The BGS Lexicon of Named Rock Units — Result Details

Manx Glacigenic Subgroup

Computer Code: MXGL Preferred Map Code: notEntered
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Head, scree and slope wash deposits, covering upland areas (Snaefell Formation). These include boulder scree, and some "redeposited" gravels and diamictons.
Definition of Lower Boundary: Unconformable on bedrock.
Definition of Upper Boundary: The ground surface or overlain by Holocene sediments.
Thickness: Unrecorded.
Geographical Limits: Mainly the central uplands of the Isle of Man, but also present on low ground around the coast. (50k sheets,36, 45, 46, 56, 57).
Parent Unit: Caledonia Glacigenic Group (CALI)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  The valley of Druidale, 3.5km west of Snaefell, Isle of Man. Chadwick, R A et al. (2001). 
Reference(s):
Chadwick, R A, Jackson, D I, Barnes, R P, Kimbell, G S, Johnson, H, Chiverell, R C, Thomas, G S P, Jones, N S, Riley, N J, Pickett, E A, Young, B, Holliday, D W, Ball, D F, Molyneux, S G, Long, D, Power, G M and Roberts, D H. 2001. Geology of the Isle of Man and its offshore area. British Geological Survey Research Report, RR/01/06. 
McMillan, A A, Hamblin, R J O and Merritt, J W. 2005. An overview of the lithostratigraphical framework for the Quarternary and Neogene deposits of Great Britain (onshore). British Geological Survey Research Report RR/04/04. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable