Report, WA/90/12. 
Aveline, W T, 1888. The geology of the country around Kendal, Sedbergh, Bowness and Tebay, Sheet 98NE. Memoir of the Geological Survey (England and Wales). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E040