The BGS Lexicon of Named Rock Units — Result Details

Kirk Burn Silt Formation

Computer Code: KBSI Preferred Map Code: KBS
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Interbedded silt, clay and fine-grained sand, yellowish brown to dark grey. Local ferruginous nodules. Glaciolacustrine. Very locally interbedded with, or overlain by, thin diamicton (Carnhash Till Member).
Definition of Lower Boundary: Lies on bedrock (Middle Old Red Sandstone) or older Quaternary deposits (Crovie Till Formation or Whitehills Glacigenic Formation).
Definition of Upper Boundary: Surface, or overlain by younger deposits of Holocene/Flandrian age (peat, alluvium, etc).
Thickness: 30m
Geographical Limits: Portknockie to New Aberdour.
Parent Unit: Banffshire Coast and Caithness Glacigenic Subgroup (BCD)
Previous Name(s): Coastal Deposits Of Banffshire (-338)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Castle Hill, Gardenstown. 
Reference(s):
Merritt, J W, Auton, C A, Connell, E R, Hall, A M and Peacock, J D. 2003. The Cainozoic geology and landscape evolution of north-east Scotland. Memoir of the British Geological Survey, Sheets 66E, 67, 76E, 77, 86E, 87W, 87E, 95, 96W, 96E and 97 (Scotland) 
Peacock, J D and Merritt, J W. 1997. Glaciotectonic rafting at Castle Hill, Gardenstown and its significance for the glacial history of northern Banffshire, Scotland. Journal of Quaternary Science. Vol.12 283-294. 
Read, H H, 1923. Geology of the country around Banff, Huntly and Turriff, Lower Banffshire and north-west Aberdeenshire. Memoir of the Geological Survey, Scotland Sheets 86 and 96 (Scotland). 
Peacock, J D, 1971. A re-interpretation of the Coastal Deposits of Banffshire and their place in the Late-Glacial history of north-east Scotland. Bulletin of the Geological Survey of Great Britain, No.37, 81-89. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S096 S096 S097