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1988 Fiscal Year Final Research Report Summary

Geological and Petrological Study of the Cenozoic Volcanic Rocks in the Southwest Japan

Research Project

Project/Area Number 62460051
Research Category

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

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

Principal Investigator

MATSUMOTO Yukio  Yamaguchi University, Faculty of Science, Professor, 理学部, 教授 (30039763)

Co-Investigator(Kenkyū-buntansha) NAGAO Takashi  Yamaguchi University, Faculty of Science, Assistant Prof., 理学部, 助教授 (40136164)
SHIRAKI Keiichi  Yamaguchi University, Faculty of Science, Assistant Prof., 理学部, 助教授 (60144911)
Project Period (FY) 1987 – 1988
KeywordsSouthwest Japan / Cenozoic Volcanic Rock / 地質岩岩石学
Research Abstract

Results of the recent study in 1987-1988 arrived at the following conclusions.
1) The volcanostratigraphy of Kyushu, Ryukyu Islands, Setouchi and sanin regions, Oki and Ogasawara Islands are well defined.
2) The cenozoic geology in southwest Japan was so complicated by the volcanic series, such as, the Green Tuff and Setouchi series in the Miocene, Tairiku series from the late Miocene to Holocene, Hohi and Hisatsu series from the Pliocene to early Pleisto-cene, Buzen series in the middle Pleistocene, Sanin and Ryukyu series from the late Pleistocene to Holocene.
3) The alkali rocks are recognized in a part of the Tairiku and Hohi volcanic series. The tholeiitic rocks are observed in a part of the Green Tuff, Tairiku, Hohi, Hisatsu and Ryukyu series. Other volcanic rocks are belonged the calc-alkali rock series.
4) The high magnesian andesites are occured in the Setouchi series of calc-alkali rock series, and the tholeiitic rock from Iriomote-jima, Ryukyu islands of the Green Tuff series. the latter are explained by the crystallization of high temparature.
5) The petrogenesis of each volcanic rocks are explained by some condition, such as, the difference of mantle rocks, P-T condition and degree of melting, P-T condition of crystallization in magma, immiscibility in magam, magma mixing, assimilation and contamination.

  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 松本〓夫: 九州の後期新生代をめぐる諸問題. 33. 1-20 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松本〓夫: 九州の後期新生代をめぐる諸問題. 33. 235-249 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 白木敬一: Magma. 81. 7-11 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] SHIRAKI,Keiichi: Jour.Geol.Soc.Japan. 94. 387-390 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 永尾隆志: 岩石鉱物鉱床学会誌. 83. 191-202 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] MATSUMOTO,Yukio: First International Sympo.Tectonic,Metallogeny.Diwa(Geodepression)Regions.,Abstract. 1. 276 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松本〓夫: "火山の一生(世球の歴史をさぐる 2)" 青木書店, 190 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] MATSUMOTO,Yukio: "Igneous activities in the Tsushima Island, Nagasaki Prefecture, Japan" Monograph, Associ. Geol. Coll. Japan. 33. 1-20 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] MATSUMOTO, Yukio: "The late Cenozoic volcanic series in northern and central Kyushu, Japan" Monograph, Associ. Geol. Coll. Japan. 33. 235-249 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] SHIRAKI, Keiichi: "Boninite-like rocks in the Troodos ophiolite, Cyprus: Comparison with the Bonin Island boninites" Magma. 81. 7-11 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] SHIRAKI, Keiichi: "The pyroxene crystallization trend of a magnesian andesite from Iriomote-jima, Ryukyu Islands: a boninite analogue" Jour. Geol. Soc. Japan. 94. 387-390 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] NAGAO, Takashi: "Petrology of the alkali basalts in Mishima island, Yamaguchi prefecture, southwest japan with special reference to the primitive alkali basalt" Jour. Mineral. Petrol. Economic Geology. 83. 191-202 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] MATSUMOTO, Yukio: Kazan no Issho. Aoki Syokan, 190 (1987)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1990-03-20  

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