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Reflectance Change in Cenozoic vitrinite: Estimation for the maximum paleo-temperature of Cenozoic geologic units

Research Project

Project/Area Number 19K14807
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 17030:Human geosciences-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Takahashi Koji  国立研究開発法人産業技術総合研究所, 地質調査総合センター, 主任研究員 (80762252)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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石炭 / 新生代 / 抑圧ビトリナイト / ビトリナイト反射率 / 最高被熱温度 / 熱分解実験
Outline of Research at the Start

植物の木質部に由来する有機物『ビトリナイト』は、石炭や堆積岩中に普遍的に存在する。その光学反射率は、反応速度論的に変化するため、地質体の最高被熱温度推定に用いられてきたが、多くの新生代石炭中のビトリナイトは、中・古生代石炭に比べて反射率の変化速度が遅い。ビトリナイト反射率からの地質体の最高被熱温度推定は、中・古生代のデータに基づく反応速度論が用いられているため、新生代地質体の場合は、適切に温度を推定出来ていない可能性がある。そこで本研究は、新生代石炭の加熱実験によって、新生代ビトリナイトの反射率変化に関する反応速度式を構築し、新生代地質体の最高被熱温度推定法の開発を進める。

Outline of Final Research Achievements

In order to better estimate the maximum paleo-temperature of Cenozoic geologic units, anhydrous pyrolysis experiments of Cenozoic coal samples were conducted to evaluate the effect of hydrocarbon generation potential on the reaction kinetics of the VRr value. As a result, the coal samples with higher hydrocarbon generation potential showed slower changes in VRr values. This study provides useful information for estimating the maximum paleo-temperature of Cenozoic geologic units, especially coal seams, based on VRr values.

Academic Significance and Societal Importance of the Research Achievements

エネルギー資源の安定確保は、最重要課題の一つである。東アジアの大陸縁辺域には新生代石炭が広く分布し、それらの石炭に伴う巨大な石油鉱床が数多く発見されている。本研究成果は、高い炭化水素生成能力を有する新生代石炭において、石油炭化水素の生成・排出が生じる温度や深度の解明に有用であり、より効率的な探鉱活動につながるものと期待される。また、本研究成果は、有機物(炭質物)を用いた高精度な地質温度計の構築にも有用であり、これまで未解明であった地質構造発達史の復元につながるものである。

Report

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

    (8 results)

All 2022 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Determination of the laser–induced damage threshold for graphite and coal with deep–UV micro–Raman spectroscopy2022

    • Author(s)
      NAKAMURA Yoshihiro, TAKAHASHI Koji U., HOSOI Jun, HARA Hidetoshi
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 117 Issue: 1 Pages: n/a

    • DOI

      10.2465/jmps.220316

    • ISSN
      1345-6296, 1349-3825
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Maturation on the Dimethyl Naphthalene Indicator Used to Evaluate the Source Organic Type of Crude Oil2021

    • Author(s)
      Asahina Kenta、Takahashi Koji U.、Suzuki Yuichiro、Nakajima Takeshi、Kobayashi Miyuki
    • Journal Title

      Chemistry Letters

      Volume: 50 Issue: 9 Pages: 1718-1721

    • DOI

      10.1246/cl.210342

    • NAID

      130008088243

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Source rock potential of coal and coaly mudstones from the Eocene Urahoro Group in the Kushiro Basin, eastern Hokkaido, Japan2020

    • Author(s)
      Koji U. Takahashi, Takeshi Nakajima, Yuichiro Suzuki, Sumito Morita, Takayuki Sawaki, Yasuaki Hanamura
    • Journal Title

      Proceedings of the Thematic Session "Geoscience for sustainable Development" 55th CCOP Annual Session

      Volume: 1 Pages: 15-19

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hydrocarbon generation potential and thermal maturity of coal and coaly mudstones from the Eocene Urahoro Group in the Kushiro Coalfield, eastern Hokkaido, Japan2020

    • Author(s)
      Koji U. Takahashi, Takeshi Nakajima, Yuichiro Suzuki, Sumito Morita, Takayuki Sawaki, Yasuaki Hanamura
    • Journal Title

      International Journal of Coal Geology

      Volume: 217 Pages: 103322-103322

    • DOI

      10.1016/j.coal.2019.103322

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 堆積岩有機物の熱熟成と天然ガスに関する研究2022

    • Author(s)
      高橋 幸士
    • Organizer
      第39回有機地球化学シンポジウム(2022年横須賀シンポジウム)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Determination of laser induced damage threshold for graphite and low-maturity carbonaceous material using deep UV micro-Raman spectroscopy2022

    • Author(s)
      Yoshihiro Nakamura, Koji U. Takahashi, Jun Hosoi, Hidetoshi Hara
    • Organizer
      JpGU meeting 2022 (Makuhari Messe)
    • Related Report
      2022 Annual Research Report
  • [Presentation] 釧路炭田に分布する始新統浦幌層群石炭の根源岩能力2019

    • Author(s)
      高橋幸士、中嶋健、鈴木祐一郎、森田澄人、佐脇貴幸、花村泰明
    • Organizer
      石油技術協会
    • Related Report
      2019 Research-status Report
  • [Presentation] Source rock potential of coal and coaly mudstones from the Eocene Urahoro Group in the Kushiro Basin, eastern Hokkaido, Japan2019

    • Author(s)
      Koji U. Takahashi, Takeshi Nakajima, Yuichiro Suzuki, Sumito Morita, Takayuki Sawaki, Yasuaki Hanamura
    • Organizer
      55th Coordinating Committee Geoscience Programmes in East and SouthEast Asia Annual Session
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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