The BGS Lexicon of Named Rock Units — Result Details
Selsey Sand Formation
Computer Code: | SLSY | Preferred Map Code: | Slsy |
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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) |
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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 |