Absolute isotopic abundances of TI in meteorites

Details Absolute isotopic abundances of TI in meteorites Absolute isotopic abundances of TI in meteorites

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985gecoa..49..835n&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 49, March 1985, p. 835-851.

Computer Science

29

Abundance, Meteoritic Composition, Titanium Isotopes, Allende Meteorite, Calcium, Carbonaceous Meteorites, Inclusions, Orgueil Meteorite, Meteorites, Isotopes, Abundance, Titanium, Samples, Meteorite, Cais, Calcium, Aluminum, Inclusions, Allende, Loeville, Comparisons, Fun, Fractionation, Composition, Nucleosynthesis, Mixing, Equilibrium, Source, Formation, Carbonaceous Chondrites, C Chondrites, Orgueil, Enstatites, Condensation, Volatilization

Scientific paper

The absolute isotope abundance of Ti has been determined in Ca-Al-rich inclusions from the Allende and Leoville meteorites and in samples of whole meteorites. The absolute Ti isotope abundances differ by a significant mass dependent isotope fractionation transformation from the previously reported abundances, which were normalized for fractionation using 46Ti/48Ti. Therefore, the absolute compositions define distinct nucleosynthetic components from those previously identified or reflect the existence of significant mass dependent isotope fractionation in nature. The authors provide a general formalism for determining the possible isotope compositions of the exotic Ti from the measured composition, for different values of isotope fractionation in nature and for different mixing ratios of the exotic and normal components.

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