Extinct 244Pu from ancient zircons

Turner, Grenville and Harrison, T. Mark and Holland, Greg and Mojzsis, Stephen J. and Gilmour, Jamie (2004) Extinct 244Pu from ancient zircons. Science, 306 (5693). pp. 89-91. ISSN 0036-8075

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Abstract

We have found evidence, in the form of fissiogenic xenon isotopes, for in situ decay of 244Pu in individual 4.1- to 4.2-billion-year-old zircons from the Jack Hills region of Western Australia. Because of its short half-life, 82 million years, 244Pu was extinct within 600 million years of Earth's formation. Detrital zircons are the only known relics to have survived from this period, and a study of their Pu geochemistry will allow us to date ancient metamorphic events and determine the terrestrial Pu/U ratio for comparison with the solar ratio.

Item Type: Journal Article
Journal or Publication Title: Science
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 55263
Deposited By: ep_importer_pure
Deposited On: 20 Jun 2012 12:36
Refereed?: Yes
Published?: Published
Last Modified: 10 Jun 2019 21:22
URI: https://eprints.lancs.ac.uk/id/eprint/55263

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