| Computer Code: |
BLK |
Preferred Map Code: |
Blk |
| Status Code: |
Full |
| Age range: |
Ediacaran Period (AD)
— Ediacaran Period (AD) |
| Lithological Description: |
Green to grey, graded volcaniclastic mudstones, siltstones and sandstones with massive beds of volcaniclastic sandstone and breccia. |
| Definition of Lower Boundary: |
Sharp contact with South Quarry Breccia Member of the Ives Head Formation. |
| Definition of Upper Boundary: |
Sharply overlain by Benscliffe Breccia Member, of the Beacon Hill Tuff Formation. |
| Thickness: |
c.625m |
| Geographical Limits: |
The unit extends from Longcliffe Golf Course south to Benscliffe Wood and then north-east to Grace Dieu Warren. |
| Parent Unit: |
Blackbrook Group (CBK)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Blackbrook Quarry. |
| Reference Section |
Newhurst Quarry. |
| Reference(s): |
| Carney, J N. 1994. Geology of the Thringstone, Shepshed and Loughborough districts (SK41NW, SK41NE and SK51NW). British Geological Survey Technical Report WA/94/08. |
| 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) |
| 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: |
|
E141
|
