The BGS Lexicon of Named Rock Units — Result Details

Maudsyke Till Member

Computer Code: MSYT Preferred Map Code: MSY
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Extremely dense, moderate to pale reddish brown (Munsell Soil) cobbly sandy clay diamicton, mainly matrix-supported, with clasts predominantly of Borrowdale Volcanic Group lithologies (rhyolite, welded tuff, slate).
Definition of Lower Boundary: Generally a sharp, undulating to uneven, unconformable contact with bedrock, but locally a sharp, probably planar contact with extremely stiff, reddish brown, gravelly sandy clay diamicton of the Drigg Till Formation.
Definition of Upper Boundary: Sharp, draped, unconformable contact with overlying thinly laminated (varved) silt and clay of the Stubble Green Silt Member of the Carleton Silt Formation.
Thickness: To 10m
Geographical Limits: At depth in Lower Wasdale, western Lake District, Cumbria.
Parent Unit: Blengdale Glacigenic Formation (BLGL)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  BNFL "off-site" borehole C, from 50.3 to 60.2m 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. 
Trotter, F M, Hollingworth, S E, Eastwood T and Rose, W C C. 1937. Gosforth District. Geological Survey Memoir, England and Wales, Sheet 37. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable