Highly siderophile elements in Earth’s mantle as a clock for the Moon-forming impact

@article{Jacobson2014HighlySE,
  title={Highly siderophile elements in Earth’s mantle as a clock for the Moon-forming impact},
  author={Seth Andrew Jacobson and Alessandro Morbidelli and Sean N. Raymond and David P. O'Brien and Kevin J. Walsh and David C. Rubie},
  journal={Nature},
  year={2014},
  volume={508},
  pages={84-87}
}
According to the generally accepted scenario, the last giant impact on Earth formed the Moon and initiated the final phase of core formation by melting Earth’s mantle. A key goal of geochemistry is to date this event, but different ages have been proposed. Some argue for an early Moon-forming event, approximately 30 million years (Myr) after the condensation of the first solids in the Solar System, whereas others claim a date later than 50 Myr (and possibly as late as around 100 Myr) after… 
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