The BGS Lexicon of Named Rock Units — Result Details
Balclatchie Formation
Computer Code: | BCH | Preferred Map Code: | Bch |
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Status Code: | Full | ||
Age range: | Caradoc Series (O4) — Caradoc Series (O4) | ||
Lithological Description: | Blue-grey nodular mudstone, siltstone and impersistent conglomerate units. | ||
Definition of Lower Boundary: | Rests conformably on Benan Conglomerate (Barr Group). | ||
Definition of Upper Boundary: | Overlain conformably by the Ardwell Formation. | ||
Thickness: | c.300m | ||
Geographical Limits: | Girvan District, southwest Scotland. | ||
Parent Unit: | Ardwell Subgroup (AWL) | ||
Previous Name(s): | Balclatchie Mudstones [Obsolete Name And Code: Use BCH]
(BBM)
Balclatchie Group [Obsolete Name and Code: Use BCH] (-2584) Balclatchie Beds [Obsolete Name and Code: Use PMP, BCH] (-3823) Balclatchie Conglomerate [Obsolete Name And Code: Use BCH] (BBCG) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Penwhapple Burn, Balclatchie Bridge. | ||
Type Section | Sheet SO07 | ||
Reference Section | Coast at Kennedy's Pass, Girvan. | ||
Reference(s): | |||
Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666. | |||
Williams, A, 1962. The Barr and Lower Ardmillan Series (Caradoc) of the Girvan district, southwest Ayrshire, with descriptions of the Brachiopoda. Memoir of the Geological Society of London, No.3. | |||
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. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S007 S008 |