On the distribution of noble gases in Allende - A differential oxidation study

Details On the distribution of noble gases in Allende - A differential oxidation study On the distribution of noble gases in Allende - A differential oxidation study

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981e%26psl..56...45f&link_type=abstract

Earth and Planetary Science Letters, vol. 56, Dec. 1981, p. 45-63.

Computer Science

21

Carbonaceous Chondrites, Isotopes, Mass Spectroscopy, Meteoritic Composition, Oxidation, Rare Gases, Abundance, Gas Analysis, Outgassing, Oxygen, Spectroscopic Analysis, Meteorites, Rare Gases, Distribution, Allende, Samples, Meteorite, Gases, Laboratory Studies, Cv3 Chondrites, Spectrometry, Oxidation, Techniques, Carbonaceous Chondrites, Equipment, Diagrams, Experiments, Argon, Neon, Krypton, Isotopes, Residue, Radiogenic Material

Scientific paper

The investigation makes use of an oxidizing technique which is based on methods widely employed in light stable isotope analysis. The utilization of closed-system differential combustion in molecular oxygen in an ultra-high vacuum system on-line with a spectrometer makes it possible to conduct precise abundance and isotopic measurements of all gases released in progressive oxidation and/or thermal outgassing of the host phases. Attention is given to the noble gases mobilized in progressive oxidation of a carbon-rich acid residue and a fine-grained matrix separate. The progressive oxidation of the Allende matrix is discussed. Release occurred over three distinct intervals, characterized by oxidation below 600 C, gas mobilization between 630 and 750 C, and high-temperature diffusive release.

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