Computer Code: |
BSSS |
Preferred Map Code: |
BSS |
Status Code: |
Full |
Age range: |
Devensian Stage (QD)
— Devensian Stage (QD) |
Lithological Description: |
Thin interbedded and laminated reddish brown and yellowish brown fine- to medium-grained sand, silt and clay with sparse gravel. Disseminated coal fragments present throughout. |
Definition of Lower Boundary: |
Sharp, undulating, draped, unconformable contact with reddish brown stony clay diamicton of the Holmrook Till Member of the Blengdale Glacigenic Formation. |
Definition of Upper Boundary: |
Sharp, planar, unconformable contact with reddish brown gravelly sandy clay diamicton of the Ravenglass Till Member of the Seascale Glacigenic Formation. |
Thickness: |
To 27m |
Geographical Limits: |
Identified only in the vicinity of the Drigg Landfill Site, Holmrook, Cumbria, but probably extends off-shore filling a buried channel. |
Parent Unit: |
Seascale Glacigenic Formation (SEAG)
|
Previous Name(s): |
none recorded or not applicable
|
Alternative Name(s): |
none recorded or not applicable
|
Stratotypes: |
Type Section |
BNFL Drigg Off-site Borehole C, from 18.6 to 45.8m depth. Nirex, 1997. |
Reference(s): |
Merrit, J W and Auton, C A. 2000. An outline of the lithostratigraphy and depositional history of Quaternary deposits in the Sellafield district, west Cumbria. Proceedings of the Yorkshire Geological Society, Vol.53, 129-154 |
Merritt, J W and Auton, C A. 1997. Quaternary lithostratigraphy of the Sellafield district. Nirex Science Report SA/97/045 (Issue 2.0). [Report prepared for UK Nirex Ltd. 69pp, 5 tables, 20 figures, 14 enclosures and one appendix.] |
Akhurst, M C, Chadwick, R A, Holliday, D W, McCormac, M, McMillan, A A, Millward, D, Young, B, Ambrose, K, Auton, C A, Barclay, W J, Barnes, R P, Beddoe-Stephens, B, James, J C W, Johnson, H, Jones, N S, Glover, B W, Hawkins, M P, Kimbell, G S, MacPherson, K A T, Merritt, J W, Milodowski, A E, Riley, N J, Robins, N S, Stone, P, and Wingfield, R T R. 1997. The geology of the west Cumbria district. Memoir of the British Geological Survey, Sheets 28, 37 and 47 (England and Wales). 138pp. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
none recorded or not applicable |