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Geological studies of the greenstones in the northern Hidaka Zone

Research Project

Project/Area Number 02640595
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 地質学一般
Research InstitutionNiigata University

Principal Investigator

MIYASHITA Sumio  Niigata Univ., Faculty of Science, Associate Professor, 理学部, 助教授 (60200169)

Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1992: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1991: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1990: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywordsophiolite / Hidaka zone / Shimokawa complex / Hokkaido / ocean ridge / オフィオラィト / 緑色岩 / 四万十帯 / 海嶺玄武岩
Research Abstract

The results obtained from this research project are summarized as follows. 1) Geological and petrological studies on the Shimokawa, and Rurochi greenstone complexes of the northern Hidaka zone, the greenstones from the Makimine and Mugi Formations reveal that these greenstones are accompanied with no pelagic sediments such as chert and limestone, and extruded upon or intruded into terrigenous clastic sediments. 2) Geochemical signatures of these greenstones in terms of major and minor element chemistries exhibit that these greenstones are comparable with typical mid-ocean ridge basalts (N-MORB) and apparently different from island arc basalts. 3) Mineral chemistries of these greenstones are also similar with those of N-MORB and distinctive from those of island arc basalts and oceanic island basalts. Chemical zonings of plagioclases and clinopyroxenes of the greenstones indicate magmatic processes such as magma mixing and abrupt change of physical conditions during the crystallization of these greenstones. 4) On the basis of these lines of evidence, the greenstones are regarded to be extruded upon or intruded into unsolidified terrigenous sediments due to the collision of ocean ridge with trench.

Report

(4 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] 君波 和雄: "上部白亜系四万十累層群槙峰層(九州)中の緑色岩の産状と化学組織" 地質学雑誌. 98. 391-400 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 君波 和雄: "上部白亜系牟岐累層(四国東部)中のin situ緑色岩類の産状とその意義" 地質学雑誌. 98. 867-883 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] KIMURA、G: "A deep section of accretionary complex in Sakhalin I sland,morthwest Pacibec margin" Island Arc. 1. 166-175 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 宮下 純夫: "下川オフィオライトにおける鉱物の類帯構造に関する予察的研究" 新潟大理研究報告. 7. 85-101 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] MIYASHITA,S: "Geology and bulkchemistloy of the Shimokawa Ophiote:ophiolite possibley generatecl nearR-T-T triple junction" Proc.29thIntenational.Geol.Cong. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kazuo Kiminami: "Occurrence and geochemistry of greenstones from the Makimine Formation in the Upper Cretaceous Shimanto Supergroup in Kyushu, Japan." Jour Geol. Soc. Japan. 98, 5. 391-400 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kazuo Kiminami: "Occurrence and significance of in-situ greenstones from the Mugi Formation in the Upper Cretaceous Shimanto Supergroup, eastern Shikoku, Japan" Jour Geol. Soc. Japan. 98, 9. 867-883 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Gaku Kimura: "A deep section of accretionary complex in Sakhalin Island, northwest Pacific margin" Island Arc. 1. 166-175 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Sumio Miyashita: "A preliminary study on the zonings of plagioclase and clinopyroxene from the Shimokawa ophiolite, northern Hidaka zone, Hokkaido" Contrib. Dept. Geol. Min., Niigata Univ.7. 85-101 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Sumio Miyashita: "Geology and bulk chemistry of the Shimokawa ophiolite: ophiolite possibly generated near R-T-T triple junction" Proc. 29th IGC. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 君波 和雄: "上部白亜系四万十累層群槙峰層(九州)中の緑色岩の産状と化学組成" 地質学雑誌. 98. 391-400 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 君波 和雄: "上部白亜系牟岐累層(四国東部)中のin situ緑色岩類の産状とその意義" 地質学雑誌. 98. 867-883 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Kimura,G.: "A deep section of accretionary complex in Sakhalin Island,northwest Pacific margin" Island Arc. 1. 166-175 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 宮下 純夫: "下川オフィオライトにおける鉱物の累帯構造に関する予察的研究" 新潟大理研究報告. 7. 85-101 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Miyashita,S.: "Geology and bulkchemistry of the Shimokawa Ophiolite:ophiolite possibly generated near R-T-T triple junction" Proc.29th International Geol Cong.(1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 君波 和雄: "上部白亜系牟岐累層中のinーsitu緑色岩類の産状とその意義" 地質学雑誌. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 宮下 純夫: "下川オフォオラィトにおける鉱物の累帯構造に関する予察的研究" 新潟大学理学部地鉱教室研究報告. 6. 85-101 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 田中 久雄: "ソ連カムチャッカ半島東北部オリュ-トル地域の深成岩類" 岩鉱. 87. 1-11 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Kimura,G: "A deep section of accretionary complexーSusunai complex in the island of Sakhalin,NW Pacific marginー" Island Arc.

    • Related Report
      1991 Annual Research Report
  • [Publications] 君波 和雄: "日高累層群中からの古第三紀放散虫化石の発見とその意義:特に海嶺の沈み込みについて" 地質学雑誌. 96. 323-326 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 宮下 純夫: "日高帯の大構造:左横ずれ・右横ずれ変動帯" 月刊地球. 12. 515-520 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 君波 和雄: "日本列島に沿うクラ-太平洋海嶺の移動:その地質学的意義" 月刊地球. 12. 507-515 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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