| 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): |
Whitecliff Sand Member
|
| 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): |
| British Geological Survey. 1980. 1:10 000 Sheet SU51NW (1980 version including details of selected boreholes and sections). Surveyor R C Scrivener. |
| 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). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E315
E316
|
