The BGS Lexicon of Named Rock Units — Result Details

Durley Sand Member

Computer Code: DYSA Preferred Map Code: Du
Status Code: Full
Age range: Eocene Epoch (GE) — Eocene Epoch (GE)
Lithological Description: Buff, clayey, fine-grained sand.
Definition of Lower Boundary: Appearance of sandy clay and sandy silt in coarsening-upwards sequence of Division D (1) of London Clay of King (1981).
Definition of Upper Boundary: Erosional surface at base of Wittering Formation (laminated clays or sands).
Thickness: Up to 8m. Lenticular.
Geographical Limits: Known only in the Durley area of Hampshire, north-east of Southampton. As mapped confined to 1: 10 000 Sheet SU51NW. Passes laterally into Whitecliff Member or wedged out.
Parent Unit: London Clay Formation (LC)
Previous Name(s): Whitecliff Sand Member (WHI)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  Drainage cutting adjacent to disused sand pit 700m eastnortheast of Holy Cross Church, Durley. Notes on 1: 10 000 geological Sheet SK51NW (Scrivener, 1970). 
Reference(s):
Edwards, R A and Freshney, E C. 1987. Geology of the country around Southampton. Memoir of the British Geological Survey, Sheet 315 (England and Wales). 
King, C, 1981. The stratigraphy of the London Clay and associated deposits. Tertiary Research Special Paper No.6. (Backhuys: Rotterdam). 
British Geological Survey 1: 10 000 Sheet SU51NW (1980 version including details of selected boreholes and sections). Surveyor R C Scrivener. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E315 E316