The interstellar dust as a precursor of Ca,Al-rich inclusions in carbonaceous chondrites

Details The interstellar dust as a precursor of Ca,Al-rich inclusions in carbonaceous chondrites The interstellar dust as a precursor of Ca,Al-rich inclusions in carbonaceous chondrites

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981e%26psl..56...32w&link_type=abstract

Earth and Planetary Science Letters, vol. 56, Dec. 1981, p. 32-44.

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39

Aluminum, Calcium, Carbonaceous Chondrites, Cosmic Dust, Interstellar Matter, Meteoritic Composition, Abundance, Astronomical Models, High Temperature Environments, Oxygen Isotopes, Rare Earth Elements, Solar Corona, Meteorites, Parent Material, Dust, Cais, Inclusions, Oxygen, Isotopes, Carbonaceous Chondrites, Formation, Anomalies, Solar Nebula, Gases, Origin, Distillation, Residue, Depletion, Fractionation, Condensates, Models, Parameters, Rare Earth Elements, Theoretical Studies

Scientific paper

Multiple dust components are considered as a source of the observed anomalies in meteoritic oxygen isotope compositions. It is pointed out that these anomalies are not due to an incomplete mixing of several dust or gas-plus-dust components in the solar nebula. If they were, other elements would display similar anomalies. The anomalies must therefore stem from differing degrees of incomplete exchange of oxygen isotopes between the primordial gas and dust components of the nebula. The dust is more likely to have been the component which was enriched with 0-16. Since the isotopic difference between dust and gas probably could not have been preserved if the dust was ever completely vaporized in the nebula, the Ca,Al-rich inclusions in carbonaceous chondrites are unlikely to be condensates, but instead are distillation residues.

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