| Computer Code: |
MRN |
Preferred Map Code: |
notEntered |
| Status Code: |
Pending Upgrade |
| Age range: |
Marine Isotope Stage 12 (QMIS012)
— Marine Isotope Stage 6 (QMIS006) |
| Lithological Description: |
A sequence of sandy, silty clays with sand and clay layers interspersed. Pebbly and shelly sequences within the strata. Base of unit is largely silty sand, well sorted but with clayey partings. Unit below is sandy, as is the base of the Mariner Formation - faunal changes indicate boundary is in off-lapping sequence. Upper boundary is also sandy with a very marked erosion surface. |
| Definition of Lower Boundary: |
Lower boundary is an off-lapping/disconformable boundary with the underlying Shackleton Formation. |
| Definition of Upper Boundary: |
Upper boundary is a marked erosion surface underlying the Ferder Formation. |
| Thickness: |
110 metres at Borehole 78/9. Thins to the south and southwest. Thickens to the north. May be largely eroded away in the southern parts of the Norwegian Trench. |
| Geographical Limits: |
Not defined. |
| Parent Unit: |
Hjaltland Glacigenic Group (HJG)
|
| 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. |
| Johnson, H, Richards, P C, Long, D, and Graham, C C. 1993. United Kingdom offshore regional report: the geology of the northern North Sea. (London: HMSO for the British Geological Survey.) |
| Stoker, M S, Hitchen, K, and Graham, C C. 1993. United Kingdom offshore regional report: the geology of the Hebrides and West Shetland shelves and adjacent deep-water areas. (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. |
| Rise, L, Rokoengen, K, Skinner, A C, and Long, D. 1984. Nordlige Nordsjø. Kvartaergeologisk kart mellom 60°30’ og 62°N, og øst for 1°Ø (Northern North Sea. Quaternary geology map between 60°30’ and 62°N, and east of 1°E) M 1:500 000. Institutt for kontinentalsokkelundersøkelser (IKU), Norway. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
