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Construction of model on the mountain building process of the collided range Himalaya

Research Project

Project/Area Number 16H04062
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Geology
Research InstitutionKyoto University

Principal Investigator

Sakai Harutaka  京都大学, 理学研究科, 名誉教授 (90183045)

Co-Investigator(Kenkyū-buntansha) 平田 岳史  東京大学, 大学院理学系研究科(理学部), 教授 (10251612)
佐藤 活志  京都大学, 理学研究科, 助教 (70509942)
Research Collaborator YOSHIDA Kohki  
KAWAKAMI Tetsuo  
SATO Katsushi  
SHINJO Ryuichi  
MORI Yasushi  
Pitambar Gautam  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2017: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2016: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Keywords衝突山脈 / ヒマラヤ山脈 / 変成岩 / ナップ / フィッション・トラック年代 / U-Pb年代 / ジルコン / レッサーヒマラヤ / ヒマラヤ / フィッション・トラック / 熱年代学 / MCT / 大陸衝突 / フィッション・トラック年代測定 / 熱履歴 / 変成岩ナップ / フィッション・トラック法 / 造山帯 / カトマンズ / エベレスト / 付加体・造山帯
Outline of Final Research Achievements

The HHC rapidly cooled downward after exposing (14.4-12Ma), and its nappe gradually cooled toward the north after termination of the emplacement (11.5-2Ma). Its emplacement rate is 3.5cm/y. The LHS beneath the hot HHC nappe had thermal imprint and also cooled toward the north at the same rate of the HHC nappe. The Tethys sediments cooled downward in proportion to structural distance from the MCT. HHC at the nappe front and underlying MCTzone have the same metamorphic phase and P/T condition (10kbar, 660℃+ & 8kbar, 600℃) of the HHC in the High Himalaya. Grantic melt was formed in the basal part of the HHC after release of H2O, CO2, B from the MCT zone by metamorphism. Depositional age of the Late Paleoproterozoic LHS was confirmed to be from 1900-1600Ma on the basis of U-Pb & Pb-Pb dating. Unconformity at 1800 Ma and provenance change at around 1700 Ma were found. Tectonic setting of igneous activity during1900-1850 Ma was estimated to be hot spot and rift system.

Academic Significance and Societal Importance of the Research Achievements

世界最大の大陸衝突型山脈、ヒマラヤの形成プロセスとその形成メカニズムを解明する鍵となる、ヒマラヤの変成岩とそれが地上を広く覆った変成岩ナップの運動と熱史を解明する目的で研究を行った。その結果、ヒマラヤ山脈の形成過程は厚さ10kmを超える変成岩が地下約40kmから上昇を始め,地表に露出後も300℃以上の温度を保持したまま、年間3.5cmの速度で120km余り南方に押し出され、約1000万年前に運動を停止し、その後北方に冷却することで形成された。またナップによってカバーされたインド亜大陸の堆積物も、ナップの上に載った堆積物もナップの熱により300℃以上に達し、その後冷却したことを明らかにした。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (24 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (16 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results)

  • [Int'l Joint Research] 国立トリブバン大学地質学教室(ネパール)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] 国立トリブバン大学地質学科(ネパール)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Dept of Geology, Tribhuvan University(Nepal)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Unconformity of ca. 1800 Ma between the Kuncha Formation of deep-water sediments and the Naudanda Formation of eolian sediments in Nepal Lesser Himalaya2019

    • Author(s)
      Kobayashi W., Sakai H., Iwano H., Danhara T., Hirata T.
    • Journal Title

      Island Arc

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Brittle fault zone along the Main Central Thrsut and its fission-track age of 11 Ma in the front of the Higher Himalayan Crystalline nappe in Dhankuta area, south eastern Nepal2019

    • Author(s)
      Sakai H.,Sato K., Iwano H.,Kuwahara Y., Kawakami T., Danhara T.
    • Journal Title

      Island Arc

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Zircon fission-track and U-Pb double dating based on laser ablation-inductively coupled plasma mass spectrometry: Methodology and some applications to Himalayan samples2019

    • Author(s)
      Iwano H., Danhara T., Danhara Y., Hirabayashi S., Nakajima T., Sakai H., Hirata T.
    • Journal Title

      Island Arc

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The inverted Barrovian metamorphic sequences and fluid-present melting in the Arun area, eastern Nepal2019

    • Author(s)
      Imayama T., Uehara S., Sakai H., Yagi K., Ikawa C., Keewook., Y.
    • Journal Title

      International Journal of Earth Science

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tectonics of the Himalayas2017

    • Author(s)
      酒井治孝、今山武志、吉田孝紀、朝日克彦
    • Journal Title

      The Journal of the Geological Society of Japan

      Volume: 123 Issue: 6 Pages: 403-421

    • DOI

      10.5575/geosoc.2017.0026

    • NAID

      130005858623

    • ISSN
      0016-7630, 1349-9963
    • Year and Date
      2017-06-15
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] Geochemical characteristics of mafic and felsic igneous rocks (1.9-1.75 Ga) in the Lesser Himalaya: Regional variation and its implications for tectonic setting2019

    • Author(s)
      新城竜一ほか5名
    • Organizer
      Japan Geoscience Union
    • Related Report
      2018 Annual Research Report
  • [Presentation] Syn-metamorphic B-bearing fluid infiltrations deduced from tourmaline in the Main Central Thrust zone, eastern Nepal Himalayas2019

    • Author(s)
      河上哲生ほか2名
    • Organizer
      Goldschmidt 2019 Conference
    • Related Report
      2018 Annual Research Report
  • [Presentation] Brine flow along large scale thrusts in continental collision zones2019

    • Author(s)
      河上哲生ほか3名
    • Organizer
      International Workshop on Water Dynamics
    • Related Report
      2018 Annual Research Report
  • [Presentation] The inverted Barrovian metamorphic sequences and fluid-present melting in the Arun area, eastern Nepal2019

    • Author(s)
      今山武志ほか4名
    • Organizer
      Goldschmidt 2019 Conference
    • Related Report
      2018 Annual Research Report
  • [Presentation] 熱年代学的研究によるヒマラヤの変成岩ナップの形成プロセス2018

    • Author(s)
      酒井治孝ほか5名
    • Organizer
      日本地質学会第125年学術大会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Thermal history of the Higher Himalayan Crystallines and underlying Lesser Himalayan sediments around Annapurna area in west-central Nepal: LA-ICP-MS zircon fission-track analyses2018

    • Author(s)
      中嶋徹 ほか5名
    • Organizer
      Himalaya-Karakoram-Tibet Workshop
    • Related Report
      2018 Annual Research Report
  • [Presentation] Northward lateral cooling history of the Himalayan metamorphic nappe and uplifting history of the Everest Massif2017

    • Author(s)
      酒井治孝・平林沙織
    • Organizer
      日本地球惑星科学連合
    • Place of Presentation
      幕張メッセ、千葉
    • Year and Date
      2017-05-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] Cooling history of eastern Nepal Higher Himalayan Crystallines and Lesser Himalayan Sediments constrained by fission-track ages of detrital zircon2017

    • Author(s)
      中嶋徹・酒井治孝
    • Organizer
      日本地球惑星科学連合
    • Place of Presentation
      幕張メッセ、千葉
    • Year and Date
      2017-05-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] Northward lateral cooling of the Himalayan metamorphic nappe and downward cooling of the Everest Massif.2017

    • Author(s)
      Harutaka Sakai, Saori Hirabayashi, Tohru Nakajima, Hideki Iwano and Tohru Danhara
    • Organizer
      Japan Geoscience Union-American Geophysical Union Joint Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cooling history of the Higher Himalayan Crystalline nappe and underlying sediments in eastern Nepal, revealed by fission-track dating of detrital zircons.2017

    • Author(s)
      Tohru Nakajima, Harutaka Sakai, Hideki Iwano and Tohru Danhara
    • Organizer
      Japan Geoscience Union-American Geophysical Union Joint Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ネパールヒマラヤの変成岩ナップのテクトニク スと被熱・冷却プロセス.2017

    • Author(s)
      酒井治孝・平林沙織・中嶋徹・岩野 英樹・檀原徹
    • Organizer
      日本地質学会124年学術大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ジルコンのフィッション・トラック年代測定によるネパールヒマラヤの変成岩ナップとその下盤・上盤の被熱・冷却プロセスの解明2017

    • Author(s)
      中嶋徹 ・酒井治孝・岩野英樹・檀原徹
    • Organizer
      日本地質学会124年学術大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 中央ネパール高ヒマラヤ片麻岩類のザクロ石に包有されるナノ花崗岩包有物.2017

    • Author(s)
      河上哲生・酒井治孝・佐藤活志
    • Organizer
      日本地質学会124年学術大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] IODP Exp. 354で採集されたベンガルファン中新統に含まれる砕屑性ザクロ石の化学組成とその時代変化2017

    • Author(s)
      吉田孝紀・大崎 愛・葉田野 希・酒井治孝
    • Organizer
      日本地質学会124年学術大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Emplacement and cooling history of the Himalayan metamorphic nappe, originated from the partially-melted middle crust of Tibet2016

    • Author(s)
      Harutaka Sakai
    • Organizer
      Nepal Geological Congress
    • Place of Presentation
      Hotel Yak & Yeti, Kathmandu
    • Year and Date
      2016-11-27
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ホットな変成岩ナップに被覆された 1.9~1.6Ga の現地性原生界の被熱と 15~2Ma の側方冷却2016

    • Author(s)
      酒井治孝
    • Organizer
      日本地質学会
    • Place of Presentation
      日本大学、東京
    • Year and Date
      2016-09-11
    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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