The BGS Lexicon of Named Rock Units — Result Details

Shepperton Gravel Member

Computer Code: SHGR Preferred Map Code: symb
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Gravel with clay and sand.
Definition of Lower Boundary: Erosional surface cut into Tertiary-Cretaceous bedrock.
Definition of Upper Boundary: Lies beneath Thames floodplain alluvium (Staines Alluvial Deposits).
Thickness: 0-8m, locally 12-14m
Geographical Limits: Thames Valley, Abingdon-London.
Parent Unit: Maidenhead Formation (MNHD)
Previous Name(s): Shepperton Gravel (-522)
Valley Gravel (VLGR)
Alternative Name(s): Colne Valley Deposits
Stratotypes:
Type Section  Shepperton Quarry. 
Reference(s):
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:
E268 E269