The BGS Lexicon of Named Rock Units — Result Details

Ponesk Burn Formation

Computer Code: PSKB Preferred Map Code: PSKB
Status Code: Full
Age range: Wenlock Epoch (SW) — Wenlock Epoch (SW)
Lithological Description: Alternating beds of grey, medium-grained, turbiditic sandstone (greywacke) with washed-in fossil debris of brachiopods, molluscs, trilobites etc; and grey siltstones - in some cases laminated with silty mudstone.
Definition of Lower Boundary: Not seen, formation occurs in core of anticline.
Definition of Upper Boundary: Presumed transitional with overlying greywacke/siltstone sequence of Patrick Burn Formation, but everywhere faulted.
Thickness: 200m
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
Partial Type Section  Exposures in Ponesk Burn. 
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 S015