The BGS Lexicon of Named Rock Units — Result Details
Shalloch Formation
Computer Code: | SLH | Preferred Map Code: | SLH |
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Status Code: | Full | ||
Age range: | Pusgillian Stage (OP) — Cautleyan Stage (OU) | ||
Lithological Description: | Flaggy wacke and siltstone turbidites. | ||
Definition of Lower Boundary: | Conformable on the Mill Formation. | ||
Definition of Upper Boundary: | Conformably overlain by the Auldthorns Formation, which is part of the Drummock Subgroup. | ||
Thickness: | About 300 m thick. | ||
Geographical Limits: | Girvan area, south-west Scotland. | ||
Parent Unit: | Whitehouse Subgroup (WHE) | ||
Previous Name(s): | Shalloch Flagstone Formation [Obsolete Name and Code: Use SLH]
(-4331)
Barren Flagstones [Obsolete Name and Code: Use SLH] (-3035) |
||
Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Coast, Woodland Point, south of Girvan. | ||
Reference(s): | |||
Ingham, J K, 1978. Geology of a continental margin 2: Middle and late Ordovician transgression, Girvan. "In" Bones, D R and Leake, B E. Crustal Evolution in North Western Britain and Adjacent Regions. Geological Journal Special Issue, No.10. p.163-176. | |||
Harper, D A T, 1984. Brachiopods from the Upper Ardmillan succession (Ordovician) of the Girvan district, Scotland. Part 1. Monograph of the Palaeontographical Society, London. 1-78 (Publication No.565, part of Vol.136 for 1982). | |||
Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S008 S007 |