The BGS Lexicon of Named Rock Units — Result Details

Wyre Valley Formation

Computer Code: WYRV Preferred Map Code: notEntered
Status Code: Full
Age range: Devensian Stage (QD) — Holocene Epoch (QH)
Lithological Description: Probably dominantly silt, sand and clay with gravel and peat.
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.
Thickness: Highly variable depending on the relative stratigraphical position of the component units. In the major river valleys the thickness might vary between 2 and 5m, but probably does not exceed 10m.
Geographical Limits: Cumbria and Lancashire.
Parent Unit: Cumbria-Lancashire Catchments Subgroup (CLCA)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Alluvium and river terrace deposits of the valley of the River Wyre. 
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. 
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