| Computer Code: |
HEHI |
Preferred Map Code: |
HH |
| Status Code: |
Full |
| Age range: |
Priabonian Age (GI)
— Priabonian Age (GI) |
| Lithological Description: |
Divided into nine members (see Supplementary Information) comprising interbedded clay, silt and sand units with several limestone and lignite beds. Variably shelly. |
| Definition of Lower Boundary: |
The shelly silty clays and fine-grained sands with some lignite of the Totland Bay Member rest on an erosion surface overlying the fine- to medium cross-bedded sands of the Becton Sand Formation. |
| Definition of Upper Boundary: |
Everywhere the top of the formation is at the erosive contact into the various lithologies of the constituent members at the base of the Bembridge Limestone Formation. |
| Thickness: |
Up to 75 to 90m on the Isle of Wight. |
| Geographical Limits: |
The Isle of Wight and the mainland cliff sections from Barton-on Sea to Lepe Point and inland to include the New Milton, Lymington, Brockenhurst and Beaulieu areas in southern New Forest, Hampshire. |
| Parent Unit: |
Solent Group (SOLT)
|
| Previous Name(s): |
Headon Beds And Osborne Beds (Undifferentiated)
(HEOS)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Various localities at which the constituent members are exposed throughout the Isle of Wight and the southern Hampshire cliffs. |
| Reference(s): |
| King, C. In press. A correlation of Tertiary rocks in the British Isle and adjacent areas. Special Report of the Geological Society of London, No.12. |
| Insole, A, Daley, B, and Gale, A. 1998. The Isle of Wight. Geologists’ Association Guide. No. 60. (The Geologists’ Association.) |
| White, H J O. 1921. A short account of the geology of the Isle of Wight. Memoir of the Geological Survey of Great Britain, (1994 reprint). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E330
|
