| Computer Code: |
CBSP |
Preferred Map Code: |
CBSP |
| Status Code: |
Full |
| Age range: |
Cambrian Period (E)
— Cambrian Period (E) |
| Lithological Description: |
Locally variable, ranging from pale grey, medium-grained, cross-bedded quartz arenite to dark maroon-grey, parallel-bedded, massive to graded graywacke sandstone. |
| Definition of Lower Boundary: |
Unexposed, but possibly a rapid transition from conglomeratic beds of the underlying Swithland Camp Member into fine-grained sandstones and siltstones at the base of the Stable Pit Member. |
| Definition of Upper Boundary: |
Unexposed, but probably an upwards fining transition to grey, slaty mudrocks of the overlying Swithland Formation. |
| Thickness: |
0 - 30 m. |
| Geographical Limits: |
Outcrops discontinuously between Stable Pit and the Brand Hills. |
| Parent Unit: |
Brand Hills Formation (BRHI)
|
| Previous Name(s): |
Stable Pit Quartzite Member [Obsolete Name and Code: Use CBSP]
(-2060)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Partial Type Section |
Quartz arenite facies. Stable pit, Bradgate Park. |
| Partial Type Section |
Greywacke/sandstone facies. Brand Hills, at 'The Brand' estate. |
| Reference(s): |
| Worssam, B C and Old, R A, 1988. Geology of the country around Coalville. Memoir of the British Geological Survey, Sheet 155 (England and Wales) |
| McIlroy, D, Brasier, M D and Moseley J. 1998. The Proterozoic - Cambrian transition within the 'Charnian Supergroup' of central England and the antiquity of the Ediacara fauna. Journal of the Geological Society of London, Vol. 155, 401 - 413. |
| Moseley, J and Ford, T D, 1985. A stratigraphic revision of the Late Precambrian rocks of Charnwood Forest, Leicestershire. Mercian Geologist, Vol.10(I), 1-18. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E155
|
