| Computer Code: |
BRECK |
Preferred Map Code: |
notEntered |
| Status Code: |
Index Level |
| Age range: |
Bolsovian Substage (CC)
— Bolsovian Substage (CC) |
| Lithological Description: |
Coal |
| Definition of Lower Boundary: |
The Dalton Rock lies some distance stratigraphically just below the base of this unit. |
| Definition of Upper Boundary: |
The Wickersley Rock lies some distance stratigraphically just below the base of this unit. |
| Thickness: |
From 0.3 m to 0.9 m thick. |
| Geographical Limits: |
The Barnsley and Sheffield districts of Yorkshire. |
| Parent Unit: |
Pennine Upper Coal Measures Formation (PUCM)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Around Hooton Roberts at SK49NE, and Listerdale at SK49SE, and in boreholes at Bramley and Maltby (see Memoir fig. 26, p. 125). Eden et al. 1957. Sheffield, BGS Memoir. |
| Reference(s): |
| Eden, R A, Stevenson, I P and Edwards, M A. 1957. Geology of the area around Sheffield, BGS Memoir (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
