The BGS Lexicon of Named Rock Units — Result Details

Bain Valley Formation
Computer Code: BAINV Preferred Map Code: notEntered
Status Code: Full
Age range: Anglian Age (QA) — Holocene Epoch (QH)
Lithological Description: Fluvial terrace deposits of the River Bain. Mainly sand, gravel and mud; divided (in type area) into two principal "terrace" members (Thorpe and Castle) plus alluvium (Bain Member of Bowen, 1999), and an older (late Anglian) terrace (Martin/Tattershall Airfield of Bowen, 1999), plus local named organic deposits. Includes contemporaneous head, colluvium and soil deposits. Gravel dominated by flint and chalk pebbles, and other Jurassic/Cretaceous material derived mainly from glacial deposits of the Anglian Lowestoft Formation, plus an additional component of Upper Jurassic and Cretaceous material from the bedrock of the catchment.
Definition of Lower Boundary: Unconformable, commonly channelled base on Anglian glacial deposits or on pre-Quaternary bedrock.
Definition of Upper Boundary: Ground surface.
Thickness: 0 to c. 8m
Geographical Limits: Bain catchment, from headwaters near Doninton on Bain [TF 23 83] to confluence with River Witham near Tattershall [TF 21 59].
Parent Unit: Trent-Witham Catchments Subgroup (TRWCA)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Lower Bain valley, Kirkby on Bain [TF 24 63] to Tattershall [TF 21 59], Lincolnshire. Bowen, 1999 (Brandon and Sumbler, unpublished MS). 
Reference(s):
Brandon, A and Sumbler, M G. Unpublished data. 
Bowen, D Q (Editor). 1999. A revised correlation of Quaternary deposits in the British Isles. Geological Society of London Special Report, No.23. 
Holyoak, D T and Preece, R C. 1985. Late Pleistocene interglacial deposits at Tattershall, Lincolnshire. Philosophical Transactions of the Royal Society of London, Vol. B311, 193-236. 
Straw, A. 1958. The glacial sequence in Lincolnshire. East Midlands Geographer, Vol.2, 29-40. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E103 E115
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