An extraterrestrial impact at the Permian-Triassic boundary?

Science. 2001 Sep 28;293(5539):2343. doi: 10.1126/science.293.5539.2343a.
No abstract available

MeSH terms

  • Argon / analysis
  • Carbon / analysis*
  • China
  • Geologic Sediments / chemistry*
  • Helium / analysis*
  • Isotopes
  • Meteoroids*
  • Paleontology*

Substances

  • Isotopes
  • Helium
  • Argon
  • Carbon