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Rock magnetic studies in evaluating thermal history of hot springs in active volcanic areas: Case studies from Mn wad deposits in Hokkaido, Japan

Research Project

Project/Area Number 19K03989
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 17030:Human geosciences-related
Research InstitutionUniversity of Toyama

Principal Investigator

Kawasaki Kazuo  富山大学, 学術研究部都市デザイン学系, 准教授 (60624806)

Co-Investigator(Kenkyū-buntansha) 酒井 英男  富山大学, 理学部, 客員教授 (30134993)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsマンガン土 / 鉱床 / 温泉水 / 火山 / 環境磁気 / 古地磁気 / 岩石磁気 / マンガン / 火山活動 / 磁気特性 / 北海道 / 岩石磁気学 / 古地磁気学 / 年代測定
Outline of Research at the Start

火山噴火の予測に対し,長期に渡る連続的な火山活動記録は必須であるが,常時観測網の整備前の連続的な時系列データの取得は著しく困難である.本研究は,火山活動と密接な関係にある温泉水に着目し,北海道の活火山地域の温泉水から恒常的に沈殿する二酸化マンガンを対象に,古地磁気・岩石磁気学研究を行う.採取試料から,連続的な古地磁気年代と磁性粒子の種類・量・粒径の変化を求め,温泉水の活動期間と環境変化を明らかにし,活火山の連続的な熱史の解明を試みる.

Outline of Final Research Achievements

This study shows that the major magnetic minerals in manganese wad sediments collected from the foot of either Komagatake and Asahidake volcanoes in Hokkaido are consistent regardless of depth from the pond bottom or locations of the core collection. The results indicate that there would have been no significant changes in volcanic conditions or the pathways of hot spring water since these manganese wads had precipitated from the hot springs by bacteria. Paleomagnetic and rock magnetic analyses of the Grum deposit in Canada indicate that the intrusion of the nearby Cretaceous Anvil batholith was not related to the formation of this deposit and that the ore genesis was associated with tectonic movements of the Jurassic age. These results show the effectiveness of paleomagnetism and rock magnetism in studying ore deposits, volcanism, and their relationships.

Academic Significance and Societal Importance of the Research Achievements

一般的に火山活動の解明には,古文書や火山灰層・火山噴出物等の研究から火山噴火年代や噴火の様式を明らかにされる.一方,噴火を伴わない期間については,常時観測網が整備される以前の詳細な情報の取得は著しく困難である.本研究で得られた成果により,火山の状態の推定に温泉水から恒常的に沈殿する堆積物の岩石磁気特性解析が有効である新知見が得られ,火山学や資源地質学への新規手法としての展開が期待される.

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021 2020 2019

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (7 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Paleomagnetism of the Grum Zn-Pb-Ag deposit, Selwyn Basin, Yukon, Canada2023

    • Author(s)
      Kawasaki Kazuo、Symons David T.A.
    • Journal Title

      Canadian Journal of Earth Sciences

      Volume: 60 Issue: 1 Pages: 52-61

    • DOI

      10.1139/cjes-2021-0114

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 岩石磁気の手法を用いた北海道旭岳温泉マンガン土の予察的結果2023

    • Author(s)
      川﨑一雄,石田翔稀
    • Organizer
      資源地質学会第72回年会講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Rock magnetic properties of Manganese wad sediments: Case study of the Komanoyu hot springs, Hokkaido, Japan.2023

    • Author(s)
      Kazuo Kawasaki, Yuya Takemura, Naoto Ishikawa
    • Organizer
      MedGU23
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 岩石磁気の手法を用いた北海道旧駒の湯温泉マンガン土の予察的結果2022

    • Author(s)
      川﨑一雄,佐々勇真,竹村祐哉,石川尚人
    • Organizer
      資源地質学会第71回年会講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Preliminary rock magnetic results of Manganese wad sediments at Komanoyu hot springs, Hokkaido, Japan.2022

    • Author(s)
      Kawasaki, K., Sassa, Y., Ishikawa, N.
    • Organizer
      AOGS2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] カナダ,ユーコン準州,Grum Zn-Pb 鉱床の古地磁気年代2021

    • Author(s)
      川崎 一雄,David T.A. Symons
    • Organizer
      資源地質学会第70回年会講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Preliminary paleomagnetic results from the manganese wad deposit at the Sanbe hot springs, Shimane.2020

    • Author(s)
      川崎 一雄,小林 素直
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] Paleomagnetic age dating of the Grum Zn-Pb-Ag deposit, Canada.2019

    • Author(s)
      Kawasaki, K., Symons, D.T.A.
    • Organizer
      AOGS 16th Annual Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2025-01-30  

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