The BGS Lexicon of Named Rock Units — Result Details

Wittering Formation

Computer Code: WTT Preferred Map Code: Wtt
Status Code: Full
Age range: Ypresian Age (GY) — Lutetian Age (GL)
Lithological Description: Greyish brown laminated clay; wavy- to lenticular-bedded sand interbedded with clay in equal proportions; and fine- to medium-grained sparsely glauconitic sand.
Definition of Lower Boundary: Rests on London Clay, a dark grey bioturbated clay below with marked lithological change to interbedded glauconitic fine-grained sand and very silty clay above.
Definition of Upper Boundary: Overlain by Earnley Sand Formation, well marked by the transgressive basal surface of glauconitic silty sands with pebbles.
Thickness: 40-53m.
Geographical Limits: Eastern Hampshire Basin.
Parent Unit: Bracklesham Group (BRB)
Previous Name(s): WITTERING `DIVISION'
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Whitecliff Bay seacliffs, Isle of Wight. 
Reference Section  Bracklesham Bay foreshore. 
Reference(s):
Edwards, R A and Freshney, E C. 1987. Lithostratigraphical classification of the Hampshire Basin Palaeogene Deposits (Reading Formation to Headon Formation) Tertiary Research, Vol.8, 43-73. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E315 E331 E314