| Computer Code: |
RSX |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Pleistocene Epoch (QP)
— Holocene Epoch (QH) |
| Lithological Description: |
Sands, sandy gravels, gravels, some being clayey. The gravel component is predominantly subangular flint with subordinate debris of chert, polished quartz grains and larger fragments of pebbly ferruginous sandstone derived from the Lower Cretaceous sequences to the north. Subrounded flint nodules are also present in places. Locally clayey and sandy silt and silty clay mask the sands and gravels, perhaps indicating preservation of overbank or aeolian deposits at the top of the fluvial cycle.
The River Rother in Sussex has five aggradations above the alluvium.
Pleistocene to Holocene (MIS pre-13 - 1). |
| Definition of Lower Boundary: |
Incises bedrock or older superficial deposits. |
| Definition of Upper Boundary: |
At surface or locally overlain by younger deposits including head. |
| Thickness: |
Each terrace averages 4 m thick, reaching to 8 to 10 m locally. |
| Geographical Limits: |
Chichester and Bognor district. |
| Parent Unit: |
Sussex Catchments Subgroup (SXCAT)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Valley of the River Rother. Aldiss, 2002. |
| Reference(s): |
| 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. |
| Aldiss, D T. 2002. Geology of the Chichester and Bognor district. Sheet Explanation of the British Geological Survey, 1:50 000 Series Sheet 317 and Sheet 332 (England and Wales). |
| Reid, C. 1903. The geology of the country around Chichester. Memoir of the Geological Survey of England and Wales. Sheet 317 (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E300
E301
E317
|
