The BGS Lexicon of Named Rock Units — Result Details

Skelgill Formation

Computer Code: SKB Preferred Map Code: SKB
Status Code: Full
Age range: Rhuddanian Age (SR) — Aeronian Age (SA)
Lithological Description: Laminated mudstone with calcareous laminae. Thin, impure limestone at base.
Definition of Lower Boundary: Unconformably overlies the Red Gill Formation of the Dent Group.
Definition of Upper Boundary: Conformably overlain by the Browgill Formation.
Thickness: 20m+
Geographical Limits: Southern Lake District and northwest Pennines.
Parent Unit: Stockdale Group (STK)
Previous Name(s): Skelgill Member (-4885)
Skelgill Beds (-1823)
Graptiliferous Mudstones (-1184)
Skelgill Shales [Obsolete Name And Code: Use SKB] (SGSH)
Alternative Name(s): none recorded or not applicable
Type Section  Holbeck Gill, upstream from High Skelgill Farm. 
Moseley F. 1984. Lower Palaeozoic lithostratigraphical classification in the English Lake District. Geological Journal, Vol. 19, p. 239-247. 
Harkness, R and Nicholson, H A, 1877. On the strata and their fossil contents between the Borrowdale Series of the north of England and the Coniston Flags. Quarterly Journal of the Geological Society of London, Vol.33, p.461-484. 
Marr, J E and Nicholson, H A, 1888. The Stockdale Shales. Quarterly Journal of the Geological Society of London, Vol.44, p.654-732. 
Hutt, J E, 1974. The Llandovery graptolites of the English Lake District Pt.1. Palaeontographical Society Monograph No.540, p.1-56. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E038 E039 E031