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Geological and structural development of the Tibetan Plateau

Research Project

Project/Area Number 63041067
Research Category

Grant-in-Aid for Overseas Scientific Survey.

Allocation TypeSingle-year Grants
SectionField Research
Research InstitutionNAGOYA University

Principal Investigator

SUWA Kanenori  School of Science, Nagoya University, Professor, 理学部, 教授 (70022564)

Co-Investigator(Kenkyū-buntansha) LIU Chaoji  Chengdu Institute of Geology and Mineral Resources, Associate Professor, 成都地質砿産研究所, 助教授
賀 節明  中国地質科学院, 成都地質砿産研究所, 教授
ENAMI Masaki  School of Science, Nagoya University, Assistant Professor, 理学部, 助手 (20168793)
KOMATSU Masayuki  Faculty of Science, Ehime University, Professor, 理学部, 教授 (00018665)
YANAGI Takeru  Faculty of Science, Kyushu University, Professor, 理学部, 教授 (90037234)
HE Jieming  Chengdu Institute of Geology and Mineral Resources, Professor
Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥17,300,000 (Direct Cost: ¥17,300,000)
Fiscal Year 1989: ¥6,300,000 (Direct Cost: ¥6,300,000)
Fiscal Year 1988: ¥11,000,000 (Direct Cost: ¥11,000,000)
KeywordsTibetan Plateau / suture zone / granitic rocks / terrane / ophiolite / eclogite
Research Abstract

1. Granitic rocks in the Lhasa-Naqu terrane in the Tibetan Plateau are divided mainly into the magnetite series of Late Cretaceous-Palaeogene, and the ilmenite series of Early Cretaceous and Miocene. The granitic rocks of the magnetite series consist of granodiorite and granite with low ^<87>Sr/^<86>Sr initial value, and are distributed in souther part of the Lhasa-Naou terrane. Those of the Cretaceous ilmenite series are mainly composed of leucocratic granite with high ^<87>Sr/^<86>Sr initial value, and are distributed in northern part. The granitic rocks of the Miocene ilmenite series are intruded into the central part of the terrane. The granitic rocks of the magnetite and ilmenite series were formed at arc-continental margin system and collision zone, respectively.
2. The Lhasa-Naqu terrane is structurally divided into northern and southern parts. The northern part, which consists mainly of basement metamorphic rocks and Jurassic system, is characterized by the prevalence of thrusts. Nappe of ophiolite sequence overlies the Jurassic system. The southern part is characterized by the prevalence of folded structures. The Lhasa-Naqu terrane belongs to Gondwana system.
3. High-pressure eclogites in the suture zone between the Sino-Korean and Yangtze cratons occur as isolated lenses or blocks in gneissic rocks (type I), serpentinized peridotites (type II) and marbles (type III). Type I eclogites were formed by high-pressure prograde metamorphism of P > 28 kbar. Type II eclogites are divided into prograde eclogites and mantle derived eclogites. Type III eclogites are similar to grospydite reported from kimberlites. Temperatures of the eclogite facies and retrograde stages tend to increase from west to east within the suture zone, suggesting that eclogites in the eastern part were derived from deeper position than those in the western part.

Report

(1 results)
  • 1989 Final Research Report Summary
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 諏訪兼位: "チベットのマニ石" 名古屋大学古川総合研究資料館報告. 5号. 85-95 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 榎並正樹: "中国に産するコ-サイトを含むエクロジャイト" 名古屋大学古川総合研究資料館報告. 5号. 117-127 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Enami,Masaki: "Quartz pseudomorphs after coesite in eclogites from Shandong province,east China" American Mineralogist. 75. 381-386 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Enami,Masaki: "High-pressure eclogites in northern Jiangsu-southern Shandong province,east China" J.Metamorphic Geol.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Takahashi,Masaki: "Vertically zoned and unzoned granitic plutons" Bull.Univ.Museum,Univ.of Tokyo.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yanagi,Takeru: "Accurate determination of isotopic composition and concentration of a strotonntium spike solution for geochronology" Mass Spectroscopy.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] SUWA, Kanenori: "Manistone of Tibet" Bull. Nagoya Univ. Furukawa Museum. No.5. 85-95 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] ENAMI, Masaki: "Coesite-bearing eclogites in China" Bull. Nagoya Univ. Furukawa Museum. No.5. 117-127 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] ENAMI, Masaki: "Quartz pseudomorphs after coesite in eclogites from Shandong province, east China" American Mineralogist. 75. 381-386 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] ENAMI, Masaki: "High-pressure eclogites in northern Jiangsusouthern Shandong province, east China" J. Metamorphic Geol.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] TAKAHASHI, Masaki: "Vertically zoned and unzoned granitic plutons" Bull. Univ. Museum, Univ. of Tokyo.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] YANAGI, Takeru: "Accurate determination of isotopic composition and concentration of a strotonntium spike solution for geochronology" Mass Spectroscopy.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary

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Published: 1988-04-01   Modified: 2016-04-21  

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