The BGS Lexicon of Named Rock Units — Result Details

Balclatchie Formation

Computer Code: BCH Preferred Map Code: Bch
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 (-2584)
Balclatchie Conglomerate [Obsolete Name And Code: Use BCH] (BBCG)
Balclatchie Beds (-3823)
Alternative Name(s): none recorded or not applicable
Reference Section  Coast at Kennedy's Pass, Girvan. 
Type Section  Sheet SO07 
Type Section  Penwhapple Burn, Balclatchie Bridge. 
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