39Ar-40Ar and Space Exposure Ages of the Unique Portales Valley H-Chondrite

Details 39Ar-40Ar and Space Exposure Ages of the Unique Portales Valley H-Chondrite 39Ar-40Ar and Space Exposure Ages of the Unique Portales Valley H-Chondrite

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001lpi....32.1137g&link_type=abstract

32nd Annual Lunar and Planetary Science Conference, March 12-16, 2001, Houston, Texas, abstract no.1137

Physics

1

Scientific paper

The space exposure age of the unique Portales Valley H-chondrite is
~40-45 Myr. The 39Ar-40Ar ages of two samples are 4.477 +/-0.016 and
4.46 +/-0.02 Ga and show no evidence of more recent disturbance, in
contrast to previous radiometric determinations.

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