Computer Science
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981geokh.....1776m&link_type=abstract
(Akademiia Nauk SSSR, Vsesoiuznyi Simpozium po Stabil'nym Izotopam v Geokhimii, 8th, Moscow, USSR, Nov. 11-14, 1980.) Geokhimiia
Computer Science
1
Chemical Evolution, Isotopes, Meteoritic Composition, Rare Gases, Synthesis (Chemistry), Terrestrial Planets, Cosmochemistry, Heterogeneity, Iron Meteorites, Nebulae, Solar Wind, Stony Meteorites, Supernovae
Scientific paper
Presolar matter and supernova debris are thought to be identical. The central region of the primeval nebula was highly enriched in Fe, and it was here that the Fe-Ni alloy in iron meteorites and terrestrial planet cores was formed. Noble gases in meteorites have preserved a clear record of the chemical and isotopic heterogeneities in the nebula. The inertness of the noble gases gave them an 'immunity' to redistribution during the condensation process. Most of the Ar, Kr, and Xe in stony meteorites and terrestrial planets derives from the primeval component of Y-type noble gases, which contained no He or Ne. Attention is also given to type X and type S primordial components of noble gases.
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