The terrestrial uranium isotope cycle

Morten B. Andersen (), Tim Elliott, Heye Freymuth, Kenneth W. W. Sims, Yaoling Niu and Katherine A. Kelley
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Morten B. Andersen: Bristol Isotope Group, School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK
Tim Elliott: Bristol Isotope Group, School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK
Heye Freymuth: Bristol Isotope Group, School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK
Kenneth W. W. Sims: University of Wyoming
Yaoling Niu: Durham University, Durham DH1 3LE, UK
Katherine A. Kelley: Graduate School of Oceanography, University of Rhode Island

Nature, 2015, vol. 517, issue 7534, 356-359

Abstract: Examination of the global uranium cycle — whereby uranium from the Earth’s crust is first transported to the oceans and then returned, by subduction, to the mantle — shows that the subducted uranium is isotopically distinct from the Earth as a whole and that this signature has been stirred throughout upper mantle, arguably within the past 600 million years.

Date: 2015
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DOI: 10.1038/nature14062

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