| Computer Code: |
CRS |
Preferred Map Code: |
notEntered |
| Status Code: |
Index Level |
| Age range: |
Langsettian Substage (CA)
— Langsettian Substage (CA) |
| Lithological Description: |
Medium to coarse-grained, locally pebbly sandstone, massive or cross-bedded. |
| Definition of Lower Boundary: |
The base of the first sandstone or sandstones above the Subcrenatum Marine Band (the base of the Pennine Lower Coal Measures Formation). |
| Definition of Upper Boundary: |
The top of the last main sandstone above the Subcrenatum Marine Band (the base of the Pennine Lower Coal Measures Formation) and below the Listeri Marine Band. |
| Thickness: |
Up to 55 thick. |
| Geographical Limits: |
South Yorkshire, Derbyshire, Nottinghamshire and Leicestershire. |
| Parent Unit: |
Pennine Lower Coal Measures Formation (PLCM)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
Soft Bed Flags
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Green, A H and others. 1878. Yorkshire Coalfield. Memoirs of the Geological Survey of Great Britain, 27-33. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E100
E087
E125
E112
E099
E126
E142
|
