| 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 [Obsolete Name and Code: Use LHGR]
(-4760)
|
| Alternative Name(s): |
Denham Valley Terrace Deposits
|
| 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
|
