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    Magmatic tempo of Earth's youngest exposed plutons as revealed by detrital zircon U-Pb geochronology.

    Access Status
    Open access via publisher
    Authors
    Ito, H.
    Spencer, Christopher
    Danišík, M.
    Hoiland, C.
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Ito, H. and Spencer, C. and Danišík, M. and Hoiland, C. 2017. Magmatic tempo of Earth's youngest exposed plutons as revealed by detrital zircon U-Pb geochronology.. Scientific Reports. 7 (1).
    Source Title
    Scientific Reports
    DOI
    10.1038/s41598-017-12790-w
    ISSN
    2045-2322
    School
    Department of Applied Geology
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP160102427
    URI
    http://hdl.handle.net/20.500.11937/57206
    Collection
    • Curtin Research Publications
    Abstract

    Plutons are formed by protracted crystallization of magma bodies several kilometers deep within the crust. The temporal frequency (i.e. episodicity or 'tempo') of pluton formation is often poorly constrained as timescales of pluton formation are largely variable and may be difficult to resolve by traditional dating methods. The Hida Mountain Range of central Japan hosts the youngest exposed plutons on Earth and provides a unique opportunity to assess the temporal and spatial characteristics of pluton emplacement at high temporal resolution. Here we apply U-Pb geochronology to zircon from the Quaternary Kurobegawa Granite and Takidani Granodiorite in the Hida Mountain Range, and from modern river sediments whose fluvial catchments include these plutons in order to reconstruct their formation. The U-Pb data demonstrate that the Kurobegawa pluton experienced two magmatic pulses at ~2.3?Ma and ~0.9?Ma; whereas, to the south, the Takidani pluton experienced only one magmatic pulse at ~1.6?Ma. These data imply that each of these magmatic systems were both spatially and temporally distinct. The apparent ~0.7?Myr age gap between each of the three magmatic pulses potentially constrains the recharge duration of a single pluton within a larger arc plutonic complex.

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