| Computer Code: |
KRS |
Preferred Map Code: |
Krs |
| Status Code: |
Full |
| Age range: |
Asturian Substage (CAS)
— Stephanian Stage (CS) |
| Lithological Description: |
Redbed sequence; mudstone dominated in lower part but becoming increasingly arenaceous towards top. Thin Spirorbis limestone beds at some levels. Impersistent conglomerates in upper part. |
| Definition of Lower Boundary: |
Taken immediately above the sandstone unit named informally as the Arley and Exhall sandstones at the top of the Whitacre Member. |
| Definition of Upper Boundary: |
Taken at the highest mappable sandstone (Corley Sandstone) beneath the basal argillaceous sequence of the overlying Allesley Member. |
| Thickness: |
Range 197m-306m. Mean 258m |
| Geographical Limits: |
Warwickshire Coalfield (northern part) sheet 169. Also likely to extend in the subcrop across the southern part of the Warwickshire Coalfield. (sheet 184). |
| Parent Unit: |
Salop Formation (SAL)
|
| Previous Name(s): |
Coventry Sandstone (middle part) [Obsolete Name and Code: Use KRS]
(-2881)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Warwickshire Coalfield; centred on the village of Corley (SP 30 85), extending from the coalfield Western Boundary Fault into northwest Coventry (poorly exposed throughout). |
| Reference Section |
Staircase Lane Borehole SP38SW/97 uncored but with good geophysical signature. Base 363m below surface; top 78m below surface. |
| Reference Section |
Cliff section; roadside exposure 200m northeast of Corley village exposes sandstones in the upper part of the Member (Corley Sandstone). |
| Reference(s): |
| Bridge, D M, Carney, J N, Lawley, R S, and Rushton, A W A. 1998. Geology of the country around Coventry and Nuneaton. Memoir of the British Geological Survey, Sheet 169 (England and Wales). |
| Old, R A, 1990. Geology of the Coventry area. British Geological Survey Technical Report WA/89/29. |
| Eastwood, T, Gibson, W, Cantrill, T C, and Whitehead, T H. 1923. The geology of country around Coventry, including an account of the Carboniferous rocks of the Warwickshire Coalfield. Memoir of the Geological Survey of Great Britain, Sheet 169. (England and Wales). |
| Powell, J H, Chisholm, JI, Bridge, D M, Rees, J G, Glover, B W and Besly, B M. 2000. Stratigraphical framework for Westphalian to Early Permian red-bed successions of the Pennine Basin. British Geological Survey Technical Report WA/99/10. |
| Old, R A, Sumbler, M G and Ambrose, K, 1987. Geology of the country around Warwick. Memoir of the British Geological Survey, Sheet 184 (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E169
|
