Computer Science
Scientific paper
Feb 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.331..579b&link_type=abstract
Nature (ISSN 0028-0836), vol. 331, Feb. 18, 1988, p. 579-584.
Computer Science
70
Chromium Isotopes, Cosmochemistry, Manganese Isotopes, Meteoritic Composition, Solar System, Allende Meteorite, Chronology, Silicates, Spinel, Titanium Isotopes, Solar System, Manganese, Chromium 53, Isotopes, Formation, Composition, Samples, Meteorite, Anomalies, Isotopic Ratios, Decay, Nuclides, Indarch, Meteorites, Comparisons, Systematics, Allende, Eagle Station, Isochrons, Chronology, Mixing, Origin, Titanium, Samples, Meteorite, Tatahouine, Chainpur, Tibet
Scientific paper
High-precision measurements of the chromium isotope compositions of samples from meteorites reveal anomalies in the Cr-53/Cr-52 ratio which are believed to arise from in situ decay of the extinct short-lived nuclide Mn-53. The decay of Mn-53 to Cr-53 in the early solar system provides an additional chronometer with which to constrain the formation times of the small planetary bodies from which the meteorites originated. A comparison of chromium and titanium isotope anomalies shows them to be imperfectly correlated, bearing witness to the complexity of early solar system processes.
Allègre Claude J.
Birck Jean-Louis
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