The BGS Lexicon of Named Rock Units — Result Details

Hillmorton Sand Member

Computer Code: HISA Preferred Map Code: notEntered
Status Code: Full
Age range: Anglian Stage (QA) — Anglian Stage (QA)
Lithological Description: Glaciofluvial sand with some gravel lenses, which in-fills a bedrock channel (probably a modified pre-glacial valley) east of Rugby.
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: At the type locality it is overlain by the Dunsmore Gravel Member (DMG) but southeastwards passes below the Oadby Till Member (ODT).
Thickness: Up to 50 m thick.
Geographical Limits: East of Rugby.
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  Hillmorton Pit [SP 542 737]. 
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). 
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