The BGS Lexicon of Named Rock Units — Result Details

Kirkton Clay Member

Computer Code: KICL Preferred Map Code: KCL
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Clay,silt and silty sand, thinly horizontally interbedded and interlaminated rhythmically, pale yellowish brown to orange, stiff. Individual beds are generally graded. Convolute bedding is common in silt beds. The beds are stacked into packages, probably glaciomarine cyclopels, 0.3 to 0.8m thick.
Definition of Lower Boundary: Not observed, but probably comformable on the Finglack Till Formation.
Definition of Upper Boundary: Ground surface or sharp, gently undulating, unconformable contact with raised beach deposits.
Thickness: 12m
Geographical Limits: Ardersier Peninsula and the southern shore of the Inner Moray Firth.
Parent Unit: Ardersier Silts Formation (ARDS)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Section  Trenches dug into the Main Postglacial Cliffline ("Kirkton Pit"), 450m southeast of Kirkton, Ardersier, Nairnshire. Merritt et al. 1995. 
Fletcher, T P et al. 1996. Geology of the Fortrose and eastern Inverness district. Memoir of the British Geological Survey, Sheet 84W (Scotland). 
Merrit, J W, Auton, C A, and Firth. C R. 1995. Ice-proximal glaciomarine sedimentation and sea-level change in the Inverness area, Scotland: A review of the deglaciation of a major ice stream of the British Late Devensian ice sheet. Quaternary Science Reviews, Vol.14, 289-329. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: