The BGS Lexicon of Named Rock Units — Result Details
Selsey Sand Formation
| Computer Code: | SLSY | Preferred Map Code: | Slsy |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Lutetian Age (GL) — Lutetian Age (GL) | ||
| Lithological Description: | Silty sand, silty clay and sandy clayey silt, glauconitic, bioturbated, locally calcareous. | ||
| Definition of Lower Boundary: | Rests on the Marsh Farm Formation at a sharp contact on a burrowed surface overlain by glauconitic sandy silt with a few pebbles. | ||
| Definition of Upper Boundary: | Overlain by Barton Clay Formation. Boundary based a distinction of sand content from fine- to very fine-grained sandstone of the Tellina Bed (topmost Selsey Formation) to the olive grey glauconitic sandy clays of the Barton Clay Formation. | ||
| Thickness: | c.25-27m | ||
| Geographical Limits: | Eastern Hampshire Basin. | ||
| Parent Unit: | Bracklesham Group (BRB) | ||
| Previous Name(s): | Selsey Formation [Obsolete Name and Code: Use SLSY]
(-3683)
Selsey "Division" [Obsolete Name and Code: Use SLSY] (-4332) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Seacliffs at Whitecliff Bay, Isle of Wight. | ||
| Partial Type 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 | |||