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Significance of hydrocarbons in anorthite megacrysts from island arc.

Research Project

Project/Area Number 05453004
Research Category

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

Allocation TypeSingle-year Grants
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionUniversity of Tsukuba

Principal Investigator

KIMATA Mitsuyoshi  Institute of Geoseience, University of Tsukuba Assistant Professor, 地球科学系, 講師 (20143167)

Co-Investigator(Kenkyū-buntansha) ARAKAWA Yoji  Department of Geology Faculty of Education Saitama University, 教育学部, 助教授 (00192469)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 1994: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1993: ¥6,200,000 (Direct Cost: ¥6,200,000)
Keywordsanorthite / megacryst / olivine / garnet / inclusion / native copper / island arc / magma / 島孤 / 炭化水素 / Sr-同位体比
Research Abstract

Hydrocarbons, verified by high-temperature Micro-FTIR,are found to be included by the same anorthite and labradorite megacrysts containing native coppers, as described in Part 1, in basaltic rocks, from Japanese island arc and in the westem continental margin of North America, respectively. A finding of Muntz metal (Cu_<60> Zn_<40> ) within the anorthite megacryst offerred the establishment of Hume-Rothery's rule in nature. Concerning the genesis of native coppers coexistent with the hydrocarbon, the exsolution model fortified by their purity and oriented distribution has been suggested and can account for crystal growth of native coppers based on the theory of Ostwald ripening. While continental margins and lsland arcs have geological and tectonical backgrounds common to each other, remarkable difference in morphology between fractured labradorites and euhedral anorthites seems to flare up in the power of the volcanic eruption. Moreover it proved that the corroded olivines within anorthite megacrysts hereupon have also a trace amount of hydrocarbons, detection of which discloses that the magmas crystallizing these anorthite and olivines contained the same hydrocarbons. Fe/Mg ratio of the corroded olivines, Sr-content and Sr-isotope ratio of anorthite megacrysts typical of arc-volcanism in Japan afford the lateral variations from the Japan trench to the Back arc side, and their geochemical behavior witnesses the rapid crystallization of anorthite megacrysts and their corroded olivines in close association with the crust components and the slabsediments subducted beneath the island arc.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] M.Kimata: "Anorthite megacrysts from island are basalts" Mineral.Mag.59. 1-13 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] M.Kimata: "The crystal structure sanidine at 900℃" Eur.J.Mineral.(1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] M.Kimata: "Structure of sanidine-type KGaSi_3O_8:Tetrahedral-site disordering in potassium feldspar." Eur.J.Mineral.7. 287-293 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 木股三善: "自然銅と炭化水素を包有する斜長石巨晶:マグマ混合の最盛期を凍結か(2)炭化水素を包有する斜長石巨晶とその地球科学的意義" 鉱物雑. 24. 3-16 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] N.Nishida: "Native 2inc,copper,and brass in the red-clouded anorthite megacryst as probes of the are-magmatic process" Naturwissen.81. 498-502 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 木股三善: "自然銅と炭化水素を包有する斜長石巨晶:マグマ混合の最盛期を凍結か(1)斜長石の結晶科学と自然銅を包有するその巨晶" 鉱物雑. 23. 45-58 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kimata, M., Nishida, N., Shimizu, M., Saito, S.and Arakawa, Y.: "Paragenesis within anorthite megacrysts as a proxy for past changes in the basaltic arc-magma" NATO ADVANCBD STUDY INSTITUTE,Feldspars and their Reactions, Bdingburgh, UK.Poster. 5. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kimata, M.: "Crystal structure of KBSi_3O_8 isostructural with danburite." Mineral.Mag.57. 157-164 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kimata, M., Shimizu, M., Saito, S., Nishida, N.and Arakawa, Y.: "Hydrocarbons within anorthite megacrysts as a window to understaning the arc-magmatic process." N.J.Miner, Mb.H.9. 408-416 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Hawthorne, F.C., Kimata, M.and Bby, R.K.: "The crystal structure of spangolite, a complex copper sulfate sheet mineral." Amer.Mineral.78. 649-652 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Saito, S., Shimizu, M.and Kimata, M.: "High-temperature crystal structure of feldspar : I.sanidine.lnternational Mineralogical Association" 16th General Meeting, Section. 5g. (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Nishida, N., Kimata, M.and Arakawa, Y.: "Native zinc, copper, and brass in the red-clouded anorthite megacrysts as probes of the arc-magmatic process. Naturvissenschaften" 81. 498-502 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kimata, M., Nishida, N., Shimizu, M., Saito, S., Matsui, T.and Arakawa, Y.: "Anorthite megacrysts from island arc basalts.Mineral.Mag., Feldspar" volume, 59(394). 1-13 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kimata, M., Saito, S.and Shimizu, M.: "Structure of sanidine-type KGaSi_3O_8 : Tetrahedral-site disordering in potassium feldspar" Bur.J.Mineral.7. 287-293 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Shimizu, M., Kimata, M.and Iida, I.: "Crystal structure of Ba_2MgSi_2O_7 melilite : The longest tetrahedral Mg-O distance." N.Jb.Miner.Mh.1995(1). 39-47 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] M.Kimata: "Anorthite megacrysts from island arc basalts" Mineral.Mag.59. 1-13 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Kimata: "The crystal structure of sanidine at 900℃" Eur.J.Mineral.(印刷中). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Kimata: "Structure of sanidine-type KGaSi_3O_8:Tetrahedral-site disordering in potassium feldspar." Eur.J.Mineral.7. 1-7 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 木股三善: "自然銅と炭化水素を包有する斜長石巨晶:マグマ混合の最盛期を凍結か,(2)炭化水素を包有する斜長石巨晶とその地球化学的意義" 鉱物雑. 24. 3-16 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] N.Nishida: "Native zinc,copper,and brass in the red-clouded anorthite megacryst as probes of the arc-magmatic process" Naturwissen.81. 498-502 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 木股三善: "自然銅と炭化水素を包有する斜長石巨晶:マグマ混合の最盛期を凍結か,(1)斜長石の結晶化学と自然銅を包有するその巨晶" 鉱物雑. 23. 45-58 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Kimata: "Hydrocarbons within anorthite megacrysts as a window to understanding the arc-magmatic process" N.Jb.Miner.Mh.Jg.1993. 408-416 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 木股三善: "島弧産灰長石巨晶の鉱物化学" 岩鉱. 89. (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] M.Kimata: "Crystal structure of KBSi_3O_8 isostructural with danburite" Mineral.Mag.57. 157-164 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] M.Kimata: "Refinement of the high-temperature crystal structure of gehlenite using a new radiative air-cooled heater." Transactions ACA.27. 301-308 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 木股三善: "八丈島産灰長石巨晶中の包有物" 岩鉱. 88. 191-192 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] F.C.Hawthorne: "The crystal structure of spangolite,a copper sulfate sheet mineral" Amer.Mineral. 78. 649-652 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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