I-129/I-127 - A puzzling early solar system chronometer

Details I-129/I-127 - A puzzling early solar system chronometer I-129/I-127 - A puzzling early solar system chronometer

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980znata..35..145j&link_type=abstract

Zeitschrift für Naturforschung, Teil a, vol. 35 a, Feb. 1980, p. 145-170. Research supported by the Gesellschaft für Kernforsch

Mathematics

Logic

15

Chondrites, Chronology, Evolution (Development), Iodine, Radioactive Age Determination, Solar System, Xenon, Data Systems, Petrology, Solar Corona, Spallation, Tables (Data), Temperature Effects

Scientific paper

The paper reports on I-Xe ages and other relevant xenon data for seven ordinary chondrites from H and L-groups of petrologic types 4-6, which were selected on the basis of minimum weathering and shock effects. However, no chronological order with respect to the I-Xe ages exists among the different petrologic types. It is demonstrated, however, that the degree to which the I-Xe record is preserved in these chondrites, but not necessarily the age, is dependent on the thermal metamorphic history. To explain the lack of chronological order among the chondrites, spatiotemporal variations in the condensation-accretion process or inhomogeneities in the isotopic composition of iodine in the solar nebula is required.

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