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): Confinis Flags (-4559)
Confinis Flags Formation (-3314)
Orthis Confinis Flags [Obsolete Name And Code: Use CNF] (OCF)
Alternative Name(s): none recorded or not applicable
Type Area  Kirkdominae, Barr, Sheet SO08W. 
Type Section  Benan Burn. 
Lapworth, C, 1882. The Girvan Succession. Quarterly Journal of the Geological Society of London, Vol. 38, 537-666. 
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. 
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: