The BGS Lexicon of Named Rock Units — Result Details
Shepperton Gravel Member
Computer Code: | SHGR | Preferred Map Code: | symb |
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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) Valley Gravel (VLGR) |
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Alternative Name(s): | Colne Valley Deposits |
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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 |