The BGS Lexicon of Named Rock Units — Result Details

Coupland Sike Limestone Member

Computer Code: COSL Preferred Map Code: CoSL
Status Code: Full
Age range: Chadian Substage (CI) — Chadian Substage (CI)
Lithological Description: Packstone, dark grey, well bedded, blocky, partly dolomitized and bituminous, with the common occurrence of the coral Dorlodotia. Cyclically interbedded with thin mudstone and siltstone beds. The limestone beds are a fairly constant 0.75m thick.
Definition of Lower Boundary: At the base of limestone, overlying a 5m unit of interbedded sandstone and mudstone, which forms a topographic depression at the top of the underlying Park Hill Limestone Member. The junction is nowhere exposed now, but the interbedded unit was formerly seen in a road cutting at [NY 7248 0448] during the construction of the Ravenstonedale By-pass, and the junction was recorded in M6 Site Investigation Boreholes at [NY 5885 0998]
Definition of Upper Boundary: Taken at the base of the overlying Brownber Formation, where there is a change from dark grey cyclically bedded limestone to pale grey ooidal limestone and calcarenite.
Thickness: 40 to 50m
Geographical Limits: Ravenstonedale, Cumbria between the M6 and the Dent Fault zone, south of Kirkby Stephen.
Parent Unit: Scandal Beck Limestone Formation (SCBL)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  A stone quarry (working in 2005) on the B6261 road west of Orton village, Cumbria. Pattison (1990). 
Type Section  Coupland Sike, Ravenstonedale, Cumbria. (Base of section). 
Reference Section  Slapestones Quarry (disused), Raisbeck, Cumbria. Pattison (1990). 
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:
E040