The BGS Lexicon of Named Rock Units — Result Details

Barnes High Sandstone Member

Computer Code: BHSA Preferred Map Code: notEntered
Status Code: Full
Age range: Barremian Age (KB) — Barremian Age (KB)
Lithological Description: Medium-grained yellow to grey sandstone as a single unit. In Compton Bay the member comprises three coarsening-upward sandstones separated by laminated mudstones. Topmost bed usually comprises a thin mudstone and bivalve conglomerate.
Definition of Lower Boundary: The lower boundary is conformable and marked by an abrupt or gradational change from grey mudstone and fine-grained sandstone of the Cowleaze Chine Member of the Vectis Formation up into to medium-grained yellow sandstone of this formation.
Definition of Upper Boundary: The upper boundary is conformable at a sharp but irregular contact between medium-grained sandstone (or mudstone/bivalve conglomerate) of the formation and the overlying rhythmically-bedded fine-grained sandstones, siltstones and mudstones of the Shepherd's Chine Member of the Vectis Formation
Thickness: 2.5 to 7m.
Geographical Limits: Limited to the Isle of Wight.
Parent Unit: Vectis Formation (VTIS)
Previous Name(s): SANDSTONE OF COWLEAZE DOWN AND BARNES HIGH
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Compton Bay, west of Shippard's Chine [SZ 3750 8440]. 
Type Section  Barnes High [SZ 4376 8068] to Shepherd's Chine [SZ 4466 7982] in Brightstone Bay, Isle of Wight. 
Reference Section  Sandown Bay, Isle of Wight from Yaverland [SZ 6140 8510] to Red Cliff [SZ 6174 8524]. 
Reference(s):
Daley, B and Stewart, D J. 1979. Weekend field meeting: The Wealden Group in the Isle of Wight. Proceedings of the Geologists' Association, Vol.90, 51-54. 
Arkell, W J. 1947. The Geology of the country around Weymouth, Swanage, Corfe and Lulworth. Memoir of the Geological Survey of Great Britain, Sheets 341, 342, 343 and parts of 327, 328 and 329 (England and Wales). 
Insole, A, Daley, B and Gale, A. 1998. The Isle of Wight. Geologists' Association Guide, No.60. (The Geologists' Association.) 
Kerth, M and Hailwood, E A. 1988. Magnetostratigraphy of the Lower Cretaceous Vectis Formation (Wealden Group) on the Isle of Wight, southern England. Journal of the Geological Society, Vol.145, 351-360. 
Osborne White, H J. 1921. A short account of the geology of the Isle of Wight. Memoir of the Geological Survey of Great Britain (England and Wales). 
Stewart, D J. 1981. A field guide to the Wealden Group of the Hastings area and the Isle of Wight. 3.1-3.32 in Elliott, T (Editor), Field Guides to Modern and Ancient Fluvial Systems in Britain and Spain, International Fluvial Conference, Keele University, UK. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable