The BGS Lexicon of Named Rock Units — Result Details
Lune Valley Formation
Computer Code: | LUNV | Preferred Map Code: | notEntered |
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Status Code: | Full | ||
Age range: | Devensian Stage (QD) — Holocene Epoch (QH) | ||
Lithological Description: | Dominantly silty and sandy alluvial sediments with gravel and sporadic cobbles and boulders. River Terrace deposits are mainly sand and gravel. | ||
Definition of Lower Boundary: | Probably unconformable, irregular and in places strongly incised into lithologically variable sediments of the Caledonia or Albion Glacigenic groups or into bedrock. | ||
Definition of Upper Boundary: | Ground surface or unconformable below artificial deposits. | ||
Thickness: | Generally less than 10m. | ||
Geographical Limits: | Cumbria and Lancashire within the river valley and tributaries of the River Lune. | ||
Parent Unit: | Cumbria-Lancashire Catchments Subgroup (CLCA) | ||
Previous Name(s): | Lytham Formation
(LTHM)
Includes the fluvial parts of Swettenham and Lytham Formations [Obsolete Name and Code: Use LUNV] (-1672) Lytham Formation (LTHM) Swettenham Formation [Obsolete Name and Code: Use CLCA, CNWCA, LUNV, MSYVA] (-4546) |
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Alternative Name(s): | Lytham Formation |
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Stratotypes: | |||
Reference Section | Lansil Ltd. Water borehole, Lancaster. BGS Borehole Ref: SD46SE1B. | ||
Type Area | the area encompassing the three river terraces and alluvium of the River Lune. Thomas in Bowen (1999). 95pp. | ||
Reference(s): | |||
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. | |||
Brandon, A, Aitkenhead, N, Crofts, R G, Ellison, R A, Evans, D J, and Riley, N J. 1998. Geology of the country around Lancaster. Memoir of the British Geological Survey, Sheet 59 (England and Wales). | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
none recorded or not applicable |