The BGS Lexicon of Named Rock Units — Result Details

Assel Conglomerate Member

Computer Code: ASC Preferred Map Code: ASC
Status Code: Full
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: A localized thick conglomerate within the generally flaggy Ardwell Farm Formation.
Definition of Lower Boundary: Base of conglomerate, resting on flaggy sandstone.
Definition of Upper Boundary: Taken at top of conglomerate, overlain by flaggy sandstone.
Thickness: To 70m
Geographical Limits: Girvan area, southwest Scotland.
Parent Unit: Ardwell Farm Formation (ARD)
Previous Name(s): Assel Conglomerate (-4439)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Ground north of the Assel Water, southeast of Girvan. Williams, 1962. 
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. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable