| Computer Code: |
MOPT |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Devensian Stage (QD)
— Devensian Stage (QD) |
| Lithological Description: |
Peat, highly compressed containing pollen and macroscopic plant remains dominated by willow. The peat bed is tentitively assigned to an early Devensian interstadial. |
| Definition of Lower Boundary: |
Sharp, uneven, unconformable contact with underlying extremely compact, silty sandy gravelly diamicton of the Thornsgill Till Formation containing clasts mainly of slate, "Borrowdale Volcanic Group" lithologies and Threlkeld microgranite. |
| Definition of Upper Boundary: |
Disturbed, locally gradational contact with remobilized till similar to that occurring below (landslip or head deposit), or a sharp, erosional, unconformable contact with overlying gravel forming a river terrace. |
| Thickness: |
To 1m |
| Geographical Limits: |
Keswick-Thelkeld area of the northern Lake District. |
| Parent Unit: |
Troutbeck Palaeosol (TBPS)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
River cliff section 1.2km upstream (south) of High Hollows in the valley of Mosedale Beck, near Keswick. Boardman, 1994. |
| Reference(s): |
| Boardman, J. 1991. Glacial deposits in the English Lake District. 231-260 in Glacial deposits in Great Britain and Ireland. Ehlers, J, Gibbard, P L, and Rose, J (editors). (Rotterdam:Balkema.) |
| Boardman, J. 1994. Mosedale. 165-172 in The Quaternary of Cumbria: Field Guide. Boardman J, and Walden, J (editors). (Quaternary Research Association, Oxford.) |
| Boardman, J. 2002. Thornsgill and Mosedale, 46-51 in Quaternary of Northern England. Geological Conservation Review Series, No.25. Huddart, D, and Glasser, N F (editors). (Peterborough: Joint Nature Conservation Committee.) 745pp. |
| Boardman, J, Lowe, J J, Holyoak, D T, and Wilson, P. 1981. Northeastern Lake District: The valleys of Mosedale and Thornsgill. 7-39 in Field Guide to Eastern Cumbria. J Boardman (editor). Quaternary Research Association, London, 128pp. |
| McMillan, A A, Hamblin, R J O, and Merritt, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03. 343pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
