Ubiquitous isotopic anomalies in TI from normal Allende inclusions

Details Ubiquitous isotopic anomalies in TI from normal Allende inclusions Ubiquitous isotopic anomalies in TI from normal Allende inclusions

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981e%26psl..53..211n&link_type=abstract

Earth and Planetary Science Letters, vol. 53, no. 2, Apr. 1981, p. 211-225.

Computer Science

42

Anomalies, Geochemistry, Meteoritic Composition, Rocks, Titanium Isotopes, Inclusions, Nuclear Fusion, Meteorites, Allende Meteorite, Titanium, Anomalies, Isotopes, Models, Inclusions, Analysis, Fun, Abundance, Samples, Meteorite, Grain Size, Terrestrial, Comparisons, Composition, Origin, Nucleosynthesis, Enrichment, Source Medium, Experiments, Data, Fractionation

Scientific paper

A novel technique for the high-precision isotopic analysis of titanium was applied to three terrestrial rocks and coarse- and fine-grained Allende inclusions. Repeated analyses of the three terrestrial rocks gave excellent agreement with a Ti metal standard. All seven Allende inclusions were previously determined to contain isotopically normal Nd and/or Sm, indicating that none belongs to a small group of peculiar intrusions. The discovery of widespread Ti isotopic anomalies in normal Allende inclusions establishes Ti as the first non-noble gas element studied since oxygen to show such isotopic heterogeneity. A survey of nucleosynthetic origins of Ti isotopes suggests that the dominant Ti-50 excesses in these inclusions are due to the relative enrichment of isotopes synthesized during hydrostatic burning in, or near, the core of a massive star.

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