The Martian meteorite paradox: Climatic influence on impact ejection from Mars?

Details The Martian meteorite paradox: Climatic influence on impact ejection from Mars? The Martian meteorite paradox: Climatic influence on impact ejection from Mars?

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007e%26psl.256...55f&link_type=abstract

Earth and Planetary Science Letters, Volume 256, Issue 1-2, p. 55-60.

Physics

3

Scientific paper

The large number of Martian meteorites with “young” crystallization ages (especially shergottites formed ˜ 170 Myr ago on Mars) represents a paradox, because it suggests that either the mean surface age of Mars is rather young or that specific source regions are preferentially amenable for impact sampling. We present a climate controlled scenario, in which surface regions of limited extent have been especially favored for impact ejection of Martian meteorites during the past ˜ 5 Myr. This conclusion implies that the ejection ages of the shergottites may be used to constrain the end of the last major glaciations on Mars.

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