Hf-W Isotopic Evidence for Rapid Accretion and Differentiation in the Early Solar System

Details Hf-W Isotopic Evidence for Rapid Accretion and Differentiation in the Early Solar System Hf-W Isotopic Evidence for Rapid Accretion and Differentiation in the Early Solar System

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996sci...274.1876l&link_type=abstract

Science, Volume 274, Issue 5294, pp. 1876-1879

Physics

63

Scientific paper

The time scales over which inner solar system objects accreted and differentiated are unclear because the isotopic systems of many meteorites are disturbed. 182Hf decays to 182W with a half-life of 9 million years and is a particularly useful chronometer because both elements are highly refractory and immobile. Tungsten isotopic data for IIA, IIIA, IVA, and anomalous iron meteorites and H, L, and LL chondrites indicate that their parent bodies accreted rapidly and segregated metal within just a few million years.

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