Two-stage development of the lunar farside highlands crustal formation

Keiko Yamamoto, Junichi Haruyama, Shingo Kobayashi, Makiko Ohtake, Takahiro Iwata, Yoshiaki Ishihara, Nobuyuki Hasebe

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    The correlation between the spatial patterns of surface Thorium (Th) abundance measured by SELENE GRS data and the crustal thickness from the GRAIL gravity field and LRO LOLA data is investigated in the lunar highland area. Our analysis reveals that there are several areas of local minima for Th abundance exhibiting similar values but different crustal thicknesses. To explain the result, we propose a two-stage scenario for crustal formation. In the first stage, plural thin plateaus form on the surface of the lunar magma ocean (LMO), which corresponds to the observed surface Th distribution. In the second stage, a global crust with dichotomy forms by solidification of the LMO under the plateaus.

    Original languageEnglish
    Pages (from-to)43-47
    Number of pages5
    JournalPlanetary and Space Science
    Volume120
    DOIs
    Publication statusPublished - 2016 Jan 1

    Keywords

    • GRAIL
    • Lunar crustal formation
    • Lunar crustal thickness
    • SELENE
    • Thorium abundance

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics

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  • Cite this

    Yamamoto, K., Haruyama, J., Kobayashi, S., Ohtake, M., Iwata, T., Ishihara, Y., & Hasebe, N. (2016). Two-stage development of the lunar farside highlands crustal formation. Planetary and Space Science, 120, 43-47. https://doi.org/10.1016/j.pss.2015.11.002