| Computer Code: |
RDFD |
Preferred Map Code: |
symb |
| Status Code: |
Full |
| Age range: |
Devensian Stage (QD)
— Devensian Stage (QD) |
| Lithological Description: |
Sand and gravel. |
| Definition of Lower Boundary: |
Generally interpreted as where fluvial deposits rest on bedrock or older superficial deposits. |
| Definition of Upper Boundary: |
The present day river terrace upper surface, which may be overlain by alluvium. |
| Thickness: |
Variable, up to 5 m thick. |
| Geographical Limits: |
The valley of the River Leadon. |
| Parent Unit: |
Glynch Valley Formation (GLVA)
|
| Previous Name(s): |
Second (Worcester) Terrace of the Severn [Obsolete Name and Code: Use RDFD]
(-1138)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
The Rudford area of the Leadon Valley. The Rudford Member is correlated with the Worcester Member (formerly Second Terrace deposits) of the Severn Valley Formation (Maddy, 1999). |
| Reference(s): |
| Maddy, D. 1999. English Midlands Chapter 3 in Bowen, D Q (Editor), A revised correlation of the Quaternary deposits in the British Isles. Geological Society Special Report, No.23. |
| McMillan, A A, Hamblin, R J O, and Merritt, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03. 343pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
