| Computer Code: |
HLOGR |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Quaternary Period (Q)
— Quaternary Period (Q) |
| Lithological Description: |
Sand and gravel of predominantly flint and chalk with quartz and quartzite and traces of far travelled lithologies including Rhaxella chert. |
| Definition of Lower Boundary: |
Unconformable boundary, locally channelised, with High Lodge Silt Member |
| Definition of Upper Boundary: |
Unconformably overlain by debris flow deposits (Mildenhall Upper Diamicton of Cook et al. p. 59-69 in Lewis et al. 1991) |
| Thickness: |
c.8 m (Cook et al. p.59-69 in Lewis et al.1991) |
| Geographical Limits: |
Restricted to palaeovalley of the River Bytham, in the Mildenhall area of Suffolk. Not depicted on BGS maps |
| Parent Unit: |
Lowestoft Formation (LOFT)
|
| Previous Name(s): |
Mildenhall Upper Sands and Gravels [Obsolete Name and Code: Use HLOGR]
(-4095)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Temporary excavations about 300m west of High Lodge Farm Ashton et al,1992 |
| Reference(s): |
| Ashton, N M. 1999. A revised correlation of Quaternary deposits in the British Isles. Bowen, D Q (editor). London: The Geological Society. High Lodge Member. p.19. |
| Ashton, N M. 1992. The High Lodge flint industries. 120-123 in High Lodge: Excavations by G de G Sieveking, 1962-68, and J Cook, 1988. Ashton, N M, Cook, J, Lewis, S G, and Rose, J (editors). (London: British Museum Press.) |
| Cook, J, Ashton, N, Cooper, G R, Hunt, C O, Lewis, S G, and Rose, J. 1991. High Lodge, Mildenhall, Suffolk (TL 739 754). 59-69 in Central East Anglia and the Fen Basin: Field Guide. Lewis, S G , Whiteman, C A, and Bridgland, D R (editors). (London: Quaternary Research Association.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
