| Computer Code: |
RFQ |
Preferred Map Code: |
RFQ |
| Status Code: |
Index Level |
| Age range: |
Duckmantian Substage (CB)
— Duckmantian Substage (CB) |
| Lithological Description: |
Coal. |
| Definition of Lower Boundary: |
none recorded or not applicable
|
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
none recorded or not applicable
|
| Parent Unit: |
Pennine Middle Coal Measures Formation (PMCM)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Smith, D B and Francis, E A. 1967. Geology of the country between Durham and West Hartlepool. Memoir of the Geological Survey of Great Britain, Sheet 27 (England and Wales). |
| Smith, D B, 1994. Geology of the country around Sunderland. Memoir of the British Geological Survey, Sheet 21, (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E010
E014
E020
E021
E026
E027
|
