The BGS Lexicon of Named Rock Units — Result Details

Stainmore Formation

Computer Code: SMGP Preferred Map Code: ST
Status Code: Full
Age range: Namurian Stage (CN) — Namurian Stage (CN)
Lithological Description: Cyclical repetition of sandstones, siltstones, mudstones, thin limestones and some coals.
Definition of Lower Boundary: Conformable: taken at the top of the uppermost limestone beds of the Great Limestone Member, which are overlain by a sequence of dark grey siltstones and mudstones at the base of the Stainmore Formation.
Definition of Upper Boundary: Conformable: base of Subcrenatum Marine Band or equivalent.
Thickness: To 1000m
Geographical Limits: Northeast England.
Parent Unit: Yoredale Group (YORE)
Previous Name(s): Millstone Grit And Upper Limestone Group (-2433)
Hensingham Group [Obsolete Name And Code: Use SMGP] (HGP)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Argill Beck (base) and Mousegill Beck (top): section NY81SW/7 of Burgess, I C and Holliday, D W, 1979, p43. 
Reference(s):
Burgess, I C and Holliday, D W. 1979. Geology of the country around Brough-under-Stainmore. Memoir for 1:50 000 geological sheet 31 and parts of sheets 25 and 30. Geological Survey of Great Britain (England and Wales). [London: HMSO.] 131pp. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E013 E049 E010 E040 E041 E020 E014