| Computer Code: |
LRF |
Preferred Map Code: |
LRF |
| Status Code: |
Full |
| Age range: |
Caradoc Series (O4)
— Caradoc Series (O4) |
| Lithological Description: |
[Obsolete: use FSW, LWW] Dacitic lapilli tuff. |
| Definition of Lower Boundary: |
Base of dacitic lapilli tuff. Probably unconformable, base of formation always faulted out. |
| Definition of Upper Boundary: |
Base of overlying Seathwaite Fell Sandstone Formation - volcaniclastic sandstone. |
| Thickness: |
Up to 550m |
| Geographical Limits: |
Little Langdale to Great Langdale, Cumbria. |
| 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 |
Lingmoor Fell to Little Langdale. |
| Reference(s): |
| Millward, D, Johnson, E W, Beddoe-Stephens, B, Young, B, Kneller, B C, Lee, M K, Fortey, N J, Allen, P M, Branney, M J, Cooper, D C, Hirons, S, Kokelaar, B P, Marks, R J, McConnell, B J, Merritt, J W, Molyneux, S G, Petterson, M G, Roberts, B, Rundle, C C, Rushton, A W A, Scott, R W, Soper, N J, and Stone, P. 2000. Geology of the Ambleside district. Memoir of the British Geological Survey, England and Wales, Sheet 38. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E038
|
