The BGS Lexicon of Named Rock Units — Result Details
Westbury Ironstone Member
Computer Code: | WI | Preferred Map Code: | WI |
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Status Code: | Full | ||
Age range: | Oxfordian Age (JO) — Oxfordian Age (JO) | ||
Lithological Description: | Ironstone and limonitic oolite, yellowish brown, shelly. | ||
Definition of Lower Boundary: | Abrupt upward change from limestone of the Clavellata Beds into ferruginous oolite and ironstone. | ||
Definition of Upper Boundary: | Fairly rapid upward change from ironstone and ferruginous oolite to smooth grey clay of the Kimmeridge Clay. | ||
Thickness: | 0-5m | ||
Geographical Limits: | Westbury (mainly) to Steeple Ashton [905 570]. | ||
Parent Unit: | Sandsfoot Formation (SDT) | ||
Previous Name(s): | Iron Ore of Westbury [Obsolete Name and Code: Use WI]
(-4977)
Westbury Iron Ore [Obsolete Name and Code: Use WI] (-1276) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Old Westbury Iron Works. | ||
Reference(s): | |||
Blake, J F, and Huddleston, W H. 1877. On the Corallian rocks of England. Quarterly Journal of the Geological Society of London, Vol. 33, 260-405. | |||
Woodward, H B. 1895. the Jurassic Rocks of Britain. The Middle and Upper Oolitic rocks of England (Yorkshire excepted). Vol.5. Memoir or the Geological Survey of the United Kingdom. | |||
Arkell, W J. 1933. The Jurassic system in Great Britain. Oxford: Oxford University Press. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
E281 |