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西南日本の新生代火成活動とテクト二クス

Research Project

Project/Area Number 06302028
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section総合
Research Field Geology
Research InstitutionYamaguchi University

Principal Investigator

NAGAO Takashi  Center of Instrumental Analysis, Yamaguchi University Associate Professor, 機器分析センター, 助教授 (40136164)

Co-Investigator(Kenkyū-buntansha) SHUTO Kenji  Faculty of Science, Niigata University, Professor, 理学部, 教授 (50143748)
SATO Hiroaki  Faculty of Science, Kobe University, Professor, 理学部, 教授 (60019495)
NAKADA Setsuya  Earthquake Research Institute, University of Tokyo, Associate Professor, 地震研究所, 助教授 (60128056)
TAKAHASHI Masaaki  Faculty of Science, Ibaraki University , Professor, 理学部, 教授 (20134166)
SHIRAKI Keiichi  Faculty of Science Yamaguchi University Professor, 理学部, 教授 (60144911)
大和田 正明  山口大学, 理学部, 助手 (50213905)
澤井 長雄  山口大学, 理学部, 助教授 (30127766)
Project Period (FY) 1994 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 1996: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1995: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1994: ¥3,500,000 (Direct Cost: ¥3,500,000)
KeywordsSouthwest Japan / Island arcs / Cenozoic / Igneous activity / Magma / Tectonics / Radiogenic age / Isotope / 玄武岩 / 安山岩 / プルトニズム
Research Abstract

(1) Cenozoic magmatism in southwest Japan was reviewed and some ideas of origin of island arc magmatism were proposed.
(2) Late cenozoic basalts are widely distributed along the southwest Japan arc. In the Chugoku district, an enriched mantle plume with an EM I signature ascended from deep in the mantle. On the other hand, mantle diapirs characterized by an EM II signature rose slowly and were entrained an overlying N-MORB like depleted mantle below the north Kyushu district.
(3) The magmas of Higashi-Matsuura alkali basalts (HMB) attract attention by their three cyclic variation in composition (magmatic cycles). It has been found that each magmatic cycle starts with the eruption of primitive basalts followed by fractionated ones. This suggests that the magma chambers of HMB were compositionally stratified.
(4) The rocks of Uku island represent four magmatic cycles. Each cycle began with the eruption of basic magma, followed by eruption of andesitic to dacitic magma. The chemical variatio … More n of these rocks are controlled by fracitonal crystallization, with minor wall rock assimilation.
(5) Adakite-like magmas in Daisen volcanic zone were derived from partial melting of lower crust or mixing of mantle derived magma and adakite-like magma.
(6) A dacite dome at Unzen volcano grew mainly exogeneously when it was small and the effusion rate was high, but endogeneously when the dome became large and the effusion rate declined.
(7) In Cenozoic southern Kyushu, moderate to high potassic "flood andesites" were derived from high-magnesian andesite and voluminous low potassic andesites were produced by fractional crystallization of basalt magmas.
(8) Many high-magnesian andesites (HMA) in Cenozoic southwest Japan were petrographically described and the origin of HMA magmas was discussed.
(9) Mechanisms of Cretaceos to Paleogene plutonism were explained by the plate motions.
(10) The low potassium analytical method with ordinary flame photometry in convenience and high precision was developed. This method was applied to the K-Ar dating of igneous and metamorphic hornblendes from ophiolites and coexisting hornblende and clinopyroxene from volcanic rocks. Less

Report

(4 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • 1994 Annual Research Report
  • Research Products

    (39 results)

All Other

All Publications (39 results)

  • [Publications] 井川寿之・永尾隆志: "北西九州,多良岳火山地域に分布する玄武岩類と安山岩類の成因関係" 日本岩石鉱物鉱床学会誌. 91. 321-338 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Morris,P.A.and Itaya,T.: "The Matsue Formation : Evidence for gross mantle heterogeneity beneath southwest Japan at 11Ma." Island Arcs. (in press). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 中田節也: "溶岩ドーム噴火の多様性" 地学雑誌. 105. 244-248 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 佐藤博明: "雲仙普賢岳噴出物の岩石組織と噴火モデル" 地質学論集. 46. 115-121 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 高橋栄一・高橋正樹: "何が島弧火山の深部構造を決めるのか" 科学. 65. 638-649 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 周藤賢治・加藤 進・大木淳一・加々美寛雄・荒戸裕之・Rezanov,A.: "新潟油・ガス田における中新世のバイモーダル火山活動-背弧側海盆拡大との関連-" 石油技術協会誌. (印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nagao, T., Hase, Y., Ikawa, T., Nagamine, S., Sakaguchi, K., Yamamoto, M., Shuto, K.and Hayashida, K.: "Characteristics of andesites forming lave plateaus, in Kyushu, SW Japan : proposal of "flood andesite"." Mem.Geol.Soc.Japan. 44. 155-164 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kosaka, T.and Nagao, T.: "Tholeiitic volcanic rocks from Uku Island, Nagasaki Prefecture, SW Japan." Mem.Geol.Soc.Japan. 44. 139-154 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kakubuchi, S., Nagao, T., Kagami, H.and Fujibayashi, N.: "Chemical and isotopic characteristics of the source mantle for late Cenozoic basalts in southwest Japan." Mem.Geol.Soc.Japan. 44. 321-335 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Ikawa, T.and Nagao, T.: "Genetic relationships between basalts and andesites in the Taradake volcanic area, Northwest Kyushu." J.Japan Min.Petro.Econ.Geol.91. 321-338 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nomura, R., Furuyama, K., Kotaki, A., Inoue, Y., Takasu, A.and Miyake, Y.: "Volcanic history of the Pleistocene Kamisano volcano, northern Hyogo Prefecture, southwest Japan." Earth Science (Chikyu Kagaku). 50. 370-384 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nagamine, S., Hase, Y., Nagao, T.and Sakaguchi, K.: "Volcano-stratigraphy of Ontake and its southwestward area in the Hisatsu volcanic province in southern Kyushu, Japan." Mem.Fac.General Education, Kumamoto Univ.30. 143-154 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Morris, P.A., Iizumi, S., Itaya, T., Kagami, H.and Murakami, H.: "Age relations and petrology of alkalic igneous rocks from Oki-Dozen, Southwest Japan." Geochem.J.(in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Morris, P.A.and Itaya, T.: "The Matsu Formation : Evidence for gross mantle heterogeneity beneath southwest Japan at 11Ma." The Island Arcs. (in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nakada, S., Miyake, Y., Sato, H., Oshima, O.and Fjinawa, A.: "Endogeneous growth of dacite dome at Unzen volcano (Japan), 1993-1994." Geology. 23. 157-160 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Oowada, M., Tanaka, S., Yuhara, M.and Kagami, H.: "Rb-Sr whole rock ishochron age of the Habu granodiorite in the eastern Yamaguchi Prefecture." J.Japan.Min.Petr.Econ.Geol.90. 358-364 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sato, H.and Taniguchi, H.: "Relatioship crator size and ejecta volume of recent magmatic and phreatomagmatic eruptions : implication for energy partitioning." Geophys.Res.Lett.(in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shiraki, K., Yoshioka, K.and Matsumoto, Y.: "Magnesian andesites in the Oono volcanick rocks, central Kyushu : westward continuation of the Setouchi volcanic belt." J.Geol.Soc.Japan. 101. 387-392 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Ohki, J., Shuto, K.and Kagami, H.: "Middle Miocene bimodal volcanism by asthenospheric upwelling : Sr and Nd isotopic evidences from the backarc region of the Northeast Japan arc." Geochem.J.28. 473-487 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Takahashi, M.: "Large volume felsic volcanism and crustal strain rate." Bull.Volconol.Soc.Japan. 40. 33-42 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Watanabe, K., Maeda, T.and Izawa, E.: "Fission track ages of Plio-Pleistocene volcanic rocks in the Okuchi region, southern Kyushu, Japan." Geothrmal Res.Rep.Kyushu Univ.3. 98-110

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yano, T.and Wu, G.: "Middle Jurassic to Early Cretaceous arch tectonics in East Asian continental margin." Proc.15th International Sympo.Kyungpook Naitonal Univ.177-192 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 井川寿之・永尾隆志: "北西九州,多良岳火山地域に分布する玄武岩類と安山岩類の成因関係" 日本岩石鉱物鉱床学会誌. 91・9. 321-338 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Morris,P.A.and Itaya,T.: "The Matsue Formation:Evidence for gross mantle heterogeneity beneath southwest Japan at 11Ma." Island Arcs. (in press). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 中田節也: "溶岩ドーム噴火の多様性" 地学雑誌. 105・2. 244-248 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 佐藤博明: "雲仙普賢岳噴出物の岩石組織と噴火モデル" 地質学論集. 46. 115-121 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 高橋栄一・高橋正樹: "何が島弧火山の深部構造を決めるのか" 科学. 65. (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 周藤賢治・加藤 進・大木淳一・加々美寛雄・荒戸裕之・Rezanov.A.: "新潟油・ガス田における中新世のバイモーダル火山活動-背弧側海盆拡大との関連-" 石油技術協会誌. (印刷中). 638-649 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 永尾隆志・長谷義隆・ほか6名: "九州の平坦面を形成する安山岩の地質学的・岩石学的特徴:"洪水安山岩"の提唱" 地質学論集. 44. 155-164 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Shiraki,K.,Yoshioka,K.and Matsumoto,Y.: "Magnesian andesites in the Oono volcanic rocks,central Kyushu : westward continuation of the Setouchi volcanic. belt" Jour.Geol.Soc.Japan. 101. 387-392 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 高橋正樹・野口高明・田切美智雄: "希土類元素組成からみた東北日本中新世アイスランダイトの成因" 地質学論集. 44. 65-74 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Nakada,S.Motomura,Y.and Shimizu,H.: "Manner of magma ascent at Unzen Volcano (Japan)" Geophys.Res.Lett.22. 567-570 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Sato,H.: "Textural difference between pahoehoe and aa lavas of Izu-Oshima Volcano,Japan an experimental study on population density of plagioclase" Jour.Volcanol.Geothrm.Res.66. 101-113 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 周藤賢治・ほか5名: "東北日本弧リソスフェア性マントルにおけるHFS元素の枯渇現象" 地質学論集. 44. 241-262 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 永尾隆志,ほか8名: "九州の平坦面を形成する安山岩の地質学的・岩石学的研究:“洪水安山岩"の提唱" 地質学論集. 44(印刷中). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 小阪,哲也,永尾隆志: "長崎県宇久島のソレアイト質火山岩類" 地質学論集. 44(印刷中). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 長峰 智,長谷義隆,永尾隆志,坂口和之: "九州南部肥薩火山区西部鬼岳およびその南西方地域の火山層序" 熊本大学教養部紀要(自然科学篇). 30. 143-154 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 佐藤博明,清水 洋,中田,節也,大見,士朗: "地溝幅が活火山付近で狭くなる現象について:雲仙-島原地溝の場合" 地学雑誌. 103. 471-478 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 高橋正樹: "複成火山の構造と地殻応力場1.火道安定型・不安定型火山" 火山. 39. 191-206 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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