Martian Meteorites Record Surface Temperatures on Mars

Details Martian Meteorites Record Surface Temperatures on Mars Martian Meteorites Record Surface Temperatures on Mars

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005psrd.repte..96t&link_type=abstract

Planetary Science Research Discoveries

Physics

Mars, Martian, Climate Change, Nakhlites, Alh84001, Surface Temperature, Desert

Scientific paper

Using published data for argon (Ar) released when Martian meteorites are heated, David Shuster (California Institute of Technology, now at Berkeley Geochronology Center, Berkeley, CA) and Benjamin Weiss (Massachusetts Institute of Technology) show that the nakhlite group of Martian meteorites and unique Martian meteorite ALH 84001 were probably not heated above about 0 degree C for most of their histories. This indicates that the surface of Mars has been cold for almost four billion years. If a warm, wet environment existed on Mars (inferred from previous studies of surface features and geochemical parameters), it occurred before four billion years ago.

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