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Geological Society, London, Special Publications; 1996; v. 101; p. 195-203;
DOI: 10.1144/GSL.SP.1996.101.01.12
© 1996 Geological Society of London

Regional Studies: Stratigraphy, Tectonics and Volcanism

The ‘Oldhaven magnetozone’ in East Anglia: a revised interpretation

J. R. Ali1, E. A. Hailwood1,2 & C. King3

1 Department of Oceanography, The University, Southampton SO9 5NH, UK Earth Sciences, UNIMAS, 94300 Kota Samarhan, Sarawak, Malaysia
2 Core Magnetics Ltd, The Green, Frostrow Lane, Sedbergh, Cumbria LA10 5JS, UK
3 , 41 Montem Road, New Malden, Surrey KT3 3QU, UK

A palaeomagnetic study has been carried out on the type Harwich Formation and basal London Clay Formation in the Ispwich area of East Anglia. Both units were deposited during the middle part of geomagnetic Chron C24r. The normal polarity magnetization previously identified in the upper part of the Harwich Formation at Wrabness (Townsend & Hailwood 1985, Journal of the Geological Society, London, 142, 1–27), and called the ‘Oldhaven magnetozone’ by these authors, is now regarded as a recent overprint. The new information is critical in linking the Paleocene-Eocene boundary to NW Europe where the internationally recognized early Eocene Ypresian stage stratotype is defined.