| Computer Code: |
ACR |
Preferred Map Code: |
ACR |
| Status Code: |
Index Level |
| Age range: |
Bolsovian Substage (CC)
— Bolsovian Substage (CC) |
| Lithological Description: |
Sandstone with subsidiary siltstone. |
| Definition of Lower Boundary: |
none recorded or not applicable
|
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
To c.10m |
| Geographical Limits: |
West and south Yorkshire [Ackton, near Wakefield]. |
| Parent Unit: |
Pennine Middle Coal Measures Formation (PMCM)
|
| Previous Name(s): |
Warmfield Rock [Obsolete Name: See Revision Section]
(WA)
|
| Alternative Name(s): |
Treeton Rock [Obsolete]
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| none recorded or not applicable |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E078
|
