The BGS Lexicon of Named Rock Units — Result Details

Upper Hartfell Shale Formation

Computer Code: UHBS Preferred Map Code: UHBS
Status Code: Full
Age range: Ashgill Series (OA) — Ashgill Series (OA)
Lithological Description: Pale grey mudstone with rare laminae of black hemipelagic mudstone.
Definition of Lower Boundary: Conformable on Lower Hartfell Shale Formation.
Definition of Upper Boundary: Conformably overlain by Birkhill Shale Formation
Thickness: 28m
Geographical Limits: Southern Uplands of Scotland and Longford Down Inlier, Northern Ireland.
Parent Unit: Moffat Shale Group (MFS)
Previous Name(s): Upper Hartfell Shales (-4951)
Alternative Name(s): none recorded or not applicable
Type Section  Dobb's Linn, Moffatdale, Dumfriesshire Webb et al, 1993 
Lapworth, C, 1877. The Moffat Series. Quarterly Journal of the Geological Society of London, Vol.34, 240-346. 
Webb, B C, Rushton, A W A and White, D E. 1993. Moffatdale and the upper Ettrick valley. Description of the solid geology of parts of 1:25000 sheets NT10, 11, 20 and 21. Classical Areas of British Geology. (London: British Geological Survey, HMSO.) 
Floyd, J D, 2001. The Southern Uolands Terrane: a stratigraphical review. Transactions of the Royal Society of Edinburgh: Earth Sciences, Vol.91, 349-362. 
Floyd, J D, 1996. Lithostratigraphy of the Ordovician rocks in the Southern Uplands: Crawford Group, Moffat Shale Group, Leadhills Supergroup. Transactions of the Royal Society of Edinburgh: Earth Sciences, Vol.86, 153-165. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S034 S015 S015 S017