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
Stratotypes:
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. 
Reference(s):
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, JN J, 1998. Geology of the country around Lancaster. Memoir of the British Geological Survey, Sheet 59 (England and Wales). 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable