Computer Science
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986nascp2403...71k&link_type=abstract
In NASA, Washington. Interrelationships among Circumstellar, Interstellar and Interplanetary Dust p 71-108
Computer Science
1
Anomalies, Chemical Composition, Isotopes, Meteorites, Abundance, Cosmic Rays, Fractionation, Inclusions, Nuclear Fusion, Radioactive Decay, Spalling
Scientific paper
Primordial is a term which applied to material that entered the solar system early and became incorporated into a meteorite without totally losing its identity. Identification of such material surviving in meteorites is so far solely through recognition of anomalous isotopic compositions of generally macroscopic entities contained within those meteorites. Isotopic anomalies are, by definition, isotopic compositions which differ from the canonical solar system abundances in ways which cannot be explained in terms of local processes such as mass dependent fractionation, cosmic ray induced spallation or decay of radionuclides. A comprehensive account of isotopic anomalies is impractical here, so it is necessary to be selective. Issues which are potentially addressable through the study of such primordial material are examined. Those issues will be illustrated with specific, but not exhaustive, examples.
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