The BGS Lexicon of Named Rock Units — Result Details

Sussex Rother Formation

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.
Definition of Lower Boundary: Incises bedrock or older superficial deposits.
Definition of Upper Boundary: At surface or locally overlain by younger deposits including head and alluvium.
Thickness: Each terrace averages 4m thick, reaching to 8 to 10m in places.
Geographical Limits: Chichester and Bognor district.
Parent Unit: Sussex Catchments Subgroup (SXCAT)
Previous Name(s): none recorded or not applicable
Alternative Name(s): Sussex Rother Terrace Deposits
Stratotypes:
Type Area  Valley of the River Rother including multiple aggradations (Sussex Rother Terrace Deposits members 1 to 5). Aldiss, 2002. 
Reference(s):
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