The BGS Lexicon of Named Rock Units — Result Details

Nottage Crag Grit

Computer Code: NOT Preferred Map Code: Not
Status Code: Full
Age range: Arnsbergian Substage (CG) — Arnsbergian Substage (CG)
Lithological Description: Sandstone, pale orange-brown, coarse- to very coarse-grained, very thick-bedded; typically low-angle tabular planar-bedded; feeble parallel laminations; sporadic trough cross-stratification. NOTE: Nottage Crag Grit is a very prominent feature-forming delta top sandstone within a siltstone/fine-grained sandstone interbedded, slumped delta slope formation.
Definition of Lower Boundary: Sharp base to the coarse-grained sandstone of the Nottage Crag Grit overlying siltstones with fine-grained sandstone beds of the Claughton Member.
Definition of Upper Boundary: Not exposed; sandstones of the Nottage Crag Grit are overlain by siltstone of the Claughton Moor Siltstones.
Thickness: c.40m
Geographical Limits: Claughton area of Lancaster Fells.
Parent Unit: Claughton Member (CLAU)
Previous Name(s): none recorded or not applicable
Alternative Name(s): Crossdale Grit
Stratotypes:
Type Area  Numerous small crag, pit and stream exposures on Nottage Crag, up to 6m seen at any one place, eg SD 5636 6536 
Type Area  Nottage Crag, Claughton. 
Reference(s):
Brandon, A, Aitkenhead, N, Crofts, R G, Ellison, R A, Evans, D J and Riley, JN J, 1998. Geology of the country around Lancaster. Memoir of the British Geological Survey, Sheet 59 (England and Wales). 
Slinger, F C, 1936. Millstone Grit and glacial geology of Caton Moor near Lancaster. Report of the British Association for the Advancement of Science, Blackpool 1936, 345. 
Moseley, F, 1954. The Namurian of the Lancaster Fells. Quarterly Journal of the Geological Society of London, Vol.109, 423-454. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E059