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Petrology of tremolite rocks in the high-pressure metamorphic terranes

Research Project

Project/Area Number 14540452
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionOsaka Prefecture University

Principal Investigator

MAEKAWA Hirokazu  Osaka Prefecture University, College of Integrated Arts and Sciences, Professor, 総合科学部, 教授 (50173696)

Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2003: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2002: ¥2,200,000 (Direct Cost: ¥2,200,000)
Keywordsserpentinite / perigdotite / high-pressure belt / tremolite / metasomatism / Mariana / serpentinite zeamount / 蛇紋岩海山 / 高圧変成帯
Research Abstract

The Franciscan Complex, California, and the Kamuikotan metamorphic belt, Japan, are accompanied by serpentinite melange with deeper high-grade metamorphic rocks, whereas the Sanbagawa metamorphic belt, Japan, contains less amounts of serpentinite and is not accompanied by any serpentinite melange. The former were probably formed under a tensional stress regime, and the latter under a compressional one. The restricted occurrence of serpentinite to the high-grade pelitic schist in the Sanbagawa belt suggests that the serpentinites had been supplied from wedge mantle into pelagic sediments on the top of subducting plate at the initiation of accretion. Tremolite rocks and phengite-chlorite schists near serpentinite in the Sanbagawa belt and from Chamorro Seamount, Mariana forearc, may suggest the widespread metasomatism along the boundary between wedge mantle serpentinite and pelagic sediments. Further research on the mechanical and physico-chemical behaviors of these metasomatic rocks are important to understand the phenomena along the subduction boundary between oceanic and land-ward plates.

Report

(3 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Maekawa, H., Yamamoto, K., Ueno, T., Osada, Y., Nogami, N.: "Significance of serpentinites and related rocks in the high-pressure metamorphic terranes, circum-Pacific regions"International Geology Review. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 前川寛和: "プレート沈み込み帯における蛇紋岩化作用"月刊地球 号外. No.43. 67-74 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 笠原順三他20名: "地震発生と水 担当箇所 3.3 蛇紋岩ダイアピル"東京大学出版会. 392(140-151) (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Maekawa, H., Yamamoto, K., Ueno, T., Osada, Y., Nogami, N.: "1significance of serpentinites and related rocks in the high-pressure metamorphic terranes, circum-Pacific regions"International Geology Review. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Maekawa, H.: "Serpentinization in the subduction zone"Chikyu Monthly. 43. 67-74 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Maekawa, H.: "Serpentinite diapir"(Kasahara, J., Toriumi, M., Kaawmura, K.,(eds.))Role of water in Earthquake Generation (University of Tokyo Press). 140-151 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Maekawa, H., Yamamoto, K., Ueno, T., Osada, Y., Nogami, N.: "Significance of serpentinites and related rocks in the high-pressure metamorphicterranes, circum-Pacific regions"International Geology Review. (in press).

    • Related Report
      2003 Annual Research Report
  • [Publications] 前川寛和: "プレート沈み込み帯における蛇紋岩化作用"月刊地球号外. No.43. 67-74 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 笠原順三他20名: "地震発生と水 担当箇所3.3蛇紋岩ダイアピルp.140-151."東京大学出版会. 392 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 笠原順三他20名: "『地震発生と水』 担当箇所 3.3 蛇紋岩ダイアピル p.140-151"東京大学出版会. 392 (2003)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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