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The study of widespread tephras in central Japan with special reference to the volcanic history of Norikura volcanic zone.

Research Project

Project/Area Number 62540579
Research Category

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

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

Principal Investigator

KOBAYASHI Takehiko  The college of liberal arts, Toyama University, 教養部, 教授 (80019257)

Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1988: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1987: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsVolcanology / Norikura volcanic zone / Tephrochronology / widespread tephra layer / Ontake volcano / Younger Ontake Tephra Group / Tateyama volcano / 立山火山 / 大町テフラ層 / 高野層
Research Abstract

By means of tephrochronology, especially by widespread tephra layers from distant sources as Aira tn Ash layer(Abbr.:AT), Daisen Krayoshi Pumice layer(DKP), Volcanic ash layer of Aso 4, Kikai-Tozurahara Ash(K-Tz) and so on, the isolated volcanic products belonging to Norikura volcanic zone are correlated each other for the purpose of investigating volcanic evolution of the zone. The volcanic history of the zone is supposed to relate to quaternary tectonic movement, because the volcanoes of the zone align well on the N-S trend overllapping to one of the most active uplift-axis of central japan in quaternary time and paralleling to the northern part of the Itoigawa-Shizuoka tectonic zone.
The tephrochronological research is effective in correlating the younger halves of Ontake and Tateyama volcanoes with their own numerous tephra layers, and tephra stratigraphy is not effective for Norikura, Yakedake and Washiba-Kumonotaira volcanoes and the older halves of the former two volcanoes.
Norikura volcanic zone started about 0.7-0.6 Ma ago and the volcanism contnued for perhaps 0.3 ma based on radiometric age. After the long inactive period, the younger activity simultaneously took place about 0.1 Ma ago and the earlier stage of the activity erupted the most acidic products on each volcano. Magmatic activity lasted about 30,000 years ago on Ontake and Tateyama volcano. And continued more later on Norikura and Yakedake volcanoes. Recently the phreatic activities repeated the volcanic zone.
To complete the study, we need the radiometric age data for the products on Norikura, Yakedake and Washiba-Kumonotaira volcanoes because they do not seem to have the extensive tephra layers.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] 竹本弘幸: 第四紀研究. 25. 337-352 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 小林武彦: 地形. 8. 113-125 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Kobayashi,Takehiko: Proceeding of Kagoshima international conference on volcanoes 1988. 514-517 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 小林武彦: 第四紀研究.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 小林武彦: 火山.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 小林武彦: 地質学雑誌.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 山田直利: "地域地質研究報告五万分の1地質図幅「御嶽山地域の地質」および同説明書" 通産省工業技術院地質調査所, 136 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 日本の地質「中部地方 II」編集委員会: "日本の地質「中部地方 II」" 共立出版株式会社, 9 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Takemoto, Hiroyuki: "Stratigraphy and correlation of the Younger Ontake Tephra Group---An implica-tion to the Late Pleistocene chronology in Central Japan---" The Quaternary Research, Japan.25. 337-352 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Kobayashi, Takehiko: "Geological aspect of the 1984 Denjo Landslide on Ontake volcano" Transactions, Japanese Geomorphological Union.8. 113-125 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Kobayashi, Takehiko: "The tephrochronological study for Recent volcanic history of strato-volcanoes in Central Japan based on their small-scale tephra layers." Proceeding of Kagoshima International Conference on Volcanoes 1988.514-517 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Kobayashi, Takehiko: "Geomorphrogical evolution of Tateyama volcano" Quaternary Research, Japan.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Kobayashi, Takehiko: "The volcanic history of Norikura Volcanic zone." Journal of the Geological Society of Japan.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yamada, Naotoshi: Geology of the Ontakesan district. With Geological Sheet Map at 1:50,000.Geological Survey of Japan., 136 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Kobayashi,T.: Proceeding of Kagoshima international conference on voleanoes 1988. 514-517 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 小林武彦: 第四紀研究.

    • Related Report
      1988 Annual Research Report
  • [Publications] 小林武彦: 火山.

    • Related Report
      1988 Annual Research Report
  • [Publications] 小林武彦: 地質学雑誌.

    • Related Report
      1988 Annual Research Report
  • [Publications] 山田直利: "地域地質研究報告五万分の1地質図幅「御獄山地域の地質」および同説明書" 通産省工業技術院地質調査所, 1-136 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 日本の地質「中部地方 11」編集委員会: "日本の地質「中部地方11」" 共立出版, 181-188 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 竹本弘幸: 第四紀研究. 25. 337-352 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 小林武彦: 地形. 8. 113-125 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] KOBAYASHI, T.: The Proceeding of Kagoshima International Conference on Volcanoes. 8 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 山田直利: "地域地質研究報告5万分の1地質図幅「御獄山地域の地質」および同説明書" 通産省工業技術院地質調査所, 136 (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] 森下晶: "日本の地質「中部地方II」" 共立出版, 300 (1989)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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