The BGS Lexicon of Named Rock Units — Result Details
Bognor Sand Member
| Computer Code: | BOSA | Preferred Map Code: | BoS |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Eocene Epoch (GE) — Eocene Epoch (GE) | ||
| Lithological Description: | Glauconitic bioturbated or cross-bedded fine- and medium-grained sands, partially cemented. | ||
| Definition of Lower Boundary: | Incoming of sand and glauconite at the top of King's (1981) Division A of London Clay, (a coarsening upwards sequence of clays and silts). | ||
| Definition of Upper Boundary: | At Whitecliff Bay passes up into sandy clayey silts of Division A (King, 1981) aspect but elsewhere is cut out by erosion surface at the base of the silty clays of Division B1 of London Clay (King, 1981). | ||
| Thickness: | 5-10m | ||
| Geographical Limits: | Easternmost Hampshire Basin. Not mapped on or West of Southampton Sheet by BGS. | ||
| Parent Unit: | London Clay Formation (LC) | ||
| Previous Name(s): | Bognor Member [Obsolete Name and Code: Use BOSA]
(-3863)
Bognor Rock Bed [Obsolete Name and Code: Use BOSA] (-3864) Bognor Sand [Obsolete Name and Code: Use BOSA] (-2008) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Reference Section | Seacliffs in Whitecliff Bay, Isle of Wight. | ||
| Type Section | Foreshore at Bognor Regis. | ||
| Reference(s): | |||
| King, C. 1981. The stratigraphy of the London Clay and associated deposits. Tertiary Research Special Paper No.6. (Backhuys: Rotterdam). | |||
| 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: | |||
| E331 | |||