Age and temperature of shock metamorphism of Martian meteorite

  title={Age and temperature of shock metamorphism of Martian meteorite},
  author={Reiners and Stefan Nicolescu and James P. Greenwood}
Mineralogic features attributed to impact-induced shock metamorphism are commonly observed in meteorites and terrestrial impact craters. Partly because the duration of shock metamorphism is very short, constraining the timing and temperature of shock events has been problematic. We measured (U-Th)/He ages of single grains of merrillite and chlorapatite from the Martian meteorite Los Angeles (LA). Merrillite and chlorapatite ages cluster at 3.28 6 0.15 Ma (2s) and 2.18 6 0.19 (2s) Ma… CONTINUE READING


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