Transport of impact ejecta from Mars to its moons as a means to reveal Martian history.

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ID: 72680
2019
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Abstract
Throughout the history of the solar system, Mars has experienced continuous asteroidal impacts. These impacts have produced impact-generated Mars ejecta, and a fraction of this debris is delivered to Earth as Martian meteorites. Another fraction of the ejecta is delivered to the moons of Mars, Phobos and Deimos. Here, we studied the amount and condition of recent delivery of impact ejecta from Mars to its moons. Using state-of-the-art numerical approaches, we report, for the first time, that materials delivered from Mars to its moons are physically and chemically different from the Martian meteorites, which are all igneous rocks with a limited range of ages. We show that Mars ejecta mixed in the regolith of its moons potentially covers all its geological eras and consists of all types of rocks, from sedimentary to igneous. A Martian moons sample-return mission will bring such materials back to Earth, and the samples will provide a wealth of "time-resolved" geochemical information about the evolution of Martian surface environments.
Reference Key
hyodo2019transportscientific Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Hyodo, Ryuki;Kurosawa, Kosuke;Genda, Hidenori;Usui, Tomohiro;Fujita, Kazuhisa;
Journal Scientific reports
Year 2019
DOI
10.1038/s41598-019-56139-x
URL
Keywords
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