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Petrological Study on Continental Lower Crustal Materials.

Research Project

Project/Area Number 01540653
Research Category

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

Allocation TypeSingle-year Grants
Research Field 鉱物学(含岩石・鉱床学)
Research InstitutionYokohama National University

Principal Investigator

ARIMA Makoto  Yokohama Natl. Univ., Fac. Educ., Assoc. Prof., 教育学部, 助教授 (10184293)

Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1990: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1989: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsContinental Lower Crust / Granulite Facies Metamorphic Rocks / Precambrian / Osumilite / Metamorphism / Partial Melting / 大隈石 / 部分融解 / 大陸地殻下部 / 高圧実験 / 珪酸塩鉱物 / 相平衡 / グラニュライト
Research Abstract

Aims of this study are to understand petrological and chemical features of lower parts of continental crust and to evaluate chemical changes in the lower crust associated with granulite facies metamorphism and partial melting processes. This study particularly focuses on the processes related to formation of granulite facies metasedimentary rocks under lower crustal conditions. The main results of this study can be summarized as follows ;
1. Metamorphic conditions, age, spatial distribution are determined for granulite facies metasedimentary rocks of lower crustal origin occurring in Labrador, Canada. Peak metamorphic condition of 1000^゚C and 10 kbar are estimated on the basis of mineral parageneses of the rocks. Osumilite, sapphirine, and other metamorphic minerals were formed in metasedimentary rocks by contact metamorphism associated with an emplacement of anorthositic magma under lower crust conditions. This is fifth metamorphic osumilite occurrence ever reported. Geochemical characteristics of the metasedimentary rocks suggest that partial melting and consequent melt segragation are important processes resulting in chemical modification of the lower crustal matireals.
2. High pressure and temperature experiments were done to determine the stability relationship of osumilite in pelitic compositions under lower crustal conditions. The results suggest that osumilite is stable lower crustal phase as high as 12 kbar at 1000^゚C.
3. This study clearly demonstrates that granulite facies metamorphism and crustal anatexis are closely related processes. Extremely low water activity in granulites would be caused by partial melting and melt segregation processes. It is most likely that parts of the continental lower crust is restite origin which is probably related to granitic magma generation.

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (30 results)

All Other

All Publications (30 results)

  • [Publications] Aima,M.&Gower,C.F.: "Osumiliteーbearing granulites in the Eastern Grenuille Province,Eastern Labrador,Canada:Mineral paragenesas and metamorphic conditions." Journal of Petrology. 32. 29-61 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Arima,M.,Motoyoshi,Y.&Shiraishi,K.: "Stability of osumilite in granulite facies metamorphism:KMAS system and natural occurrences," proceedings of the NIPR Symposium on Antarctica Geosciences. 4. 135-141 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Arima,M: "Geochemical characteristics of osumiliteーbearing granulites in The Sand Hill River area,Labrador,Canada." Journal of Metamorphic Geology. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 有馬 真,平田 大二,猪俣 道也,相原 延光: "三浦層群に含まれるスコリアの岩石学" 月刊.地球. 13. 35-38 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 有馬 真,末包 鉄郎,門田 真人,加藤 英樹,山下 浩之: "丹沢山地で発見されたざくろ石を含む流紋岩" 神奈川地学. 71. 1-6 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 有馬 真,樋口 将士,早律 昭男: "蛇石火山岩類の鉱物組成とKーAr年代" 横浜国立大学.理科教育実習施設研究報告. 6. 71-80 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 有馬 真,今橋 健彦: "南八ケ岳火山岩中の捕獲岩について予察的報告" 横浜国立大学.教育学部野外教育実習施設研究報告. 7. 1-6 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Watanabe,S.and Arima,M.: "Vesuvianite and associated skarn minerals in the Shiraishizawa area,Tanzawa Mountainland,central Japan." Science Report of the Yokohama Nat'sonal University Scc.II. 36. 71-86 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 末包 鉄郎,門田 真人,有馬 真: "神奈川県西丹沢産含ザクロ石流紋岩"

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Arima, M. & Gower, C. F.: "Osumilite-bearing granulites in the Eactern Grenville Province. Eastern Labrador, Canada : Mineral parageneses and metamorphic conditions" Journal of Petrology. vol. 32. 29-61 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Arima, M., Motoyoshi, Y. & Shiraishi, K.,: "Stability of osumilite in granulite facies metamorphism : KMAS system and natural occurrences" Proceedings of the NIPR Symposium on Antarctica Geosciences. No. 4. 135-141 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Arima, M.: "Geochemical characteristics of osumilite-bearing granulites in the Sand Hill River area, Labrador, Canada" Journal of Metamorphic Geology. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Arima, M., Hirata, D., Inomata, M. & Aihara, N.: "Petrology of scoriae from Miura Peninsula" Monthly Earth. 13. 35-38 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Arima, M., Suekane, T., Kadota, M., Kato, H. & Yamashita, H.: "Garnet-bearing rhyolite in west Tanzawa Mountainland." Kanagawa Chigaku. No 70-71. 1-6 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Arima, M., Higuchi, M. & Hayatsu, A.: "Mineral compositions and K-Ar age of Jaishi volcanic rocks, Izu Peninsula" Reports of the Manazuru Marine Laboratory for Science Education, Faculty of Education Yokohama National University. No. 5. 71-80 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Arima, M. & Imahashi, T.: "Preliminary report of pyroxene-bearing xenoliths from Yatsugatake volcano" Mem. Inst. Field Educ. Yokohama National University. No. 7. 1-6 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Watanabe, S. & Arima, M.: "Vesuvianite and associated skarn minerals i the Shiraishizawa area, Tanzawa Mountainland, Central Japan." Science Report of the Yokohama National University, Sec. II. No. 36. 71-86 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Suekane, T., Kadota, M. & Arima, M.: "Rhyolite with garnet phenocryst in the west Tanzawa area" Kanagawa Prefecture. Toukai Kiyou. No. 26. 350-336 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Arima,M.& Gower,C.F.: "Osumiliteーbearing granulites in the Eastern Grenville Province,Eastern habrador,Canada:Mineral paragoneses and metamorphic conditions." Journal of Petrology. 32. 29-61 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Arima,M.Motoyoshi,Y.&Shiraishi,K.: "Stability of osumilite in granulite facies metamorphism:KMAS system and natural occurrences." Proceedings ot the NIPR Symposium on Antarctica Geosciences. 4. 135-141 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Arima,M.: "Geochemical Characteristics of osumiliteーbearing granulites in the Sand Hill River area,Labrador,Canada" Journal of Metamorphic Geology. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 有馬 真,平田 大二,猪俣 道也,相原 延光: "三浦層群に含まれるスコリアの岩石学" 月刊、地球. 13. 35-38 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 有馬 真,末包 鉄道,門田 真人,加藤 英樹,山下 浩之: "丹沢山地で発見されたざくろ石を含む流紋岩" 神奈川地学. 71. 1-6 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 有馬 真,樋口 将士,早津 昭男: "蛇石火山岩類の鉱物組成とKーAr年代" 横浜国立大学.理科教育実習施設研究報告. 6. 71-80 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 有馬,真,今橋健彦: "南八ヶ岳火山岩中の捕獲岩についての予察的報告" 横浜国立大学・教育学部野外教育実習施設研究報告. 7. 1-6 (19889)

    • Related Report
      1989 Annual Research Report
  • [Publications] Watanabe,S and Arilma,M: "Vesuvianite and associated Skarn minerals in the Shiraishizawa area,Tanzawa Mountainland,Central Japan." Science Reports of the Yokohama National University sec.II.36. 71-86 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 有馬真,樋口將士,早津昭男: "蛇石火山岩類の鉱物組成とK-Ar年代" 横浜国立大学・教育学部理科教育実習施設研究報告. 6. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 有馬真,末包鉄郎,門田真人,加藤英樹,山下浩之: "丹沢山地西部で発見された、ざくろ石を含む流紋岩" 神奈川地学. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 末包鉄郎,門田真人,有馬真: "神奈川県西丹沢産含ザクロ石流紋岩" 東海紀要. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Arima,M.and Gower,C.F.: "Petrological and geochemical Characteristics of Osumilitebearing granulites in the eastern Grenville Province,eastern Labrador,Canada." Journal of Petrology. (1990)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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