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Tungsten isotopic evidence for disproportional late accretion to the Earth and Moon

Author

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  • Mathieu Touboul

    (Isotope Geochemistry Laboratory, University of Maryland
    †Present address: Laboratoire de Géologie de Lyon, Ecole Normale Supérieure de Lyon, Labex LIO, Université Lyon 1, 46 Allée d’Italie 69364 Lyon Cedex 7, France.)

  • Igor S. Puchtel

    (Isotope Geochemistry Laboratory, University of Maryland)

  • Richard J. Walker

    (Isotope Geochemistry Laboratory, University of Maryland)

Abstract

Examination of three lunar samples reveals that the Moon’s mantle has an excess of the tungsten isotope 182W of about 20 parts per million relative to the present-day Earth’s mantle; this suggests that the two bodies had identical compositions immediately following the formation of the Moon, and that the compositions then diverged as a result of disproportional late accretion of chondritic material to the Earth and Moon.

Suggested Citation

  • Mathieu Touboul & Igor S. Puchtel & Richard J. Walker, 2015. "Tungsten isotopic evidence for disproportional late accretion to the Earth and Moon," Nature, Nature, vol. 520(7548), pages 530-533, April.
  • Handle: RePEc:nat:nature:v:520:y:2015:i:7548:d:10.1038_nature14355
    DOI: 10.1038/nature14355
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