Unequilibrated ordinary chondrites - A tentative subclassification based on volatile-element content

Details Unequilibrated ordinary chondrites - A tentative subclassification based on volatile-element content Unequilibrated ordinary chondrites - A tentative subclassification based on volatile-element content

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985gecoa..49.1281a&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 49, May 1985, p. 1281-1291.

Computer Science

8

Chondrites, Meteoritic Composition, Recrystallization, Solar Corona, Thermoluminescence, Volatility, Abundance, Carbon, Kamacite, Olivine, Oxidation, Rare Gases, Xenon, Meteorites, Equilibration, Ordinary Chondrites, Uocs, Classification, Volatiles, Elements, Compositon, Metamosphism, Chondrites, Alha77011, Stony Meteorites, Carbon, Xenon, Samples, Meteorite, Sharps, Ngawi, Antarctic Meteorites, Allan Hills Meteorites, Alha77299, Comparisons, Mezo-Madaras, Formation, Concentration

Scientific paper

In view of the lack of correlation sometimes encountered between the volatile content and metamorphism measures of primitiveness for unequilibrated ordinary chondrites (UOCs), a tentative classification scheme is developed which is based on volatile content and complements the Sears et al. (1980) scheme based on metamorphism. The classification is based primarily on C and Xe, which are not significantly affected by shock-induced reheating. It is noted that novel clues to the formation of chondrites may be derivable from Xe and C; their concentrations in UOCs vary by a factor greater than 5, yet the Xe/C ratio remains nearly constant at 0.0034 of the solar system ratio.

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