論文

査読有り
2019年12月

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

SCIENTIFIC REPORTS
  • Ryuki Hyodo
  • ,
  • Kosuke Kurosawa
  • ,
  • Hidenori Genda
  • ,
  • Tomohiro Usui
  • ,
  • Kazuhisa Fujita

9
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1038/s41598-019-56139-x
出版者・発行元
NATURE PUBLISHING GROUP

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.


リンク情報
DOI
https://doi.org/10.1038/s41598-019-56139-x
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000508958000007&DestApp=WOS_CPL
ID情報
  • DOI : 10.1038/s41598-019-56139-x
  • ISSN : 2045-2322
  • Web of Science ID : WOS:000508958000007

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