| Computer Code: |
SGIL |
Preferred Map Code: |
Sgil |
| Status Code: |
Full |
| Age range: |
Caradoc Series (O4)
— Caradoc Series (O4) |
| Lithological Description: |
Rhyolitic lapilli-tuff and volcaniclastic sandstone |
| Definition of Lower Boundary: |
Lower boundary is nowhere seen becouse of faulting |
| Definition of Upper Boundary: |
Defined by the base of the overlying silicic tuff of the Knock Pike Formation |
| Thickness: |
About 300m |
| Geographical Limits: |
In the Cross Fell Inlier, Cumbria |
| Parent Unit: |
Borrowdale Volcanic Group (BVG)
|
| Previous Name(s): |
Studgill Formation [Obsolete Name and Code: Use SGIL]
(-3670)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Northeast face of Dufton Pike, Cross Fell Inlier, Cumbria Burgess and Holliday [1979] |
| Reference(s): |
| Burgess, I C, and Holliday, D W. 1979. Geology of the country around Brough-under-Stainmore. Memoir for 1:50 000 geological sheet 31 and parts of sheets 25 and 30. Geological Survey of Great Britain (England and Wales). (London: HMSO.) 131 pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E024
E031
E030
|
