The BGS Lexicon of Named Rock Units — Result Details

Norber Formation

Computer Code: NORB Preferred Map Code: NrF
Status Code: Full
Age range: Cautleyan Stage (OU) — Rawtheyan Stage (OW)
Lithological Description: Calcareous siltstones and argillaceous limestones with a shelly fauna. There is a siliceous conglomerate at the base.
Definition of Lower Boundary: Taken at the irregular base of the conglomerate in Douk Ghyll, Horton, unconformably overlying sandstones of the Ingleton Group. Elsewhere, the base of the formation is not seen.
Definition of Upper Boundary: Defined by the base of the overlying Sowerthwaite Formation.
Thickness: Up to 160m
Geographical Limits: Restricted to the Craven inliers, North Yorkshire
Parent Unit: Dent Group (DNT)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Between Norber Brow and Wharfe Gill, about 1km northeast of Austwick. Arthurton et al., 1988 
Reference Section  Douk Ghyll, Horton in Ribblesdale Arthurton et al., 1988 
Reference(s):
Arthurton, R S, Johnson, E W and Mundy, D J C. 1988. Geology of the country around Settle. Memoir of the British Geological Survey, Sheet 60 (England and Wales). 
Kneller, B C, Scott R W, Soper N J, Johnson E W and Allen P M, 1994. Lithostratigraphy of the Windermere Supergroup, Northern England. Geological Journal, Vol. 29, 219-240. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E050 E060