| Computer Code: |
BBU |
Preferred Map Code: |
BBu |
| Status Code: |
Index Level |
| Age range: |
Langsettian Substage (CA)
— Langsettian Substage (CA) |
| 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 Lower Coal Measures Formation (PLCM)
|
| Previous Name(s): |
Widdrington Main Coal (Rothbury Area) [Obsolete Name And Code: Use BBU]
(WIMC)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Scientific Department, Coal Survey. 1957. Northumberland Coalfield Seam Maps. Bottom Busty Seam. National Coal Board. |
| Mills, D A C and Holliday, D W. 1998. Geology of the district around Newcastle upon Tyne, Gateshead and Consett. Memoir of the British Geological survey sheet 20 (England and Wales). |
| Scientific Department, Coal Survey. 1959. Durham Coalfield Seam Maps. Busty Seams. National Coal Board. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E010
E014
E015
E020
E026
E027
E032
E009
|
