The BGS Lexicon of Named Rock Units — Result Details

Lynch Hill Gravel Member

Computer Code: LHGR Preferred Map Code: notEntered
Status Code: Full
Age range: Wolstonian Stage (QO) — Wolstonian Stage (QO)
Lithological Description: Sand and gravel, locally with lenses of silt, clay or peat. [Generic description].
Definition of Lower Boundary: Rests unconformably on bedrock geology.
Definition of Upper Boundary: At surface.
Thickness: Average 7m, range 1-12m.
Geographical Limits: Thames Valley and associated tributaries.
Parent Unit: Maidenhead Formation (MNHD)
Previous Name(s): Lynch Hill Gravel Formation (-4760)
Alternative Name(s): Denham Valley Terrace
Stratotypes:
Type Section  Lynch Hill, Slough. 
Reference(s):
Hare, F K, 1947. The geomorphology of a part of the Middle Thames. Proceedings of the Geologists' Association, Vol.58, 294-339. 
Strange, P J, 1992. A new nomenclature for the River Terrace Deposits of North London. British Geological Survey Technical Report, WA/92/52. 
Gibbard, P L, 1985. Pleistocene history of the Middle Thames Valley. (London: Cambridge University Press.) 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E254 E256 E257 E268 E269 E285