Oxygen isotopic evidence for vigorous mixing during the Moon-forming giant impact

Edward D. Young*, Issaku E. Kohl, Paul H. Warren, David C. Rubie, Seth A. Jacobson, Alessandro Morbidelli

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

103 Scopus citations

Abstract

Earth and the Moon are shown here to have indistinguishable oxygen isotope ratios, with a difference in D?17 O of -1 ± 5 parts per million (2 standard error). On the basis of these data and our new planet formation simulations that include a realistic model for primordial 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 D?17 O within approximately 1 per mil of the terrestrial value, limiting possible sources for this late addition of mass to the Earth-Moon system.

Original languageEnglish (US)
Pages (from-to)493-496
Number of pages4
JournalScience
Volume351
Issue number6272
DOIs
StatePublished - Jan 29 2016

ASJC Scopus subject areas

  • General

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