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
|