Did Martian Meteorites Come From These Sources?

Details Did Martian Meteorites Come From These Sources? Did Martian Meteorites Come From These Sources?

Jan 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007psrd.repte.114m&link_type=abstract

Planetary Science Research Discoveries

Physics

Mars, Meteorites, Rayed Craters, Zunil, Gratteri, Themis, Thermal Infrared

Scientific paper

Large rayed craters on Mars, not immediately obvious in visible light, have been identified in thermal infrared data obtained from the Thermal Emission Imaging System (THEMIS) onboard Mars Odyssey. Livio Tornabene (previously at the University of Tennessee, Knoxville and now at the University of Arizona, Tucson) and colleagues have mapped rayed craters primarily within young (Amazonian) volcanic plains in or near Elysium Planitia. They found that rays consist of numerous chains of secondary craters, their overlapping ejecta, and possibly primary ejecta from the source crater. Their work also suggests rayed craters may have formed preferentially in volatile-rich targets by oblique impacts. The physical details of the rayed craters and the target surfaces combined with current models of Martian meteorite delivery and cosmochemical analyses of Martian meteorites lead Tornabene and coauthors to conclude that these large rayed craters are plausible source regions for Martian meteorites.

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