Radiation ages of different fragments of the Sikhote-Alin meteorite fall

Details Radiation ages of different fragments of the Sikhote-Alin meteorite fall Radiation ages of different fragments of the Sikhote-Alin meteorite fall

Jun 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972gecoa..36..573k&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 36, Issue 5, pp.573-576

Physics

Scientific paper

Seven specimens from five different fragments of the Sikhote-Alin iron meteorite have been analyzed for their content of 39 Ar, 38 Ar, 21 Ne, and 3 He. The 39 Ar- 38 Ar-cosmic ray exposure ages calculated from these data are (450 ± 20) × 10 6 yr for four of the fragments, that of one fragment is only (145 ± 11) × 10 6 yr. The discrepancy is explained as due to a collisional break-up of the meteorite less than approximately 150 × 10 6 yr ago.

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