The BGS Lexicon of Named Rock Units — Result Details

Knipe Scar Limestone Formation

Computer Code: KNL Preferred Map Code: KNL
Status Code: Pending Upgrade
Age range: Asbian Substage (CR) — Asbian Substage (CR)
Lithological Description: Pale grey, scar-forming limestones, mostly thick-bedded biosparites and biopelsparites commonly pseudobrecciated, and probable thin siliciclastic bed, not exposed at type section.
Definition of Lower Boundary: Underlying Potts Beck Limestone comprises interbedded pale grey limestones (of those in Knipe Scar Limestone), dark grey limestones and sandstones (up to 3 metres thick).
Definition of Upper Boundary: Overlying beds are a variable sandstone/siltstone/mudstone unit between Knipe Scar and Robinson Limestones.
Thickness: 61m seen, but top 16 metres of formation not present - but exposed in sections on Limestone Scars within 1 km to east and can be seen to comprise comparable thick-bedded pale grey limestones. Thickness fairly constant along outcrop on NY60NW and NY60NE with slight eastward increase up to c.90 metres on Little Asby Scar.
Geographical Limits: Not defined.
Parent Unit: Great Scar Limestone Group (GSCL)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Great Asby Scar, 500 metres - 1000 metres north of Sunbiggin, near Orton, Cumbria, Sheet 39. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E039 E040 E030