Other
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984gecoa..48.1401n&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 48, July 1984, p. 1401-1416.
Other
20
Chondrites, Inclusions, Meteoritic Composition, Titanium Isotopes, Anomalies, Carbonaceous Chondrites, Mass Spectroscopy, Nuclear Fusion, Oxygen Isotopes, Pyroxenes, Solar System, Meteorites, Titanium, Isotopes, Anomalies, Samples, Meteorite, Data, Analysis, Allende, Inclusions, Patterns, Texture, Comparisons, Fun, Mineralogy, C1 Chondrites, C2 Chondrites, Matrix, Chondrules, Origin, Equilibration, Ordinary Chondrites, Source, Formation, Heterogeneity
Scientific paper
Studies of Ti isotopic compositions have shown that virtually every Ca-Al-rich Allende inclusion contains anomalous Ti. The present investigation is concerned with the results of a study of Ti isotopic compositions in meteorites. One objective of the study is to evaluate the possibility of a relation between oxygen and Ti anomalies, while another objective is to explore questions regarding the origin of the Ti anomalies. A summary of the major experimental findings of the study of Ti isotopic compositions is also presented. It is noted that an assessment of the implications of the Ti results favors a chemical memory type of model in which products from various nucleosynthetic sources survive in mineral grains. Isotopic heterogeneities are then preserved due to incomplete mixing and/or equilibriation with the bulk of solar system matter. Strong arguments are found to exist against a pure late supernova injection model.
Lugmair Guenter W.
Neimeyer S.
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