The youngest exposed granitoid pluton on earth : cooling and rapid uplift of the Plio-quaternary Takidani Granodiorite in the Japan Alps, central Japan, - [s.n.] 1992 Author:Satoru Harayama
論文 Establishing Genetic Relationships between the Takidani Pluton and Two Large Silicic Eruptions in the Northern Japan Alps JOURNAL OF PETROLOGY,62(12):1-23 2021 Author:Eva Hartung, Luca Caricchi, David Floess, Simon Wallis3¥, and Satoru Harayama Abstract:The Takidani pluton (1·1–1·6 Ma) represents a shallow magmatic reservoir at the base of an exhumed caldera floor. The deposits of two large caldera-forming eruptions, the Nyukawa Pyro- clastic Flow Deposit (1·76 Ma; crystal-rich dacite) and the Chayano Tuff and Ebisutoge Pyroclastic Deposits (1·75 Ma; a sequence of crystal-poor rhyolite), are distributed concentrically around the pluton. We use major and trace element chemistry of whole-rock, glass and minerals to show that (1) the crystal-rich dacite (>400 km3 DRE; dense rock equivalent) is the erupted portion of a shallow mush zone constituting the Takidani pluton and (2) the crystal-poor rhyolite (>100 km3 DRE) was extracted from a deeper part of this vertically extended magmatic plumbing system. Whole-rock geochemistry indicates that the Nyukawa and Takidani compositions were produced dominantly through crystal fractionation of amphibole, pyroxene and plagioclase in the mid to lower crust and subsequently emplaced in the upper crust prior to eruption and solidification, respectively. The crystal-poor Chayano–Ebisutoge rhyolite (>100 km3 DRE) is compositionally distinct from the Nyukawa and Takidani magmas and its generation is associated with a substantial contribution of crustal melts. However, plagioclase and orthopyroxene textures and chemistry provide strong evidence that the ascending rhyolite percolated through the upper Takidani–Nyukawa mush zone prior to eruption. Overgrowth of ‘rhyolitic plagioclase’ on ‘xenocrystic dacitic plagioclase’ typical of the Takidani–Nyukawa magmas indicates that the extraction and accumulation of the rhyolitic melts could have occurred in less than 10 kyr (i.e. the time between eruptions) prior to eruption, providing maximum timescales for pre-eruption storage. Overall, our findings show a progressive growth and thermal maturation of a vertically extended magmatic plumbing system over hundreds of thousands of years and imply that large volcanic eruptions can occur in relatively short succession without dramatic changes in the plumbing system, thus complicating the identification of signs of an impending large eruption.
Petrogenesis of the Nohi Rhyolite and related granitoids: Large Late Cretaceous silicic magma system in the Southwest Japan Arc. Jour. Volcanology and Geothermal Research,167(1-4):57-80 2007(May) Author:曽根原崇文・原山 智
Mafic enclaves floating through a vertically fractionating felsic magma chamber: The Kurobegawa Granitic Pluton, Hida Mountain Range, central Japan. Bull. Geol. Soc. Amer.,,116(7/8):788-801 2004(Aug. 07) Author:Wada ,Hajime., Harayama, Satoru and Yamaguchi, Yoshiaki .
Amphibole zoning, a record of progressiveoxidation during crystallization of mafic microgranular enclaves in the Kurobegawa GraniticPluton. Jour. Mineralogical and Petrological Sciences,98:151-155 2003(Aug.) Author:Yamaguchi, Yoshiaki , Wada ,Hajime., Ohta, Yasushi. and Harayama, Satoru.
Quaternary and Pliocene granites in the Northern Japan Alps. Hutton Symposium V, field Guidebook, TripA1, Geological Survey of Japan, Interim-Report,(28):3-21 2003(Aug.) Author:Harayama, Satoru. , Wada, Hajime. and Yamaguchi, Yoshiaki
Fission track and K-Ar dating on some granitic rocks in the Hida Mountain Range, Central Japan. Geochemical Journal,33(3):59-66 1999(Mar.) Author:山田隆二・原山 智
Youngest exposed granitoid pluton on Earth：Cooling and rapid uplift of the Pliocene-Quaternary Takidani Granodiorite in the Japan Alps, central Japan. 20, pp.657-660(1992). Geology,20(8):657-660 1992(Jul.) Author:原山 智
講演・口頭発表等 The plutonic-volcanic connection: Insights from central Japan. 14th Swiss Geoscience Meeting, Geneva 2016(Aug.) Presenter:Eva Hartung, Luca Caricchi, Davide Roggero, David Floess, Simon Wallis and Satoru Harayama
Takidani Granodiorite: Insights into a young magma chamber. Swiss Geoscience 2015(Aug. 28) Presenter:Eva Hartung, Luca Caricchi, David Floess, Simon Wallis, Satoru Harayama
Dating deep-seated catastrophic landslides in Japanese Alps by terrestrial cosmogenic10Be: an implication to the influence of climate change in shaping mountainous landscapes. cosmogenic10Be: an implication to the influence of climate change in shaping mountainous landscapes. 2015 INQUA Congress 2015(Aug. 28) Presenter:Yuki Matsushi, Yoshihiko Kariya, Satoru Harayama, Hiroyuki Matsuzaki
An AMS study of the Takidani pluton (Japan). EGU General Assembly 2016 , Vienne 2015(Apr.) Presenter:Eva Hartung , Luca Caricchi , David Floess , Simon Wallis , Satoru Harayama
High-resolution tectonic analysis for the mountain building process in the Northern Japan Alps Proceedings of Shinshu University International Symposium 2006 2006(Nov.) Presenter:原山智
Petrological features of the Nohi Rhyolite and related granitoids: genesis of a large, Late Cretaceous, silicic magma system. Japan Geoscience Union Meeting (CD-ROM), 2006, V102-P016. 2006(May) Presenter:曽根原崇文・原山 智
Emplacement, cooling and rapid denudation process for the Quaternary volcano-pluton in the Northern Japan Alps, central Japan. Open Research Center of Okayama Unversity of Science, International Symposium on Material Science and History of Earth and Sister Planets. 2006(Mar.) Presenter:原山 智・宿輪隆太・板谷徹丸
Occurrrence and chemistry of sulfide, oxide, and amphibole during oxidized mafic micrigranular enclave crystallization in the Kurobegawa Granitic Pluton. Fifth Hutton Symposium, September 1-6, 2003 2003(Sep.) Presenter:山口佳昭・和田肇・原山智・太田靖
Mafic enclaves floating through a vertically fractionating felsic magma chamber: The Kurobegawa Granitic Pluton, Hida Mountain Range, central Japan. Fifth Hutton Symposium, September 1-6, 2003 2003(Sep.) Presenter:和田肇・原山智・山口佳昭
Emplacement, cooling and rapid denudation process for the Quaternary volcano-pluton: The Hotaka Cauldron and the Takidani Granodiorite,Northern Japan Alps, central Japan. Fifth Hutton Symposium, September 1-6, 2003 2003(Sep.) Presenter:原山 智
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