Magmatic tempo of Earth’s youngest exposed plutons as revealed by detrital zircon U-Pb geochronology
Identifieur interne : 000002 ( Main/Exploration ); précédent : 000001; suivant : 000003Magmatic tempo of Earth’s youngest exposed plutons as revealed by detrital zircon U-Pb geochronology
Auteurs : Hisatoshi Ito [Japon] ; Christopher J. Spencer ; Martin Danišík ; Carl W. Hoiland [États-Unis]Source :
- Scientific Reports [ 2045-2322 ] ; 2017.
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.
Url:
DOI: 10.1038/s41598-017-12790-w
PubMed: 28963475
PubMed Central: 5622053
Affiliations:
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Spencer</name><affiliation><nlm:aff id="Aff2"><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 0375 4078</institution-id><institution-id institution-id-type="GRID">grid.1032.0</institution-id><institution>Earth Dynamics Research Group, Department of Applied Geology, The Institute of Geoscience Research (TIGeR), Curtin University,</institution></institution-wrap>Perth, WA 6845 Australia</nlm:aff><wicri:noCountry code="subfield">WA 6845 Australia</wicri:noCountry></affiliation></author><author><name sortKey="Danisik, Martin" sort="Danisik, Martin" uniqKey="Danisik M" first="Martin" last="Danišík">Martin Danišík</name><affiliation><nlm:aff id="Aff3"><institution-wrap><institution-id institution-id-type="ISNI">0000 0004 0375 4078</institution-id><institution-id institution-id-type="GRID">grid.1032.0</institution-id><institution>John de Laeter Centre, Department of Applied Geology, The Institute of Geoscience Research (TIGeR), Curtin University,</institution></institution-wrap>Perth, WA 6845 Australia</nlm:aff><wicri:noCountry code="subfield">WA 6845 Australia</wicri:noCountry></affiliation></author><author><name sortKey="Hoiland, Carl W" sort="Hoiland, Carl W" uniqKey="Hoiland C" first="Carl W." last="Hoiland">Carl W. Hoiland</name><affiliation wicri:level="2"><nlm:aff id="Aff4"><institution-wrap><institution-id institution-id-type="ISNI">0000000419368956</institution-id><institution-id institution-id-type="GRID">grid.168010.e</institution-id><institution>Department of Geological Sciences,</institution><institution>Stanford University,</institution></institution-wrap>Stanford, CA 94305 USA</nlm:aff><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Stanford</wicri:cityArea></affiliation></author></analytic><series><title level="j">Scientific Reports</title><idno type="eISSN">2045-2322</idno><imprint><date when="2017">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p id="Par1">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.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Trail, D" uniqKey="Trail D">D Trail</name></author><author><name sortKey="Mojzsis, Sj" uniqKey="Mojzsis S">SJ Mojzsis</name></author><author><name sortKey="Harrison, Tm" uniqKey="Harrison T">TM Harrison</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Cocherie, A" uniqKey="Cocherie A">A Cocherie</name></author><author><name sortKey="Fanning, Cm" uniqKey="Fanning C">CM Fanning</name></author><author><name sortKey="Jezequel, P" uniqKey="Jezequel P">P Jezequel</name></author><author><name sortKey="Robert, M" uniqKey="Robert M">M Robert</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Ito, H" uniqKey="Ito H">H 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Spencer</name></noCountry><country name="Japon"><noRegion><name sortKey="Ito, Hisatoshi" sort="Ito, Hisatoshi" uniqKey="Ito H" first="Hisatoshi" last="Ito">Hisatoshi Ito</name></noRegion></country><country name="États-Unis"><region name="Californie"><name sortKey="Hoiland, Carl W" sort="Hoiland, Carl W" uniqKey="Hoiland C" first="Carl W." last="Hoiland">Carl W. Hoiland</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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