| Computer Code: |
RAVO |
Preferred Map Code: |
RaV |
| Status Code: |
Full |
| Age range: |
Brigantian Substage (CX)
— Brigantian Substage (CX) |
| Lithological Description: |
Chip samples indicate a sequence of olive green to brown silty carbonaceous mudstones and limestones with beds of bluish grey, pyritous tuff. |
| Definition of Lower Boundary: |
At base of the lowest tuff bed at 631m depth in Ratcliffe on Soar borehole. |
| Definition of Upper Boundary: |
At top of the highest tuff bed, at 507m depth in Ratcliffe on Soar borehole |
| Thickness: |
124m |
| Geographical Limits: |
Does not crop out. |
| Parent Unit: |
Widmerpool Formation (WDF)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Ratcliffe on Soar borehole, between 507m and 631m depth (not cored). |
| Reference(s): |
| Carney, J N, and Cooper, A H. 1997. Geology of the West Leake area: 1:10 000 Sheet SK52NW. British Geological Survey Technical Report WA/97/46. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E142
E141
|
