The BGS Lexicon of Named Rock Units — Result Details

North Sea Coast (Albion) Glacigenic Subgroup

Computer Code: NSCA Preferred Map Code: NSCA
Status Code: Full
Age range: Cromerian Stage (QC) — Wolstonian Stage (QO)
Lithological Description: Suite of glacial, glaciofluvial, glaciolacustrine and possibly glaciomarine deposits that contain clasts predominantly from northeast England (yellow, grey and white sandstones, mudstone, limestone, coal, dolerite), southern Scotland (greywacke sandstone and mudstone, granite, andesite, red sandstone) and offshore (marl, gypsum, chalk and sparse Scandinavian erratics). Including clayey diamictons (till), sand, gravel, silt and clay. Deposited by ice sourced mainly in the Scottish Borders and central Scotland that flowed southeastwards along the eastern coast of England (but mainly offshore) as far as north Norfolk.
Definition of Lower Boundary: Sharp, unconformable contact with bedrock.
Definition of Upper Boundary: Unconformable, mainly planar contact with units of the North Sea Coast Glacigenic Subgroup. Possible lateral interdigitation with units of the North Pennine (Albion) Glacigenic Subgroup.
Thickness: To 10m
Geographical Limits: The North Sea coast and coastal plains of northeastern and eastern England between Berwick-upon-Tweed and north Norfolk.
Parent Unit: Albion Glacigenic Group (ALBI)
Previous Name(s): North Sea Drift (-1095)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  The North Sea coast and coastal plains of north-eastern and eastern England. Ehlers et al, 1991. See also the stratotypes of constituent formations. 
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.] 
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. 
Bowen, D Q. 1999. A revised correlation of Quaternary deposits in the British Isles. Geological Society Special Report, No. 23. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable