The BGS Lexicon of Named Rock Units — Result Details

Albion Glacigenic Group

Computer Code: ALBI Preferred Map Code: ALB
Status Code: Full
Age range: Cromerian Stage (QC) — Wolstonian Stage (QO)
Lithological Description: Tills (diamictons), sands, gravels, silts and clays. Sands and gravels contain clasts derived from rocks cropping out throughout northern, central and eastern England, Scotland and Wales, and offshore. A suite of glacial, glaciofluvial, glaciolacustrine and glaciomarine deposits. Cromerian - pre-Ipswichian (MIS 16 - 6).
Definition of Lower Boundary: Sharp, planar unconformable contact with units of the Dunwich and/or Crag groups, or bedrock.
Definition of Upper Boundary: Ground surface or unconformable contact with units of the Caledonia Glacigenic Group, the Britannia Catchments Group or the British Coastal Deposits Group.
Thickness: Up to 120 m.
Geographical Limits: The whole of Great Britain lying to the north of the Anglian glacial limit crossing southern England, but mainly occuring between the Anglian and Devension glacial limits.
Parent Unit: Great Britain Superficial Deposits Supergroup (GBG)
Previous Name(s): South Britain Glacigenic Group [Obsolete Name And Code: See ALBI And CALI] (SBRG)
Older Drift [Obsolete Name and Code: Use ALBI] (*792)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  The deposits occur mainly between the glacial limits of the Devensian and Anglian ice-sheets. Isolated remnants are present to north of the Devensian glacial limit. See the stratotypes of the constituent formations. 
Reference(s):
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. 
McMillan, A A, Hamblin, R J O, and Merritt, J W. 2005. An overview of the lithostratigraphical framework for the Quarternary and Neogene deposits of Great Britain (onshore). British Geological Survey Research Report RR/04/04. 
Ehlers, J, Gibbard, P L, and Rose, J (editors). 1991. Glacial deposits in Great Britain and Ireland. (Rotterdam: Balkema.) 580 pp. 
Boulton, G S, Peacock, J D, and Sutherland, D G. 2002. Quaternary. 409-430 in Geology of Scotland (4th edition). Trewin, N H (editor). (London: The Geological Society.) 
Bowen, D Q. 1999. A revised correlation of Quaternary deposits in the British Isles. Geological Society Special Report, No. 23. 
Boulton, G S. 1992. Quaternary. 413-444 in Geology of England and Wales. Duff, P M D, and Smith, A J (editors). (London: The Geological Society.) 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable