The BGS Lexicon of Named Rock Units — Result Details

Oadby Till Member

Computer Code: ODT Preferred Map Code: symb
Status Code: Full
Age range: Anglian Stage (QA) — Anglian Stage (QA)
Lithological Description: Diamicton, grey, weathering brown, characterised by Cretaceous and Jurassic rock fragments; subordinate lenses of sand and gravel, clay and silt. Clay, brown to grey, and silty clay, with chalk and flint fragments - [Generic description: 'TMOS' Procedures].
Definition of Lower Boundary: Typically the bedrock surface below the deposit; other deposits may, however, intervene.
Definition of Upper Boundary: Typically the present-day surface; can, however, be overlain by later river terrace deposits or glacigenic deposits, or head.
Thickness: Variable up to 20 m; typically 1-7 m.
Geographical Limits: East Midlands.
Parent Unit: Wolston Glacigenic Formation (WOLS)
Previous Name(s): Oadby Till [Obsolete Name and Code: Use ODT] (-1738)
Chalky Boulder Clay [Obsolete Name and Code: Use ODT] (-4821)
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Rice, R J, 1968. The Quaternary deposits of central Leicestershire. Philosophical Transactions of the Royal Society of London, Series A, Vol.262, 459-509. 
Clayton, K M. 1953. The glacial chronology of part of the middle Trent basin. Proceedings of the Geologists' Association, Vol. 64. 198-207. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E184 E169 E142 E217 E125 E126 E140 E141 E155 E170 E200 E218