The BGS Lexicon of Named Rock Units — Result Details

Dunsmore Gravel

Computer Code: DMG Preferred Map Code: D
Status Code: Index Level
Age range: Anglian Stage (QA) — Anglian Stage (QA)
Lithological Description: Red, brown and yellow, commonly ochreous, matrix-supported flinty gravel with lenses of coarse sand. Most deposits are poorly sorted and clay-rich.Sand and gravel, clayey brown and yellow; Late Glacial to Postglacial. [Generic description: 1:50 k map margins].
Definition of Lower Boundary: Sharp, irregular and erosional upon various Anglian age Quaternary deposits that include the Oadby Till.
Definition of Upper Boundary: Generally the present-day land surface. The deposit may locally be covered by recent deposits such as head or alluvium. The Dunsmore Gravel is thought to grade laterally into the 'Fifth Terrace' of the river Avon.
Thickness: Variable, generally from 1 - 3m but up to 7.8m proven where channelised.
Geographical Limits: Patches of Dunsmore Gravel extend from just south of Leamington Hastings (SK 45 67), northwards to around Bagworth (SK 423 053).
Parent Unit: Not Applicable (-)
Previous Name(s): none recorded or not applicable
Alternative Name(s): Flinty Gravel
Stratotypes:
Type Area  On the superficial deposit-covered plateau between Frankton and Clifton upon Dunsmore, Warwickshire. 
Reference(s):
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. 
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). 
Bridge, D McC, Carney, J N, Lawley, R S and Rushton, A W A. 1998. Geology of the country around Coventry and Nuneaton. Memoir of the British Geological Survey, Sheet 169 (England and Wales). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E184 E169