| Computer Code: |
LHTH |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Quaternary Period (Q)
— Quaternary Period (Q) |
| Lithological Description: |
Quartz and quartzite-rich fluvial sands and gravels overlying Chalk bedrock. The gravels are distinguished from the Shouldram Thorpe Gravel Member by their difference in height. |
| Definition of Lower Boundary: |
Unconformable on Chalk bedrock. |
| Definition of Upper Boundary: |
Ground surface. |
| Thickness: |
Up to about 3 m. |
| Geographical Limits: |
Restricted to area around Lakenheath. |
| Parent Unit: |
Shouldham Sand and Gravel Formation (SMSG)
|
| Previous Name(s): |
River terrace (undifferentiated) [Obsolete Name and Code: Use RTD]
(-4762)
|
| Alternative Name(s): |
Bytham Sands and Gravels [Obsolete: use ISAG]
|
| Stratotypes: |
| Type Section |
The summit of Maidscross Hill, Lakenheath (Rose, 1987). |
| Reference(s): |
| Rose, J. 1987. Status of the Wolstonian glaciation in the British Quaternary. Quaternary Newsletter, Vol.53, 1-9. |
| 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 |
