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

Mathieu Touboul (), Igor S. Puchtel () and Richard J. Walker ()
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Mathieu Touboul: Isotope Geochemistry Laboratory, University of Maryland
Igor S. Puchtel: Isotope Geochemistry Laboratory, University of Maryland
Richard J. Walker: Isotope Geochemistry Laboratory, University of Maryland

Nature, 2015, vol. 520, issue 7548, 530-533

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.

Date: 2015
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DOI: 10.1038/nature14355

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