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
|