| Computer Code: |
RSD |
Preferred Map Code: |
RSD |
| Status Code: |
Full |
| Age range: |
Ludlow Epoch (SU)
— Ludlow Epoch (SU) |
| Lithological Description: |
[Obsolete: use BND]
Sandstone beds to 75cm thick within siltstone and mudstone sequence of the Bannisdale Formation. |
| Definition of Lower Boundary: |
Incoming of sandstone into the Bannisdale sequence. Interdigitates with siltstones. |
| Definition of Upper Boundary: |
Transitional into Bannisdale Formation, siltstone and mudstone. |
| Thickness: |
0 - 900m |
| Geographical Limits: |
Southern Lake District. |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Rusland Valley, about 5km northwest of Newby Bridge. |
| Reference(s): |
| Soper, N J, 1993. Geology of 1:25,000 Sheet SD38. British Geological Survey Technical Report, WA/93/16. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E038
|
