| Computer Code: |
PKB |
Preferred Map Code: |
PKB |
| Status Code: |
Full |
| Age range: |
Wenlock Epoch (SW)
— Wenlock Epoch (SW) |
| Lithological Description: |
Alternating beds of grey feldspathic, medium-grained turbiditic sandstone and grey siltstone with beds of grey laminated siltstone and silty mudstone. Sandstone beds carry washed fossil debris, mainly of molluscs. |
| Definition of Lower Boundary: |
Presumed transitional with underlying Ponesk Burn Formation, but actual boundary is a fault. |
| Definition of Upper Boundary: |
Base of lowest thick fine-grained greywacke bed of the Castle Formation. |
| Thickness: |
850m |
| Geographical Limits: |
Muirkirk to Strathaven area, Strathclyde region, Central Scotland. |
| Parent Unit: |
Priesthill Group (Cf Hagshaw Group) (PRH)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Partial Type Section |
Exposures in Patrick Burn, near Priesthill. |
| Reference(s): |
| Jennings, J S. Not published. The geology of the eastern part of the Lesmahagow Inlier. Ph.D.Thesis, University of Edinburgh, 1961. |
| Walton, E K, 1965. "In" Craig, G Y, (Editor). The Geology of Scotland: Lower Palaeozoic rocks. Oliver and Boyd, Edinburgh, 161-227. |
| Paterson, I B, McAdam, A D and MacPherson, K A T. 1998. Geology of the Hamilton district. Memoir of the British Geological Survey, Sheet 23W (Scotland). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
S023
|
