The BGS Lexicon of Named Rock Units — Result Details

Patrick Burn Formation

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