| Computer Code: |
LWIB |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Quaternary Period (Q)
— Quaternary Period (Q) |
| Lithological Description: |
Sand and gravel, brown, with flint, chalk and quartzite pebbles. |
| Definition of Lower Boundary: |
Unconformable on Cretaceous Chalk. |
| Definition of Upper Boundary: |
At surface. |
| Thickness: |
At least 3m (Penning and Jukes-Browne,1881). |
| Geographical Limits: |
Restricted to several outcrops of sand and gravel between Cambridge and Little Wilbraham in the Cam valley, Cambridgeshire. |
| Parent Unit: |
Cam Valley Formation (CAMV)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
4th Terrace of River Cam [Obsolete]
|
| Stratotypes: |
| Type Area |
Extensive outcrop to north and north-west of Little Wilbraham. Penning and Jukes-Browne, 1881. |
| Reference(s): |
| Worssam, B C and Taylor, J H. 1969. The geology of the country around Cambridge. Memoir of the Geological Survey of Great Britain, Sheet 188 (England and Wales). |
| Penning, W H and Jukes-Browne, A J, 1881. Geology of the neighbourhood of Cambridge. Memoir of the Geological Survey, Old Series Sheets 51SW and part 51NW (England and Wales). |
| 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: |
|
E188
|
