| Computer Code: |
CPGS |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Pendleian Substage (CE)
— Pendleian Substage (CE) |
| Lithological Description: |
A coarse-grained, and pebbly, feldspathic sandstone, thickly-bedded, wavy-bedded, planar cross-bedded or massive, reddened, with subordinate beds of siltstone. Pebbles of quartz and mudstone are noted. |
| Definition of Lower Boundary: |
The base of a prominent, feature-forming sandstone unit approximately 180 m above the base of the sandstones of the Pendle Grit Member. |
| Definition of Upper Boundary: |
The base of a sandstone-dominated unit of the Pendle Grit Member above the highest prominent pebbly sandstone unit within a pebbly-sandstone dominated sequence of the Copster Green Sandstone. |
| Thickness: |
135 m thick at Dinckley [SD 6884 3564], and 100 m thick at Clayton-le-Dale [SD 6726 3322]. |
| Geographical Limits: |
The Copster Green area [SD63], and the extreme south-eastern part of Garstang 50k sheet. |
| Parent Unit: |
Pendle Grit Member (PG)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Two adjacent quarries in Clayton-le-Dale expose strata apparently near the base of the unit, section [SD63SE/9] of Bridge (1988). Bridge 1988. |
| Reference Section |
Quarry at Copster Hall [SD63SE/6] Bridge, 1988. |
| Reference(s): |
| Aitkenhead, N, Bridge, D M, Riley, N J, and Kimbell, S F. 1992. Geology of the country around Garstang. Memoir of the British Geological Survey, Sheet 67 (England and Wales) |
| Bridge, D M. 1988. Geology of the area around Hurst Green and Wilpshire. British Geological Survey Technical Report WA/87/43. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E067
|
