The BGS Lexicon of Named Rock Units — Result Details

Waldringfield Member

Computer Code: WALD Preferred Map Code: notEntered
Status Code: Full
Age range: Quaternary Period (Q) — Quaternary Period (Q)
Lithological Description: Sand and gravel, containing only durable, mostly angular and sub-angular lithologies, particularly flint. Also contains significant quartz and quartzite clasts. Compared to older members the Waldringfield Member contains more flint, and quartzites are less commonly colourless. Palaeo current directions are to the north-east.
Definition of Lower Boundary: Unconformable on bedrock.
Definition of Upper Boundary: Overlain by Lowestoft Formation till and outwash sand and gravel. Outwash sand and gravel may contain chalk clasts and is generally less well sorted than the Waldringfield Member. Palaeo-current directions in the overlying sands and gravels are typically towards the south or south-east.
Thickness: Up to 5.3m.
Geographical Limits: Restricted to course of early River Thames in Suffolk and Essex.
Parent Unit: Colchester Formation (CCHR)
Previous Name(s): none recorded or not applicable
Alternative Name(s): Kesgrave Sand And Gravel, Kesgrave Formation
Stratotypes:
Type Section  Waldringfield Allen,1984; Rose and Allen, 1977 
Reference(s):
Rose, J and Allen, P, 1977. Middle Pleistocene stratigraphy in south-east Suffolk. Quarterly Journal of the Geological Society of London, Vol.133, p.83-102. 
Allen, P. Ed. 1984. Field guide to the Gipping and Waveney valleys, Suffolk, May 1984. Cambridge, Quaternary Research Association. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable