The BGS Lexicon of Named Rock Units — Result Details

Woodford Gravel Formation

Computer Code: WOGR Preferred Map Code: notEntered
Status Code: Full
Age range: Cromerian Stage (QC) — Anglian Stage (QA)
Lithological Description: Sand and gravel, locally with lenses of silt, clay or peat and organic material. [Generic description].
Definition of Lower Boundary: Rests unconformably on bedrock geology.
Definition of Upper Boundary: Overlain in part by Anglian till, otherwise at surface.
Thickness: 1-10m, average 5m
Geographical Limits: Tributary of pre-diversionary (ancestral) River Thames, Woodford - Epping area.
Parent Unit: Not Entered (?)
Previous Name(s): Glacial Sand And Gravel (GSG)
Alternative Name(s): none recorded or not applicable
Type Area  North Circular Road, Woodford, series of boreholes. 
Strange, P J, 1992. A new nomenclature for the River Terrace Deposits of North London. British Geological Survey Technical Report, WA/92/52. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E256 E257