Tungsten isotopes and the origin of the Moon

  title={Tungsten isotopes and the origin of the Moon},
  author={T. Kruijer and T. Kleine},
  journal={Earth and Planetary Science Letters},
Abstract The giant impact model of lunar origin predicts that the Moon mainly consists of impactor material. As a result, the Moon is expected to be isotopically distinct from the Earth, but it is not. To account for this unexpected isotopic similarity of the Earth and Moon, several solutions have been proposed, including (i) post-giant impact Earth–Moon equilibration, (ii) alternative models that make the Moon predominantly out of proto-Earth mantle, and (iii) formation of the Earth and Moon… Expand
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Potassium isotopic evidence for a high-energy giant impact origin of the Moon
The K isotope result is inconsistent with the low-energy disk equilibration model, but supports the high-energy, high-angular-momentum giant impact model for the origin of the Moon. Expand
Identification of the giant impactor Theia in lunar rocks
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The results indicate that the late veneer impactors had an average Δ′17O within approximately 1 per mil of the terrestrial value, limiting possible sources for this late addition of mass to the Earth-Moon system. Expand
Lunar tungsten isotopic evidence for the late veneer
Data independently show that HSE abundances in the bulk silicate Earth were established after the giant impact and core formation, as predicted by the late veneer hypothesis and constitutes a challenge to current models of lunar origin. Expand
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