The BGS Lexicon of Named Rock Units — Result Details

Bellmoor Member

Computer Code: BMO Preferred Map Code: BMO
Status Code: Full
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: Greywacke sandstones.
Definition of Lower Boundary: Taken at base of sandstone lithology, resting on Benan Conglomerate Formation (of Barr Group).
Definition of Upper Boundary: Taken at top of sandstone lithology, beneath Kilranny Conglomerate Member (of Balclatchie Formation).
Thickness: 90 to 140m
Geographical Limits: Girvan area, southwest Scotland.
Parent Unit: Balclatchie Formation (BCH)
Previous Name(s): Infra-Kilranny Greywackes [Obsolete Name and Code: Use BMO] (-1365)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Belllmoor Hill, between Kilranny Farm and Kennedy's Pass. Williams, 1962. 
Reference(s):
Fortey, R A, Harper, D A T, Ingham, J K, Owen, A W, Parkes, M A, Rushton, A W A and Woodcock, N H. 2000. A revised correlation of Ordovician rocks in the British Isles. Geological Society Special Report, No.24. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable