The BGS Lexicon of Named Rock Units — Result Details

Banffshire Coast and Caithness Glacigenic Subgroup

Computer Code: BCD Preferred Map Code: BC
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Suite of reddish to dark blue-grey clayey diamictons containing clasts and rafts of Mesozoic rocks derived from the bed of the Moray Firth, also pre-Late Devensian glaciomarine shelly muds.
Definition of Lower Boundary: Unconformable on bedrock or units of the Banffshire Coast and Caithness (Albion) Glacigenic Subgroup.
Definition of Upper Boundary: Extends to the surface or buried by late glacial to postglacial deposits.
Thickness: 30 m or more.
Geographical Limits: Southern coast of Moray Firth from Elgin to Peterhead, Caithness and Orkney.
Parent Unit: Caledonia Glacigenic Group (CALI)
Previous Name(s): Lower Or South Easterly Drift (-43)
Banffshire Coast Drift Group (-3193)
Blue-Grey Series (-673)
Banffshire Coast Glacigenic Group (-1971)
Coastal Deposits And Glaciofluvial Deposits (-4445)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Southern coast of Moray Firth from Elgin to Peterhead, Caithness and Orkney. See type sections of constituent formations. 
Reference(s):
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). 
Synge, F M. 1956. The glaciation of north east Scotland. Scottish Geographical Magazine, Vol.72, 129-143. 
McMillan, A A, Hamblin, R J O, and Merritt, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03. 343pp. 
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) 
British Geological Survey, 1992. 1:50 000 Geological Map of Scotland: Sheet 87E (Peterhead). (This map has a summary of the geology). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S087 S096 S096 S087 S097