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Sushil K. Atreya, Melissa G. Trainer, Heather B. Franz, Michael H. Wong, Heidi L. K. Manning, Charles A. Malespin, Paul R. Mahaffy, Pamela G. Conrad, Anna E. Brunner, Laurie A. Leshin, John H. Jones, Christopher R. Webster, Tobias C. Owen, Robert O. Pepin and R. Navarro-González Primordial argon isotope fractionation in the atmosphere of Mars measured by the SAM instrument on Curiosity and implications for atmospheric loss Geophysical Research Letters 40

Article first published online: 6 NOV 2013 | DOI: 10.1002/2013GL057763

Key Points

  • First high-precision measurement of primordial argon isotopes in Martian air
  • This measurement definitively ties the“martian” meteorites to Mars”
  • Requires massive loss of Martian atmosphere after the hydrodynamic escape phase

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