| Computer Code: |
EDSH |
Preferred Map Code: |
EDSH |
| Status Code: |
Full |
| Age range: |
Permian Period (P)
— Permian Period (P) |
| Lithological Description: |
Red shales and mudstones with local beds of gypsum and anhydrite, rare dolomitic limestones. |
| Definition of Lower Boundary: |
Conformable base on Penrith Sandstone Formation. |
| Definition of Upper Boundary: |
Conformable upward passage to St Bees Sandstone Formation. |
| Thickness: |
Up to c.100m |
| Geographical Limits: |
none recorded or not applicable
|
| Parent Unit: |
Cumbrian Coast Group (CCO)
|
| Previous Name(s): |
St Bees Shales [Obsolete Name and Code: Use EDSH]
(-227)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Langwathby Borehole. |
| Reference(s): |
| Arthurton, R S. 1971. The Permian evaporites of the Langwathby Borehole, Cumberland. Report of the Institute of Geological Sciences. 71/17. |
| Burgess, I C. 1968. In Annual Report, Institute of Geological Sciences, 1967. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E023
E024
E018
E040
E031
|
