A short timescale for terrestrial planet formation from Hf–W chronometry of meteorites

  title={A short timescale for terrestrial planet formation from Hf–W chronometry of meteorites},
  author={Qing-zhu Yin and Stein B. Jacobsen and Koujun Yamashita and Janne Blichert‐Toft and Philippe Telouk and Francis Albar{\`e}de},
Determining the chronology for the assembly of planetary bodies in the early Solar System is essential for a complete understanding of star- and planet-formation processes. Various radionuclide chronometers (applied to meteorites) have been used to determine that basaltic lava flows on the surface of the asteroid Vesta formed within 3 million years (3 Myr) of the origin of the Solar System. Such rapid formation is broadly consistent with astronomical observations of young stellar objects, which… 
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THE accretion of the Earth and Moon within the solar nebula is thought1–3 to have taken 50 to 100 million years. But the timing of formation of the Earth's core has been controversial, with some4,5
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