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Neoproterozoic to Early Palaeozoic continental collision and breakup tectonics in the Sor Rondane Mountains and the Lutzow-Holm Bay area, East Antarctica

Research Project

Project/Area Number 25400483
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Geology
Research InstitutionNiigata University

Principal Investigator

Toyoshima Tsuyoshi  新潟大学, 自然科学系, 教授 (10227655)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2015: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords東南極 / ゴンドワナ超大陸 / リュツォホルム岩体 / セールロンダーネ山地 / 大陸衝突 / 断層 / 褶曲 / 大構造 / 大陸衝突帯 / 圧縮テクトニクス / 引張テクトニクス / スリランカ / マイロナイト化作用
Outline of Final Research Achievements

In this paper we clarify the history of deformation in the Sor Rondane Mountains (SRMs) and the Lutzow-Holm Complex (LHC), East Antarctica, and construct their form-line contour maps and cross sections of the metamorphic and plutonic rocks in order to comprehend their structural features and provide constraints on the collisional tectonics of East and West Gondwana.
Geological features of the SRMs resulted from collisional metamorphism and deformation (640-600 Ma), through crustal thinning, horizontal extension or compression after 600 Ma, sinistral transpression (600-560 Ma), to horizontal extension related to dextral shearing (560-550 Ma) in the East African and Antarctic Orogen (EAAO).
The LHC is not uniform and includes several types of metamorphic units or fragments of the Latest Proterozoic to Early Paleozoic crust that were formed through distinct P-T-t evolutionary processes and divided by several faults. The LHC may have been situated in a different orogen from the EAAO.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (13 results)

All 2015 2014 2013

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (9 results)

  • [Journal Article] Upright folds and folded boudins resulting from continental collision of East and West Gondwana2015

    • Author(s)
      Toyoshima, T., Owada, M. and Shiraishi, K.
    • Journal Title

      Atlas of Structural Geology

      Volume: 1 Pages: 1-1

    • DOI

      10.1016/b978-0-12-420152-1.00001-6

    • ISBN
      9780124201521
    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fault veins and injection veins of dark-colored pseudotachylyte derived from frictional melting and seismic faulting under granulite-facies conditions2015

    • Author(s)
      Toyoshima, T., Osanai, Y., Owada, M., Tsunogae, T. and Hokada, T.
    • Journal Title

      Atlas of Structural Geology

      Volume: 1 Pages: 146-146

    • DOI

      10.1016/b978-0-12-420152-1.00006-5

    • ISBN
      9780124201521
    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sinistral transpressional and extensional tectonics in Dronning Maud Land, East Antarctica, including the Sor Rondane Mountains2013

    • Author(s)
      Toyoshima, T., Y. Osanai, S. Baba, T. Hokada, N. Nakano, T. Adachi, M. Otsubo, M. Ishikawa, and Y. Nogi
    • Journal Title

      Precambrian Res.

      Volume: 234 Pages: 30-46

    • DOI

      10.1016/j.precamres.2013.05.010

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Geologic evolution of the Sør Rondane Mountains, East Antarctica : Collision tectonics proposed based on metamorphic processes and magnetic anomalies2013

    • Author(s)
      Osanai, Y., Nogi, Y., Baba, S., Nakano, N., Adachi, T., Hokada, T., Toyoshima, T., Owada, M., Satish-Kumar, M., Kamei, A., and Kitano, I
    • Journal Title

      Precambrian Research

      Volume: 234 Pages: 8-29

    • DOI

      10.1016/j.precamres.2013.05.017

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Megascopic geological structures of the Lützow-Holm Complex, East Antarctica2015

    • Author(s)
      Tsuyoshi Toyoshima
    • Organizer
      The Sixth Symposium on Polar Science
    • Place of Presentation
      国立極地研究所(東京都・立川市)
    • Year and Date
      2015-11-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] 日高変成帯南端部上歌別川地域における変成岩類・トーナル岩に関する構造地質学的研究2015

    • Author(s)
      櫻井宏信・豊島剛志
    • Organizer
      日本地質学会第122年学術大会
    • Place of Presentation
      信州大学長野キャンパス(長野県・長野市)
    • Year and Date
      2015-09-12
    • Related Report
      2015 Annual Research Report
  • [Presentation] 北海道日高変成帯・東南極ナピア岩体の上部・下部地殻岩石における化石震源域のシュードタキライトと間震期の塑性変形2015

    • Author(s)
      豊島剛志
    • Organizer
      日本地球惑星科学連合2015年度連合大会
    • Place of Presentation
      幕張メッセ(千葉県・千葉市)
    • Year and Date
      2015-05-27
    • Related Report
      2015 Annual Research Report
  • [Presentation] リュッツォホルム岩体の大構造2014

    • Author(s)
      豊島剛志
    • Organizer
      第81回西日本東南極セミナー
    • Place of Presentation
      乗鞍高原BELL鈴蘭小屋(長野県松本市)
    • Year and Date
      2014-06-28 – 2014-06-29
    • Related Report
      2014 Research-status Report
  • [Presentation] 東南極セールロンダーネ山地における正断層センスを示すマイロナイト形成時およびその前後のテクトニクス2014

    • Author(s)
      豊島剛志:金谷亮子・小山内康人・馬場壮太郎・外田智千・中野伸彦・足立達朗
    • Organizer
      地球惑星科学連合2014年大会
    • Place of Presentation
      パシィフィコ横浜(神奈川県横浜市)
    • Year and Date
      2014-04-28 – 2014-05-02
    • Related Report
      2014 Research-status Report
  • [Presentation] 変堆積岩中のグラファイトを含むシュードタキライト: グラファイトの酸化によるCO2脱離の示唆2014

    • Author(s)
      中村 佳博,Madhusoodhan Satish-Kumar,豊島 剛志
    • Organizer
      地球惑星科学連合2014年大会
    • Place of Presentation
      パシィフィコ横浜(神奈川県横浜市)
    • Year and Date
      2014-04-28 – 2014-05-02
    • Related Report
      2014 Research-status Report
  • [Presentation] 東南極セールロンダーネ山地における左ずれトランスプレッション前後の引張テクトニクス2013

    • Author(s)
      豊島剛志・小山内康人・馬場壮太郎・外田智千・中野伸彦・足立達朗・大坪 誠・石川正弘・野木義人
    • Organizer
      日本地質学会
    • Place of Presentation
      東北大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 東南極セールロンダーネ山地における左ずれトランスプレッションによる褶曲形成前後のテクトニクス2013

    • Author(s)
      豊島剛志・小山内康人・馬場壮太郎・外田智千・中野伸彦・足立達朗
    • Organizer
      国立極地研究所第4回極域科学シンポジウム
    • Place of Presentation
      国立極地研究所(東京都立川市)
    • Related Report
      2013 Research-status Report
  • [Presentation] 形態線図から見たリュッツォホルム岩体の大構造2013

    • Author(s)
      豊島剛志
    • Organizer
      国立極地研究所第4回極域科学シンポジウム
    • Place of Presentation
      国立極地研究所(東京都立川市)
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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