| Computer Code: |
WGGR |
Preferred Map Code: |
symb |
| Status Code: |
Full |
| Age range: |
Early Pleistocene (QPE)
— Mid Pleistocene (QPM) |
| Lithological Description: |
1-5 m of variably sandy and clayey gravel. |
| Definition of Lower Boundary: |
Erosional base on Palaeogene-Neogene (Tertiary) to Cretaceous bedrock. |
| Definition of Upper Boundary: |
Terrace form. |
| Thickness: |
1-5 m. |
| Geographical Limits: |
Thames Valley and southern East Anglia. |
| Parent Unit: |
Sudbury Formation (SBRY)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Thames Valley: Goring and southern East Anglia. |
| Reference(s): |
| Hey, R W, 1966. Highly quartzose pebble gravels in the London Basin. Proceedings of the Geologists' Association, Vol.76, 403-420. |
| Whiteman, C A and Rose, J. 1992. Thames river sediments of the British Early and Middle Pleistocene. Quarterly Science Reviews, Vol.11, 363-375. |
| Whiteman, C A. 1992. The palaeogeography and correlation of pre-Anglian-Glaciation terraces of the River Thames in Essex and the London Basin. Proceedings of the Geologists' Association, Vol.103, 37-56. |
| Gibbard, P L. 1985. Pleistocene history of the Middle Thames Valley. (London: Cambridge University Press.) |
| McMillan, A A, Hamblin, R J O, and Merritt, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03. 343pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E268
|
