Mathematics – Logic
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981gecoa..45.1563k&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 45, Sept. 1981, p. 1563-1572.
Mathematics
Logic
3
Carbonaceous Chondrites, Chemical Composition, Meteoritic Composition, Petrology, Trace Elements, Hafnium, Isotopes, Lead (Metal), Mass Spectroscopy, Ratios, Refractory Materials, Tellurium, Tin, Volatility, Zirconium, Orgueil Meteorite, Murray Meteorite, Murchison Meteorite, Meteorites, Yamato-74662, Yamato-6903, Renazzo Meteorite, Allende Meteorite, Data, Virgarano Meteorite, Leoville Meteorite, Lead, Comparisons, Pressure, Warrenton Meteorite, Isna Meteorite, Karoonda Meteorite, Experiments, Antarctic Me
Scientific paper
Twelve carbonaceous chondrites, among them representatives of nearly all known petrologic types, were analyzed for twenty trace elements by spark source mass spectrography combined with the isotope dilution method. Data on different element groups (refractory, moderately volatile and volatile) show that the distribution of the trace elements in the carbonaceous chondrites, with the exception of Renazzo, can be well explained by Anders' two-component model. This is also valid for the highly metamorphosed CV5 chondrite Karoonda. Furthermore, it is observed that the Zr/Hf-ratios in the carbonaceous chondrites increase with increasing petrologic type, which is interpreted as the result of mixing two components with different Zr/Hf-ratios.
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