The BGS Lexicon of Named Rock Units — Result Details

Great Britain Superficial Deposits Supergroup

Computer Code: GBG Preferred Map Code: GBG
Status Code: Full
Age range: Neogene Period (N) — Quaternary Period (Q)
Lithological Description: The Great Britain Superficial Deposits Supergroup embraces all natural superficial deposits cropping out in England, Scotland and Wales, and the Isle of Man. Deposits comprise diamicton [including till], sand, gravel, silt and clay.
Definition of Lower Boundary: Generally sharp but locally gradational unconformable contact with bedrock of Neogene age and older.
Definition of Upper Boundary: The ground surface.
Thickness: To 200m in onshore Britain
Geographical Limits: The whole of Great Britain [England, Scotland and Wales], including the Isle of Man, the Scilly Isles and Scottish islands, together with adjacent offshore areas.
Parent Unit: Not Applicable (-)
Previous Name(s): Drift Deposits (-3416)
Great Britain Glacigenic Supergroup (-1554)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  The whole of Great Britain [England, Scotland and Wales], including Isle of Man, the Scilly Isles and Scottish islands together with adjacent offshore area. See also the stratotypes of constituent groups, subgroups and formations for natural superficial deposits and BGS Rock Classification Scheme report RR/99/04 [McMillan and Powell, 1999]. 
Reference(s):
Ehlers, J, Gibbard, P L and Rose, J [editors]. 1991. Glacial deposits in Great Britain and Ireland. Balkema: Rotterdam, 580pp. 
Boulton, G S. 1992. Quaternary. 413-444 in Duff, P M D and Smith, A J (eds) Geology of England and Wales. [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, Peacock, J D and Sutherland, D G. 2002. Quaternary. 409-430 in Trewin, N H [editor], Geology of Scotland. [4th edition]. [London: The Geological Society.] 
McMillan, A A and Powell, J H. 1999. The classification of artificial [man made] ground and natural superficial deposits. British Geological Survey Research Report, RR/99/04. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable