Noble gases and the classification of Brachina

Details Noble gases and the classification of Brachina Noble gases and the classification of Brachina

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985metic..20...69o&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 20, March 31, 1985, p. 69-78.

Computer Science

9

Argon Isotopes, Meteoritic Composition, Rare Gases, Xenon Isotopes, Abundance, Classifying, Helium Isotopes, Neon Isotopes, Solidification, Xenon 129, Meteorites, Brachina, Rare Gases, Classification, Snc Meteorites, Ages, Radiogenic Elements, Xenon, Argon, Comparisons, Abundance, Pattern, Silicate, Inclusions, Iron Meteorites, Campo Del Cielo, Udei Station, Helium, Neon, Exposure Age, Irradiation, Spallogenics, Diffusion

Scientific paper

The noble gas systematics of the Brachina meteorite were investigated experimentally, in order to confirm its classification as a Shergotite-Nakhlite-Chassignite (SNC) meteorite. It is shown that the noble gas characteristics of Brachina are very dissimilar to those of the SNC meteorites: the whole-rock K-Ar gas retention age of Brachina was 3.11 + or - 0.07, as compared to the solidification of 1.3 AE of the SNC meteorites; the content of radiogenic metastable Xe-129 in Brachina was 3.47 + or - 15 x 10 to the -10th cu cm STP/g, which is about two orders of magnitude higher than in SNC meteorites. Additional differences are given in a table.

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