Computer Code: |
BAINV |
Preferred Map Code: |
notEntered |
Status Code: |
Full |
Age range: |
Anglian Stage (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 Bowen, 1999 (Brandon and Sumbler, unpublished MS).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): |
Bowen, D Q. 1999. A revised correlation of Quaternary deposits in the British Isles. Geological Society Special Report, No. 23. |
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. |
Brandon, A and Sumbler M G. Unpublished manuscript. |
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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