The BGS Lexicon of Named Rock Units — Result Details

Lune Valley Formation

Computer Code: LUNV Preferred Map Code: notEntered
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): Swettenham Formation (-4546)
Includes The Fluvial Parts Of Swettenham And Lytham Formations (-1672)
Lytham Formation (LTHM)
Alternative Name(s): none recorded or not applicable
Type Area  the area encompassing the three river terraces and alluvium of the River Lune. Thomas in Bowen (1999). 95pp. 
Reference Section  Lansil Ltd. Water borehole, Lancaster. BGS Borehole Ref: SD46SE1B. 
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. 
Brandon, A, Aitkenhead, N, Crofts, R G, Ellison, R A, Evans, D J and Riley, JN J, 1998. Geology of the country around Lancaster. Memoir of the British Geological Survey, Sheet 59 (England and Wales). 
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