| 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 |
