| Computer Code: |
CRPS |
Preferred Map Code: |
CrPS |
| Status Code: |
Full |
| Age range: |
Permian Period (P)
— Permian Period (P) |
| Lithological Description: |
Reddish brown sandstone, mostly fine-grained and with some clay and silt; locally with breccia beds. Weathers to sand near surface. |
| Definition of Lower Boundary: |
Rests unconformably on Knowle Sandstone. |
| Definition of Upper Boundary: |
Overlain by Crediton Breccia; may pass laterally in places into Crediton Breccia. |
| Thickness: |
Up to 80m in Crediton area. |
| Geographical Limits: |
First mapped in Creedy Bridge area [SS 847 012]; extends westwards through and north of Crediton to the Knowle area. Not recognised in the Okehampton district (Edmonds and others, 1968). |
| Parent Unit: |
Exeter Group (EXE)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Creedy Park, Crediton, Devon. |
| Reference Section |
Aller Barton: Sand, clayey...0.1; Clay, sandy...0.1; Sand, very fine...0.5; Sand with bands of clay...0.6; Clay, silty...0.4. |
| Reference(s): |
| Edmonds, E A, Wright, J E, Beer, K E, Hawkes, J R, Fenning, P J, Freshney, E C, Lovelock, P E R, McKeown, M C, Ramsbottom, W H C, and Williams, M. 1968. Geology of the country around Okehampton. Memoir of the Geological Survey of Great Britain, Sheet 324 (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
