| Computer Code: |
RWD |
Preferred Map Code: |
Rwd |
| Status Code: |
Index Level |
| Age range: |
Stephanian Stage (CS)
— Stephanian Stage (CS) |
| Lithological Description: |
[Obsolete: use SAL] Brick-red mudstones, poorly-micaceous, usually calcareous, with sandstones and limestones. |
| Definition of Lower Boundary: |
Base of sequence of brick-red mudstone, poorly-micaceous, usually calcareous, with sandstone and limestone, over usually more variegated mudstone, lithic and micaceous sandstone typical of Keele Formation (red facies of Halesowen Formation). Base drawn where Radwood lithologies predominate over Keele lithologies in an interbedded transition. |
| Definition of Upper Boundary: |
Unconformably overlain by Triassic rocks. |
| Thickness: |
900m+ |
| Geographical Limits: |
Potteries Coalfield. |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
Keele Beds [Obsolete Name and Code: Use RWD, ALY, KE]
(-1947)
|
| Alternative Name(s): |
Salop Formation
|
| Stratotypes: |
| Partial Type Section |
Stream section between Radwood Copse and Madeley Manor, Staffordshire. |
| Partial Type Section |
Radwood Borehole, SJ 74 SE/28, between 204.34m and collar. |
| Partial Type Section |
Keele Park railway cutting between 80m north of bridge and 270m south of bridge to Stony Low Farm. |
| Reference(s): |
| Gibson, W G, 1925. The geology of the country around Stoke-on-Trent. Memoir of the British Geological Survey, Sheet 123, (England and Wales). |
| Rees, J G and Wilson, A A. 1998. Geology of the country around Stoke-on-Trent. Memoir of the British Geological Survey, Sheet 123 (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. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E123
|
