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Cooling of the Earth and core formation after the giant impact

Author

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  • Bernard J. Wood

    (University of Bristol
    Macquarie University)

  • Alex N. Halliday

    (University of Oxford)

Abstract

Beat the clock One aspect of early Earth evolution that remains puzzling is the discrepancy between the more rapid formation time of the core given by the decay of hafnium to tungsten than by the clock based on the decay of uranium to lead. Wood and Halliday suggest that the explanation may be that the Hf–W clock represents the principal phase of core formation before the giant impact that formed the Moon. The upheaval introduced oxidation and the formation of a sulphur-rich metal in to which lead would have dissolved preferentially, in effect resetting the U–Pb clock to a younger date.

Suggested Citation

  • Bernard J. Wood & Alex N. Halliday, 2005. "Cooling of the Earth and core formation after the giant impact," Nature, Nature, vol. 437(7063), pages 1345-1348, October.
    • Handle: RePEc:nat:nature:v:437:y:2005:i:7063:d:10.1038_nature04129
    DOI: 10.1038/nature04129
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    Cited by:

    1. Yifan Tian & Peiyu Zhang & Wei Zhang & Xiaolei Feng & Simon A. T. Redfern & Hanyu Liu, 2024. "Iron alloys of volatile elements in the deep Earth’s interior," Nature Communications, Nature, vol. 15(1), pages 1-7, December.

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