Oxygen isotopic evidence for vigorous mixing during the Moon-forming Giant Impact
Earth and Planetary Astrophysics
2016-03-16 v1
Abstract
Earth and Moon are shown here to be composed of oxygen isotope reservoirs that are indistinguishable, with a difference in {\Delta}"17O of -1 +/- 5ppm (2se). Based on these data and our new planet formation simulations that include a realistic model for oxygen isotopic reservoirs, our results favor vigorous mixing during the giant impact and therefore a high-energy high- angular-momentum impact. The results indicate that the late veneer impactors had an average {\Delta}"17O within approximately 1 per mil of the terrestrial value, suggesting that these impactors were water rich.
Keywords
Cite
@article{arxiv.1603.04536,
title = {Oxygen isotopic evidence for vigorous mixing during the Moon-forming Giant Impact},
author = {Edward D. Young and Issaku E. Kohl and Paul H. Warren and David C. Rubie and Seth A. Jacobson and Alessandro Morbidelli},
journal= {arXiv preprint arXiv:1603.04536},
year = {2016}
}