The BGS Lexicon of Named Rock Units — Result Details
Dollis Hill Gravel Member
| Computer Code: | DHGR | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Cromerian Stage (QC) — Anglian Stage (QA) | ||
| Lithological Description: | Gravel, sandy and clayey in part, with some laminated silty beds.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 by Anglian Till in many places; otherwise at surface. | ||
| Thickness: | 1-15m. | ||
| Geographical Limits: | Tributary of ancestral River Thames in the Finchley - Hoddesdon area of North London. | ||
| Parent Unit: | Sudbury Formation (SBRY) | ||
| Previous Name(s): | Glacial Sand and Gravel
(GSG)
Dollis Hill Gravel Formation (-3359) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Temporary exposure on Dollis Hill near Hendon. | ||
| Reference(s): | |||
| Gibbard, P L. 1979. Middle Pleistocene drainage in the Thames Valley. Geological Magazine, Vol.116, 35-44. | |||
| 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 | |||