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Craig O’Neill

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Articles

  • Formation and composition of Earth’s Hadean protocrust - Nature

    3 weeks ago | nature.com | Simon R. Turner |Bernard Wood |Tim Johnson |Craig O’Neill

    AbstractAlthough Earth, together with other terrestrial planets, must have had an early-formed protocrust, the chemical composition of this crust has received little attention. The protocrust was extracted from an extensive magma ocean formed by accretion and melting of asteroidal bodies1. Both experimental and chronological data suggest that the silicate melt ascending from this magma ocean formed in equilibrium with, or after, metal was extracted to form Earth’s core.

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