The BGS Lexicon of Named Rock Units — Result Details

Confinis Formation

Computer Code: CNF Preferred Map Code: CNF
Status Code: Full
Age range: Abereiddian Stage (O2) — Abereiddian Stage (O2)
Lithological Description: Blue-grey calcareous flaggy sandstone.
Definition of Lower Boundary: Overlies and is partly lateral equivalent of Auchensoul Bridge Mudstone.
Definition of Upper Boundary: Overlain conformably by the Stinchar Limestone Formation.
Thickness: 50m
Geographical Limits: Stinchar Valley area, Girvan.
Parent Unit: Barr Group (BARR)
Previous Name(s): Orthis Confinis Flags [Obsolete Name And Code: Use CNF] (OCF)
Confinis Flags (-4559)
Confinis Flags Formation (-3314)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Benan Burn. 
Type Area  Kirkdominae, Barr, Sheet SO08W. 
Reference(s):
Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666. 
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. 
Ingham, J K, Ross, R J and Tripp, R P. 1991. The trilobite fauna of the Middle Ordovician Doularg Formation of the Girvan district, Scotland, and its palaeoenvironmental significance. Transactions of the Royal Society of Edinburgh, Vol.82(1), 27-54. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S008