| Computer Code: |
KNPK |
Preferred Map Code: |
KnPk |
| Status Code: |
Full |
| Age range: |
Caradoc Series (O4)
— Caradoc Series (O4) |
| Lithological Description: |
Pale grey, densely welded silicic tuff and lapilli-tuff with a very prominent parataxitic texture; there may be some lava. |
| Definition of Lower Boundary: |
Taken at the base of densely welded rhyolitic tuff, resting on a bedded, mixed sequence of volcaniclastic sandstone and rhyolitic tuff of the Studgill Tuff Formation. |
| Definition of Upper Boundary: |
Defined by the base of the overlying mixed succession of silicic tuff and volcaniclastic sandstone of the Harthwaite Tuff Formation. |
| Thickness: |
About 500m |
| Geographical Limits: |
Restricted to the Cross Fell Inlier, Cumbria. |
| Parent Unit: |
Borrowdale Volcanic Group (BVG)
|
| Previous Name(s): |
Knock Pike Formation [Obsolete Name and Code: Use KNPK]
(-1629)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Partial Type Section |
Roadstone Quarry, NE side of Knock Pike 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: |
|
E030
E024
E031
|
