Computer Code: |
SWT |
Preferred Map Code: |
notEntered |
Status Code: |
Pending Upgrade |
Age range: |
Marine Isotope Stage 3 (QMIS003)
— Marine Isotope Stage 2 (QMIS002) |
Lithological Description: |
Muddy sands with sporadic gravel or mud layers. |
Definition of Lower Boundary: |
Base : smooth reflector often uncertain. |
Definition of Upper Boundary: |
Upper: seabed or ice scoured surface beneath Witch Ground Formation. |
Thickness: |
35 metres - 0. |
Geographical Limits: |
Not defined. |
Parent Unit: |
Reaper Glacigenic Group (REAP)
|
Previous Name(s): |
Swatchway Beds
(-5061)
|
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. |
Stoker, M S, Long, D, and Fyfe, J A. 1985. A revised Quaternary stratigraphy for the central North Sea. Report of the British Geological Survey, Vol. 17, No. 2. |
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. |
Holmes, R. 1977. Quaternary deposits of the central North Sea 5. The Quaternary geology of the UK sector of the North Sea between 56° and 58° N. Report of the Institute of Geological Sciences, No. 77/14. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |