The BGS Lexicon of Named Rock Units — Result Details

Redhouse Sandstone Formation

Computer Code: RES Preferred Map Code: notEntered
Status Code: Full
Age range: Courceyan Substage (CF) — Courceyan Substage (CF)
Lithological Description: Pebbly sandstone, conglomerates especially near the base, fine- to medium- sandstone, siltstone and mudstone, typically red-brown with minor green mottling.The formation is broadly upward fining, with individual beds internally upward fining too, the cycles average 6.7 m thick, and diminish in thickness upwards. Carbonate concretions of calcrete may be present at the top of some cycles.
Definition of Lower Boundary: Not seen, but probably unconformable upon pre-Carboniferous strata.
Definition of Upper Boundary: Conformable passage, with the base of the overlying Rue Hill Dolomite Formation taken at the base of the lowest dolostone bed containing bioclasts, and underlain by reddish-brown pebbly sandstone of the Redhouse Sandstone Formation.
Thickness: Measured as 170.3 m thick in the Caldon Low Borehole, although the base is not proved.
Geographical Limits: Off-shelf to the Derbyshire High and Staffordshire Shelf, in the Ashbourne and Cheadle District, but in the subsurface only.
Parent Unit: Not Applicable (-)
Previous Name(s): Redhouse Sandstones (-4295)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Caldon Low Borehole (SK04NE/36), between 365.07 and 535.37 m. 
Reference(s):
Welsh, A and Owens, B. 1983. Early Dinantian miospore assemblages from the Caldon Low Borehole, Staffordshire, England. Pollen Spores, vol. 25, 253-264. 
Aitkenhead, N and Chisholm, J I. 1982. A standard nomenclature for the Dinantian formations of the Peak District of Derbshire and Staffordshire. Report of the Institute of Geological Sciences, No.82/8. 
Chisholm, J I, Charsley, T J and Aitkenhead, N. 1988. Geology of the country around Ashbourne and Cheadle. Memoir of the British Geological Survey, Sheet 124 (England and Wales). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E124