The BGS Lexicon of Named Rock Units — Result Details

Red Hill Limestone Formation

Computer Code: RHO Preferred Map Code: RHL
Status Code: Full
Age range: Arundian Substage (CJ) — Arundian Substage (CJ)
Lithological Description: Carbonate bioclastic, intraclastic and peloidid grainstones, coarse-grained and virtually structureless following bioturbation.
Definition of Lower Boundary: Taken at base of Algal Band in type locality and elsewhere; otherwise at upward change from fine-grained oolites/grainstones/carbonate mudstones of Martin Limestone to coarse-grained unbedded grainstone.
Definition of Upper Boundary: Base of overlying Dalton Formation.
Thickness: 20 to 60m
Geographical Limits: South Cumbria.
Parent Unit: Great Scar Limestone Group (GSCL)
Previous Name(s): Red Hill Oolite (-4860)
Alternative Name(s): none recorded or not applicable
Type Section  Red Hills Quarry, near Millom. (now partly filled in). 
Reference Section  Dunnerholme, Furness. (south-east end). 
Reference Section  Meathop Quarry, Grange-over-Sands. 
Nicholas, C, 1968. The stratigraphy and sedimentary petrology of the Lower Carboniferous rocks south west of the Lake District. Unpublished Ph.D. thesis, University of London. 
Johnson, E W, Soper, N J, Burgess, I C, Ball, D F, Beddoe-Stephens, B, Carruthers, R M, Fortey, N J, Hirons, S, Merritt, J W, Millward, D, Roberts, B, Walker, A B and Young, B. 2001. Geology of the country around Ulverston. Memoir of the British Geological Survey, England and Wales, Sheet 48. 
Rose, W C C. 1977. Geology and Hematite deposits of South Cumbria. Economic Memoir for 1:50,000 Sheet 58 and southern part of Sheet 48. Memoir of the geological Survey of Great Britain. 
Dunham, K C and Rose, W C C. 1941. Geology of the iron-ore field of south Cumberland and Furness. Geological Survey of Great Britain, Wartime Pamphlet, No.16. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: