I-Xe and Ar-40-Ar-39 analyses of silicate from the Eagle Station pallasite and the anomalous iron meteorite Enon

Details I-Xe and Ar-40-Ar-39 analyses of silicate from the Eagle Station pallasite and the anomalous iron meteorite Enon I-Xe and Ar-40-Ar-39 analyses of silicate from the Eagle Station pallasite and the anomalous iron meteorite Enon

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983gecoa..47.1007n&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 47, June 1983, p. 1007-1012.

Computer Science

Argon Isotopes, Iron Meteorites, Meteoritic Composition, Silicates, Abundance, Anomalies, Plutonium, Xenon Isotopes, Meteorites, Iron Meteorites, Isotopes, Silicate, Eagle Station, Iodine, Xenon, Argon, Analysis, Pallasites, Anomalies, Iron Meteorites, Enon

Scientific paper

Silicate from two unusual iron-rich meteorites were analyzed by the I-Xe and 40Ar-39Ar techniques. Enon, an anomalous iron meteorite with chondritic silicate, shows no loss of radiogenic 40Ar at low temperature, and gives a plateau age of 4.59±0.03 Ga. The Eagle Station pallasite, the most 16O-rich meteorite known, gives a complex 40Ar-39Ar age pattern which suggests a recent (⪉0.85 Ga) severe thermal disturbance. The absence of excess 129Xe, and the low trapped Ar and Xe contents, are consistent with this interpretation.

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