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Assessing the timing of greigite formation and the reliability of the Upper Olduvai polarity transition record from the Crostolo River, Italy

Roberts, A.P., Jiang, W.T., Florindo, F., Horng, C.S. and Laj, C. (2005) Assessing the timing of greigite formation and the reliability of the Upper Olduvai polarity transition record from the Crostolo River, Italy Geophysical Research Letters, 32, (5), L05307. (doi:10.1029/2004GL022137).

Record type: Article

Abstract

The Crostolo River section in Italy yielded a detailed record of the Upper Olduvai geomagnetic polarity transition that has been used to support the hypothesis of deep mantle control on the transitional geomagnetic field. The paleomagnetic record is carried by the authigenic iron sulphide, greigite, which was interpreted to have formed shortly after deposition. Our detailed scanning electron microscope investigations indicate the presence of at least 3 generations of pyrite, which usually forms with greigite as a precursor. This suggests that the total magnetization is a complex composite that produced a smoothed record of transitional field behaviour.

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Published date: 2005
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 17408
URI: http://eprints.soton.ac.uk/id/eprint/17408
ISSN: 0094-8276
PURE UUID: 3da198fa-ba07-4e07-be3a-a3df1e098e95

Catalogue record

Date deposited: 07 Sep 2005
Last modified: 17 Jul 2017 16:38

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Contributors

Author: A.P. Roberts
Author: W.T. Jiang
Author: F. Florindo
Author: C.S. Horng
Author: C. Laj

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