Isna - an unusual C3(O) carbonaceous chondrite

Details Isna - an unusual C3(O) carbonaceous chondrite Isna - an unusual C3(O) carbonaceous chondrite

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983e%26psl..65....1e&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 65, no. 1, Oct. 1983, p. 1-6. Research supported by the Alexander von

Computer Science

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Carbonaceous Chondrites, Cosmic Rays, Meteoritic Composition, Radioactive Age Determination, Cobalt 60, Cosmochemistry, Neon Isotopes, Nuclides, Particle Tracks, Rare Gases, Xenon Isotopes, Meteorites, Carbonaceous Chondrites, C3 Chondrites, Stony Meteorites, Isna, Classification, Petrology, Chemistry, Thermal Effects, Rare Gases, Comparisons, Cosmic Rays, Tracks, Nuclides, Experiments, Spectrometry, Radioactive Elements, Cosmogenic Elements, Terrestrial Ages, Size

Scientific paper

The elemental and isotopic compositon of noble gases and the concentration of cosmogenic 10Be, 26Al, 53Mn and 60Co in the carbonaceous chondrite Isna are reported. The cosmic ray exposure age of this meteorite determined by different conventional methods is ≡0.2×106years. The low cosmic ray exposure age and the low Ne/Xe ratio in its trapped noble gases make Isna unusual among the known C3(O) carbonaceous chondrites.

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