The BGS Lexicon of Named Rock Units — Result Details

Plantinhead Member

Stratotypes:
Computer Code:	PLF	Preferred Map Code:	PLF
Status Code:	Full
Age range:	Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description:	Grey and purple flaggy calcareous and dark siltstone (with graptolites).
Definition of Lower Boundary:	Not seen, thought to rest on Craighead Limestone Formation.
Definition of Upper Boundary:	Faulted.
Thickness:	50m+ (estimate).
Geographical Limits:	Girvan area, southwest Scotland.
Parent Unit:	Ardwell Farm Formation (ARD)
Previous Name(s):	Plantinhead Formation [Obsolete Name and Code: Use PLF] (-3613) Plantinhead Flags [Obsolete Name and Code: Use PLF] (-452)
Alternative Name(s):	none recorded or not applicable
Type Section	Plantinhead Burn, Craighead Inlier, Girvan. Ingham (in Fortey et al. 2000)
Reference(s):
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.
Lamont, A. 1935. The Drummuck Group, Girvan; A stratigraphical revision, with descriptions of new fossils from the lower part of the group. Transactions of the Geological Society of Glasgow, Vol.19, 288-334.
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