Hf-W Isotopic Evidence for Rapid Accretion and Differentiation in the Early Solar System
- 13 December 1996
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 274 (5294) , 1876-1879
- https://doi.org/10.1126/science.274.5294.1876
Abstract
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.Keywords
This publication has 15 references indexed in Scilit:
- Abundances of Actinides and Short-lived Nonactinides in the Interstellar Medium: Diverse Supernova Sources for the [ITAL]r[/ITAL]-ProcessesThe Astrophysical Journal, 1996
- Early evolution of the Earth and Moon: new constraints from Hf-W isotope geochemistryEarth and Planetary Science Letters, 1996
- Re-Os Ages of Group IIA, IIIA, IVA, and IVB Iron MeteoritesScience, 1996
- Hafnium–tungsten chronometry and the timing of terrestrial core formationNature, 1995
- UPb systematics of phosphates from equilibrated ordinary chondritesEarth and Planetary Science Letters, 1994
- The oldest zircons in the solar systemEarth and Planetary Science Letters, 1992
- Manganese—chromium isotope systematics and the development of the early Solar SystemNature, 1988
- Aluminum-26 in the early solar system - Fossil or fuelThe Astrophysical Journal, 1977
- The composition of stony meteorites (VII) observations on fractionation between the L and H chondritesEarth and Planetary Science Letters, 1970
- Determination of the Age of the ElementsPhysical Review Letters, 1960