| Computer Code: |
WAHG |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Wolstonian Stage (QO)
— Wolstonian Stage (QO) |
| Lithological Description: |
Dark grey, very compact, pebbly sandy clay diamicton containing Scandinavian erratics to the exclusion of rocks from the British mainland excepting local limestone and dolostone of the Zechstein Group (formerly Magnesian Limestone). More than 80% of the erratics have been matched with igneous and metamorphic rocks occurring in the Oslo area pf southern Norway, including larvikite and nordmarkite. Chalk, flint, red sandstone, red and green (Triassic) marl and belemnite fragments constitute about 6% of the erratics, and, together with numerous marine shell fragments, have been derived from the North Sea Basin. |
| Definition of Lower Boundary: |
Unconformable, undulating erosional contact on limestone and dolostone of the Zechstein Group (formerly Magnesian Limestone) within the floor of a buried valley at the mouth of Warren House Gill. Locally overlies limestone rubble-filled fissures in the "Magnesian Limestone". |
| Definition of Upper Boundary: |
Sharp, conformable, draped contact with overlying pale brown, fine-grained sand and silt of the Warren House Gill Loess Bed. |
| Thickness: |
5m |
| Geographical Limits: |
Coast of County Durham. |
| Parent Unit: |
North Sea Coast (Albion) Glacigenic Subgroup (NSCA)
|
| Previous Name(s): |
Scandinavian Drift [Obsolete Name and Code: Use WAHG]
(-3751)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
Crops out at the foot of cliffs adjacent to the coastal dene of Warren House Gill, north of Horden, County Durham. Smith and Francis, 1967. |
| Reference(s): |
| Smith, D B and Francis, E A. 1967. Geology of the country between Durham and West Hartlepool. Memoir of the Geological Survey of Great Britain, Sheet 27 (England and Wales). |
| Bridgland, D R, Horton, B P, and Innes, J B. 1999. The Quaternary of northeast England. Field Guide. Quaternary Research Assocation, London. |
| Thomas, G S P. 1999. Northern England. 91-98 in Bowen, D Q (Editor), A revised correlation of Quaternary and Neogene deposits in the British Isles. Geological Society Special Report No.23. |
| Huddart, D. 2002. Skippersea Bay. In Huddart, D and Glasser, N F (editors), Quaternary of Northern England. Geological Conservation Review Series, No.25. [Peterborough: Joint Nature Conservation Committee.] 745pp. |
| Francis, E A. 1970. Quaternary. 134-152 in Johnson, G A L, Geology of Durham County. [Newcastle: Natural History Society of Northumberland, Durham and Newcastle-upon-Tyne.] 152pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E027
|
