| Computer Code: |
WOC |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Anglian Stage (QA)
— Anglian Stage (QA) |
| Lithological Description: |
Bedded, in some cases laminated, lacustrine clay and silt. It contains local lenses of sand, including the widespread Knightlow Sand Member, which divides it into lower and upper leaves. Particularly in its upper part, it contains sporadic drop-stones, mainly of chalk and flint, and bodies of till. |
| Definition of Lower Boundary: |
In the type area, overlies the Thrussington Till Member (THT). |
| Definition of Upper Boundary: |
In the type area, is overlain by the Dunsmore Gravel Member (DMG). |
| Thickness: |
It is generally 10-20 m thick, though it probably exceeds 30 m in the Brinklow area [SP 43 79]. |
| Geographical Limits: |
It is well-developed in the Rugby, Coventry and Leamington area, with outliers occurring further south (e.g. Snitterfield, Stretton-on-Fosse [SP 22 38]). North of Stretton under Fosse [SP 45 81], the lower leaf passes into the lithologically similar Bosworth Clay Member, and the upper leaf is replaced by the Oadby Till Member. |
| Parent Unit: |
Wolston Glacigenic Formation (WOLS)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Wolston Pit [SP 410 746]. |
| Reference(s): |
| 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. |
| Bowen, D Q. 1999. A revised correlation of Quaternary deposits in the British Isles. Geological Society Special Report, No. 23. |
| Old, R A, Sumbler, M G and Ambrose, K, 1987. Geology of the country around Warwick. Memoir of the British Geological Survey, Sheet 184 (England and Wales). |
| Shotton, F W. 1953. The Pleistocene deposits of the area between Coventry, Rugby and Leamington and their bearing on the topographic development of the Midlands. Philosophical Transactions of the Royal Society of London, Vol.B237, 209-260. |
| Sumbler, M G. 1983. A new look at the type Wolstonian glacial deposits of Central England. Proceedings of the Geologists' Association, Vol. 94, 23 - 31. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
