Time Constraints on Late Accretion to the Earth and Moon, and New Evidence for Early Mantle Differentiation Derived from Coupled Investigations of W and Os Isotope Compositions

Details Time Constraints on Late Accretion to the Earth and Moon, and New Evidence for Early Mantle Differentiation Derived from Coupled Investigations of W and Os Isotope Compositions Time Constraints on Late Accretion to the Earth and Moon, and New Evidence for Early Mantle Differentiation Derived from Coupled Investigations of W and Os Isotope Compositions

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012lpi....43.1923t&link_type=abstract

43rd Lunar and Planetary Science Conference, held March 19–23, 2012 at The Woodlands, Texas. LPI Contribution No. 1659, id.1923

Physics

Scientific paper

We report ^1^8^2W excesses in ~4.2-Ga-old rocks from the Nuvvuagittuq
greenstone belt. Combined with HSE and ^1^4^2Nd data, these isotopic
anomalies indicate differentiation of Earth’s mantle earlier than
the giant impact and the formation of the Moon.

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