| Computer Code: |
YM |
Preferred Map Code: |
notEntered |
| Status Code: |
Pending Upgrade |
| Age range: |
Marine Isotope Stage 62 (QMIS062)
— Marine Isotope Stage 13 (QMIS013) |
| Lithological Description: |
Fine or medium-grained grey-green sands, typically non-calcareous, with variable clay lamination and local intercalations of reworked peat. Characteristic chaotic reflector configuration in seismic profiles, presumed mainly fluviatile, with possible shallow marine incursions. |
| Definition of Lower Boundary: |
Unconformably overlies early Pleistocene Westkapelle Ground, Smith's knoll, Ijmuiden Ground or Winterton Shoal Formations. |
| Definition of Upper Boundary: |
Unconformably overlain by Middle and Upper Pleistocene formations, and subcrops below Holocene sands in parts of British Sector. |
| Thickness: |
0 - 100 metres. |
| Geographical Limits: |
Not defined. |
| Parent Unit: |
Dunwich Group (DUNW)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Stoker, M S, Balson, P S, Long, D, and Tappin, D R. 2011. An overview of the lithostratigraphical framework for the Quaternary deposits on the United Kingdom continental shelf. British Geological Survey Research Report, RR/11/03. 48pp. |
| Cameron, T D J, Crosby, A, Balson, P S, Jeffery, D H, Lott, G K, Bulat, J, and Harrison, D J. 1992. United Kingdom offshore regional report: the geology of the southern North Sea. (London: HMSO for the British Geological Survey.) |
| Cameron, T D J, and Holmes, R. 1999. The Continental Shelf. 125-139 in A revised correlation of Quaternary deposits in the British Isles. Bowen, D Q (editor). Special Report of the Geological Society of London, No. 23. |
| Cameron, T D J, Laban, C, and Schuttenhelm, R T E. 1984. Solid Geology, Quaternary Geology and Sea-Bed Sediments of the United Kingdom and Continental Shelf. British Geological Survey, 1:250 000 series, 52N-02E Quaternary: Flemish Bight, Quaternary Geology, MR/85/38. (Southampton: Ordnance Survey for the British Geological Survey.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
