Decoding the geologic framework of Japanese Islands by dating of detrital minerals in metamorphic rocks

• Project/Area Number: 18740322
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Geology
• Research Institution: National Museum of Nature and Science, Tokyo
• Principal Investigator: TSUTSUMI Yukiyasu National Museum of Nature and Science, Tokyo, 地学研究部, 研究員 (00370990)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥2,710,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥210,000); Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2007: ¥700,000 (Direct Cost: ¥700,000); Fiscal Year 2006: ¥1,100,000 (Direct Cost: ¥1,100,000)
• Keywords: 地球史 / 変成岩 / 年代 / 後背地 / ジルコン / 三郡 / 三波川 / 宇奈月 / 原岩 / 堆積年代

Research Abstract

日本列島の基盤の大部分は付加帯及びそれらが沈み込みによって変成された変成帯によって構成されており、これまで変成帯部分に対して砕屑性ジルコンの年代測定を行ってきた。その結果、三郡-蓮華帯の砕屑性ジルコンの年代構成が木山変成岩と共通することが判明した。また、三波川帯の最も若い砕屑性ジルコンが後期白亜紀を示したことから、三郡変成岩の原岩が四万十帯と時代的に同じであることが明らかになった。これらの事実を考慮すると、木山変成岩は三郡-蓮華帯のクリッペ的成分で、三波川変成帯は変成を受けた白亜紀付加体(四万十帯と同一成分)が地表に現れたものであると考えることができる。その事実を認定すれば、日本列島の形成史を大幅に単純化できる上に、多くの矛盾を解消できる可能性がある。
飛騨-隠岐帯に関しては、隠岐の準片麻岩中のジルコンを測定し、その原岩年代が原生代まで遡り、朝鮮半島の基盤岩との関連を示唆した。また、大陸衝突の痕跡と考えられる中圧変成岩を産し、朝鮮半島の沃川帯と対比されてきた宇奈月地域の変成岩の中圧変成の年代は詳しくは不明であったが、この度得られたジルコンの年代により、従来よりも遥かに狭い範囲でこの中圧変成年代を制限できる可能性を得るに至った。この結果については近く公表の予定である。

Research Products

• [Journal Article] SHRIMP U-Pb dating of detrital zircons from the Sanbagawa Belt,Kanto Mountains, Japan: need to revise the framework of the belt. (2009)
  • Author(s): Tsutsumi, Y., Miyashita, A., Terada, K. and Hidaka, H.
  • Journal Title: Journal of Mineralogical and Petrological Sciences 104 Pages: 12-24
  • NAID: 10024023576
• [Journal Article] SHRIMP U-Pb dating of detrital zircons from the Sanbagawa Belt, Kanto Mountains, Japan : need to revice the framework of the belt (2009)
  • Author(s): Tsutsumi, Y., Miyashita, A., Terada, K. and Hidaka, H.
  • Journal Title: Journal of Mineralogical and Petrological Sciences 104 Pages: 12-24
  • Peer Reviewed
• [Journal Article] Ion microprobe U-Pb dating of zircon with a 15 micrometer spatial resolution using NanoSIMS. (2008)
  • Author(s): Takahata, N., Tsutsumi, Y. and Sano, Y.
  • Journal Title: Gondwana Research 14 Pages: 587-596
• [Journal Article] Electron microprobe dating of monazites from an ultrahigh-temperature granulite in Southern India : Implications for the timing of Gondwana assembly (2008)
  • Author(s): Santosh, M., Yokoyama, M., Tsutsumi, Y. and Yoshikura, S.
  • Journal Title: Journal of Mineralogical and Petrological Sciences 103 Pages: 77-87
  • NAID: 10020736965
  • Peer Reviewed
• [Journal Article] Study of Zn-bearing beaverite Pb(Fe2Zn)(SO4)2(OH)6 obtained from mikawa mine, Niigata Prefecture, Japan (2008)
  • Author(s): Sato, E., Nakai, I., Terada, Y., Tsutsumi, Y., Yokoyama, K., Miyawaki, R. and Matsubara, S.
  • Journal Title: Journal of Mineralogical and Pertological Sciences 103 Pages: 141-144
  • Peer Reviewed
• [Journal Article] Reconnaissance study of monazite age from Southeast Asia (2008)
  • Author(s): Yokoyama, K. and Tsutsumi, Y.
  • Journal Title: Memoirs of National Museumof Nature and Science 45 Pages: 139-148
  • Peer Reviewed
• [Journal Article] Reconnaissance study of monazite age from Southeast Asia. (2007)
  • Author(s): Yokoyama, K. and Tsutsumi, Y.
  • Journal Title: Memoirs of National Museum of Nature and Science 45 Pages: 139-148
• [Journal Article] Provenance study of Tertiary sandstones from the Western Foothills and Hsuehshan Range, Taiwan. (2007)
  • Author(s): Yokoyama, K., Tsutsumi, Y., Lee, C.-S., Shen J.J.-S., Lan, C.-Y. and Zhao, L.
  • Journal Title: Bulletin of National Museum of Nature and Science, Ser. C 33 Pages: 7-26
  • NAID: 110007342086
• [Journal Article] Provenance study of Tertiary sandstones from the Western Foothills and Hsuehshan Range,Taiwan (2007)
  • Author(s): Yokoyama, K., Tsutsumi, Y., Lee, C.-S., Shen.J.J.-S., Lan, C.-Y.and Zhao, L.
  • Journal Title: Bulletin of National Museum of Nature and Science, Ser.C 33 Pages: 7-26
  • NAID: 110007342086
  • Peer Reviewed
• [Journal Article] Ion microprobe U-Pb dating of monazite with about five micrometer spatial resolution. (2006)
  • Author(s): Sano, Y., Takahata, N., Tsutsumi, Y., and Miyamoto, T.
  • Journal Title: Geochemical Journal 40 Pages: 597-608
  • NAID: 10018466969
• [Journal Article] SHRIMP U-Pb dating of detrital zircons in paragneisses from Oki-Dogo Island, western Japan. (2006)
  • Author(s): Tsutsumi, Y., Yokoyma, K., Horie, H., Terada, K. and Hidaka, H.
  • Journal Title: Journal of Mineralogical and Petrological Sciences 101 Pages: 289-298
  • NAID: 130000254251
• [Journal Article] SHRIMP U-Pb dating of detrital zircons in paragneisses from Oki-Dogo Island, western Japan (2006)
  • Author(s): Tsutsumi, Y., Yokoyma, K., Horie, H., Terada, K., Hidaka, H.
  • Journal Title: Journal of Mineralogical and Petrological Sciences 101 Pages: 289-298
  • NAID: 130000254251
• [Journal Article] Ion microprobe U-Pb dating of monazite with about five micrometer spatial resolution (2006)
  • Author(s): Sano, Y., Takahata, N., Tsutsumi, Y., Miyamoto, T.
  • Journal Title: Geochemical Journal 40 Pages: 597-608
  • NAID: 10018466969
• [Journal Article] The timing of ultrahigh-temperature metamorphism in Southern India : U-Th-Pb electron microprobe ages from zircon and monazite in sapphirine-bearing granulites (2006)
  • Author(s): Santosh, M., Collins, A.S., Tamashiro I., Koshimoto, S., Tsutsumi, Y., Yokoyama K.
  • Journal Title: Gondwana Research 10 Pages: 128-155
• [Journal Article] Ion microprobe U-Pb dating of zircon with a 15 micrometer spatial resolution using NanoSIMS
  • Author(s): Takahata, N., Tsutsumi, Y. and Sano, Y.
  • Journal Title: Gondwana Research (印刷中)
  • Peer Reviewed
• [Presentation] The Sangun-Renge belt : one of the oldest metamorphic in Japan (2008)
  • Author(s): Tsutsumi, Y., Yokoyama, K., Terada, K. and Hidaka, H.
  • Organizer: 5th Annual general meetingof Asia Oceania Geoscience Society
  • Place of Presentation: Busan
  • Year and Date: 2008-06-18
• [Presentation] The Sangun-Renge belt: one of the oldest metamorphic belts in Japan. (2008)
  • Author(s): Tsutsumi, Y., Yokoyama, K., Terada, K. and Hidaka, H.
  • Organizer: 5th Annual general meeting of Asia Oceania Geoscience Society, SE62-A005
• [Presentation] Geochronological Relationship of Basement Rock between Ogcheon Belt and Unazuki Belt: Interpretation of Inherited Zircon. (2008)
  • Author(s): Horie, K., Tsutsumi, Y., Hayasaka, Y., Kim, H., Cho, M. and Hidaka, H.
  • Organizer: 5th Annual general meeting of Asia Oceania Geoscience Society, SE62-A010
• [Presentation] 関東山地・三波川帯の砕屑性ジルコン年代:三波川帯の原岩は秩父帯起源か (2007)
  • Author(s): 堤之 恭・宮下 敦・日高 洋
  • Organizer: 日本岩石鉱物鉱床学会2007年度学術講演会
  • Place of Presentation: 東京大学
  • Year and Date: 2007-09-23
• [Presentation] 関東山地・三波川帯の砕屑性ジルコン年代:三波川帯の原岩は秩父帯起源か? (2007)
  • Author(s): 堤之恭・宮下敦・日高洋
  • Organizer: 日本岩石鉱物鉱床学会2007年度学術講演会,G4-12
• [Presentation] Ion microprobe U-Pb dating of zircons in jadeitites and jadeite-bearing rocks from Japan (2006)
  • Author(s): Tsutsumi, Y., Yokoyama, K., Miyawaki, R., Matsubara, S. and Hidaka, H.
  • Organizer: 19th General meeting of the International Mineralogical Association, P35-3
• [Remarks]
  • URL: http://www.kahaku,go.jp/research/researcher/researcher.php?d=vtsutsu