Early planestesimal melting from an age of 4.5662 gyr for differentiated meteorites
Article Abstract:
An age of 4.5662 plusmn 0.0001 billion years based on Pb-Pb dating for basaltic angrites, which is only 1 Myr younger than the presently accepted minimum age of the Solar System is reported. Results indicate that the accretion of differential planetesimals pre-dated that of undifferentiated planetesimals and the minimum Solar system are to be 4.5695 plusmn 0.0002 billion years.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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Mg isotope evidence for contemporaneous formation of chondrules and refractory inclusions
Article Abstract:
The presence of excess Magnesium resulting from in situ decay of the short-lived Al nuclide in CAIs and chondrules from the Allende meteorite is reported. The study indicates that chondrule formation processes recorded by Allende and other chondrites may have persisted for at least 2-3 Myr in the young Solar System.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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Early history of Earth's crust-mantle system inferred from hafnium isotopes in chondrites
Article Abstract:
The 176Lu to 176Hf decay series has been utilized widely to gain an understanding of the composition of the early crust-mantle system of Earth. However, the interpretation of Lu-Hf isotope information mandates precise knowledge of the radioactive decay constant of 176Lu, along with bulk-Earth reference parameters.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
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