The Late Asteroidal and Cometary Bombardment of Earth as Recorded in Water Deuterium to Protium Ratio

@article{Dauphas2000TheLA,
  title={The Late Asteroidal and Cometary Bombardment of Earth as Recorded in Water Deuterium to Protium Ratio},
  author={N. Dauphas and F. Robert and B. Marty},
  journal={Icarus},
  year={2000},
  volume={148},
  pages={508-512}
}
  • N. Dauphas, F. Robert, B. Marty
  • Published 2000
  • Physics
  • Icarus
  • The deuterium to protium (D/H) ratio of the deep mantle may be a remnant of the hydrogen isotopic composition of Earth forming planetesimals, which later evolved as a result of the late accretion of asteroids and comets. If so, the mass of asteroids and comets incident on Earth since the time of its accretion is estimated to be 4×1020–2×1022 kg. The combined use of water D/H ratios, the lunar cratering record, and terrestrial mantle siderophiles would favor a rather low mass fraction of comets… CONTINUE READING
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    References

    SHOWING 1-10 OF 66 REFERENCES
    Terrestrial mantle siderophiles and the lunar impact record
    • 114
    • Highly Influential
    The birth of the Earth's atmosphere: the behaviour and fate of its major elements
    • 91
    The major volatile elements of the Earth: Their origin, behavior, and fate
    • 127
    The chemistry of comets
    • A. Delsemme
    • Chemistry
    • Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
    • 1988
    • 60
    • Highly Influential