The leading, but contentious, model for lunar impact history includes a pronounced increase in impact events at around 3.9 Ga. This late heavy bombardment would have scarred Mars and the terrestrial planets, influenced the course of biologic evolution on the early Earth, and rearranged the very architecture of our Solar System. But what if it's not true? In the last decade, new observations and sample analyses have reinterpreted basin ages and "pulled the pin" on the cataclysm - we may only have the age of one large basin (Imbrium). The Curie mission would constrain the onset of the cataclysm by determining the age of a major pre-Imbrium lunar basin (Nectaris or Crisium), characterize new lunar lithologies far from the Apollo and Luna landing sites, including the basalts in the basin-filling maria and olivine-rich lithologies in the basin margins, and provide a unique vantage point to assess volatiles in the lunar regolith from dawn to dusk.


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    Titel :

    Constraining Solar System Bombardment Using In Situ Radiometric Dating


    Beteiligte:
    Cohen, Barbara A. (Autor:in) / Petro, N. E. (Autor:in) / Lawrence, S.J. (Autor:in) / Clegg, S.J. (Autor:in) / Denevi, B.W. (Autor:in) / Dyar, M. E. (Autor:in) / Elardo, S. M. (Autor:in) / Grinspoon, D. H. (Autor:in) / Hiesinger, H. (Autor:in) / Jolliff, B. L. (Autor:in)

    Kongress:

    Lunar and Planetary Science Conference ; 2018 ; The Woodlands, TX, United States


    Erscheinungsdatum :

    2018-03-19


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch




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