| Computer Code: |
CQU |
Preferred Map Code: |
CQU |
| Status Code: |
Full |
| Age range: |
Devensian Stage (QD)
— Holocene Epoch (QH) |
| Lithological Description: |
Mainly sand and gravel forming river terraces and silty, clayey sand forming floodplains and concealing sand and gravel. Including units of silty sand, silt, clay and peat. Clasts mainly sandstone, gritstone, mudstone, limestone and coal. |
| Definition of Lower Boundary: |
Sharp, undulating, erosional contact, mainly on grey tills (diamicton) of the North Pennine or North Sea Coast Glacigenic subgroups, or on bedrock. |
| Definition of Upper Boundary: |
Ground surface, locally covered by peat. |
| Thickness: |
To 10m |
| Geographical Limits: |
The valleys of the River Coquet, Aln and Wansbeck and their tributaries, northern England |
| Parent Unit: |
Northumbria Catchments Subgroup (NCAT)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
The valleys of the River Coquet, Aln and Wansbeck and their tributaries, northern England. Bowen,1999. |
| Reference(s): |
| Boulton, G S. 1992. Quaternary. 413-444 in Geology of England and Wales. Duff, P M D, and Smith, A J (editors). (London: The Geological Society.) |
| 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. |
| Bowen, D Q. 1999. A revised correlation of Quaternary 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 |
