The BGS Lexicon of Named Rock Units — Result Details

Radcliffe Member

Computer Code: RDCF Preferred Map Code: Rdc
Status Code: Full
Age range: Anisian Age (TA) — Anisian Age (TA)
Lithological Description: Mudstone, siltstone and very fine-grained sandstone, finely interlaminated; pinkish red or red-brown, subordinately green.
Definition of Lower Boundary: Gradational and conformable; taken at the top of highest significant sandstone bed of the underlying Tarporley Siltstone Formation.
Definition of Upper Boundary: Gradational; taken at the transition from the laminated beds of the Radcliffe Member into blocky, deformed mudstone of the Gunthorpe Member.
Thickness: 12 to 19 m (16 m in the Cropwell Bridge Borehole, SK63NE/28).
Geographical Limits: Mappable at the surface in south Nottinghamshire and Leicestershire. Upper boundary coincides with a widespread geophysical log marker traceable throughout the East Midlands and northeast England.
Parent Unit: Sidmouth Mudstone Formation (SIM)
Previous Name(s): Radcliffe Formation [Obsolete Name and Code: Use RDCF] (-4857)
Alternative Name(s): none recorded or not applicable
Type Section  Cropwell Bridge Borehole (SK63NE/28), Cropwell Bishop, Notts.: depth range 154.7 m to 170.7 m. Curated core held at BGS Keyworth. 
Reference Section  Fulbeck 1 Borehole (SK85SE/25), Fulbeck, Lincs.: depth range 287.3 m to 301.6 m. Curated core held at BGS Keyworth. 
Reference Section  Surface section in a river cliff on the southeast bank of the River Trent at Radcliffe-on-Trent. Complete (12 m) section, base and top poorly exposed. 
Elliott, R E 1961. The stratigraphy of the Keuper Series in southern Notinghamshire. Proceedings of the Yorkshire Geological Society, Vol.33, 197-231. 
Warrington, G, Audley-Charles, M G, Elliott, R E, Evans, W B, Ivimey-Cook, H C, Kent, P E, Robinson, P L, Shotton, F W and Taylor, F M. 1980. A correlation of the Triassic rocks in the British Isles. Special Report of the Geological Society of London, No.13. 
Howard, A S, Warrington, G, Ambrose, K, and Rees, J G. 2008. A formational framework for the Mercia Mudstone Group (Triassic) of England and Wales. British Geological Survey Research Report, RR/08/04. 
Charsley, T J, Rathbone, P A and Lowe, D J, 1990. Nottingham: A geological background for planning and development. British Geological Survey Technical Report WA/90/1. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E126 E127 E142 E141