The Trapped Heavy Noble Gases in Recently Found Martian Meteorites
نویسنده
چکیده
Introduction: Noble gases in Martian meteorites are an important source of our knowledge of composition and evolution of the volatile inventory of Mars [1]. Ancient (ALH 84001), fractionated (nakhlites), and recent atmosphere (shock-produced glass in shergottite EETA 79001) as well as at least one component originating from the interior (Chassigny) have been identified based on analyses of the Ar-Xe elemental and isotopic composition (e.g. [2-5]). While the interior contains Xe of solar isotopic composition, the atmosphere is fractionated relative to solar Xe favoring the heavier isotopes. Variations in the Xe/Xe ratio (~2.0-2.6) represent the evolution of the atmosphere [6].
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