Clues to early solar system history from chromium isotopes in carbonaceous chondrites

Details Clues to early solar system history from chromium isotopes in carbonaceous chondrites Clues to early solar system history from chromium isotopes in carbonaceous chondrites

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.358..465r&link_type=abstract

Nature (ISSN 0028-0836), vol. 358, no. 6386, Aug. 6, 1992, p. 465-470.

Computer Science

82

Carbonaceous Chondrites, Chromium Isotopes, Nuclear Fusion, Solar Corona, Solar System Evolution, Abundance, Grain Size, Universe

Scientific paper

The major mineral phases contained in individual carbonaceous chondrite meteorites exhibit both positive and negative anomalies in their Cr-54 abundances. No significant chromium-bearing phase has a terrestrial (solar) chromium isotopic composition. These observations provide evidence that the chromium isotopic composition of the solar system results from the mixing of several major components with distinct isotopic compositions. The formation of the solar nebula from material carrying different isotopic signatures may provide constraints on nucleosynthetic models.

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