Chondritic Meteorite Fragments Associated with the Permian-Triassic Boundary in Antarctica

  title={Chondritic Meteorite Fragments Associated with the Permian-Triassic Boundary in Antarctica},
  author={Asish R. Basu and Michail I. Petaev and Robert J. Poreda and Stein B. Jacobsen and Luann Becker},
  pages={1388 - 1392}
Multiple chondritic meteorite fragments have been found in two sedimentary rock samples from an end-Permian bed at Graphite Peak in Antarctica. The Ni/Fe, Co/Ni, and P/Fe ratios in metal grains; the Fe/Mg and Mn/Fe ratios in olivine and pyroxene; and the chemistry of Fe-, Ni-, P-, and S-bearing oxide in the meteorite fragments are typical of CM-type chondritic meteorites. In one sample, the meteoritic fragments are accompanied by more abundant discrete metal grains, which are also found in an… Expand
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