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Detection of microbial activity at seafloor hydrothermal system by sulfur isotope micro-analysis.

Research Project

Project/Area Number 16204047
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Geochemistry/Astrochemistry
Research InstitutionOKAYAMA UNIVERSITY

Principal Investigator

CHIBA Hitoshi  Okayama University, Graduate School of Natural Science and Technology, Professor, 大学院自然科学研究科, 教授 (30144736)

Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥35,360,000 (Direct Cost: ¥27,200,000、Indirect Cost: ¥8,160,000)
Fiscal Year 2006: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2005: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2004: ¥29,770,000 (Direct Cost: ¥22,900,000、Indirect Cost: ¥6,870,000)
Keywordssulfur / isotope / microanalysis / seafloor hydrothermal system / microbial activity / 硫黄同位体比 / 微生物 / 同位体比
Research Abstract

Elemental Analyzer-continuous flow Isotope Ratio Mass Spectrometer (EA-IRMS) was introduced in our laboratory and checked for the ability of the EA-IRMS on micro-scale sulfur isotope ratio measurement. Seafloor hydrothermal sulfide-sulfate chimney and sulfide are were described in detail from the view points of mineralogy and economic geology in order to prepare the detection of the microbial activity at the seafloor hydrothermal system by the sulfur isotopic ratio.
Elemental Analyzer-continuous flow Isotope Ratio Mass Spectrometer (EA-IRMS) was found to be capable to analyze sulfur isotopic compositions of common sulfide and sulfate mineral, such as chalcopyrite, pyrite, sphalerite and barite, in seafloor hydrothermal chimney. The required amount of sample for the measurement is very small, which is 1/100 compared to the amount used by conventional double inlet IRMS. Measurement of reference material during sample analyses and the use of combustion improver made the precision of analysis as accurate as those obtained by the conventional method, though the raw measured sulfur isotope ratios increase during consecutive measurements. Furthermore, Niobium oxide was found to be a good combustion improver instead of the commonly used highly toxic Vanadium oxide.
Active and dead seafloor hydrothermal chimneys in Iheya North seafloor hydrothermal system, Okinawa Trough, were mineralogically examined in detail to prepare the detection of microbial activity using their sulfur isotopic ratios. They are mainly consisted of chalcopyrite, pyrite, sphalereite and barite. From the occurrences and texture of these minerals, the seafloor chimney growth model in the Okinawa Trough seafloor hydrothermal system was established.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (21 results)

All 2006 2005 2004

All Journal Article (21 results)

  • [Journal Article] Unique geochemistry of submarine hydrothermal fluids from arc-backarc settings of the western Pacific.2006

    • Author(s)
      Gamo, T. et al.
    • Journal Title

      AGU Geophysical Monograph 166

      Pages: 147-161

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Hydrogen, oxygen and sulfur isotope studies of seafloor hydrothermal system at the Desmos caldera, Manus back-arc basin, Papua New Guinea : an analogue of terrestrial acid hot crater-lake.2006

    • Author(s)
      Gena, K.R.et al.
    • Journal Title

      Resource Geology 65

      Pages: 183-190

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Microbial community in a sediment-hosted CO_2 lake of the southern Okinawa Trough hydrothermal system.2006

    • Author(s)
      Inagaki, F. et al.
    • Journal Title

      Proceedings of the National Academy of Sciences 103

      Pages: 14164-14169

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Unique geochemistry of submarine hydrothermal fluids from arc-backarc settings of the western Pacific.2006

    • Author(s)
      Gamo T.et al.
    • Journal Title

      AGU Geophysical Monograph 166

      Pages: 147-161

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Hydrogen, oxygen and sulfur isotope studies of seafloor hydrothermal system at the Desmos caldera, Manus back-arc basin, Papua New Guinea : an analogue of terrestrial acid hot crater-lake.2006

    • Author(s)
      Gena K.R.et al.
    • Journal Title

      Resource Geology 65

      Pages: 183-190

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Microbial community in a sediment-hosted CO_2 lake of the southern Okinawa Trough hydrothermal system.2006

    • Author(s)
      Inagaki F. et al.
    • Journal Title

      Proceedings of the National Academy of Sciences 103

      Pages: 14164-14169

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Sclerite formation in the hydrothermal-vent "scaly-foot" gastropod - possible control of iron sulfide biomeneralization by animal.2006

    • Author(s)
      Suzuki, Y., Kopp, R.E., Kogure, T.et al.
    • Journal Title

      Earth and Planetary Science Letters 242

      Pages: 39-50

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Unique geochemistry of submarine hydrothermal fluids from arc-backarc settings of the western Pacific.2006

    • Author(s)
      Gamo, T., J.Ishibashi, U.Tsunogai, K.et al.
    • Journal Title

      AGU Geophysical Monograph 166

      Pages: 147-161

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Hydrogen, oxygen and sulfur isotope studies of seafloor hydrothermal system at the Desmos caldera, Manus back-arc basin, Papua New Guinea : an analogue of terrestrial acid hot crater-lake.2006

    • Author(s)
      Gena, K.R., Chiba, H., Mizuzta, T.et al.
    • Journal Title

      Resource Gology 65

      Pages: 183-190

    • NAID

      40007278241

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Microbial community in a sediment-hested CO_2 lake of the southern Okinawa Trough hydrothermal system.2006

    • Author(s)
      Inagaki, F., Kuypers.M., Tsunogai, U.et al.
    • Journal Title

      Proceedings of the National Academy of Sciences 103

      Pages: 14164-14169

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 八丁原地熱地帯のハイポジーン酸性変質体 -明礬石変質からの解明-2006

    • Author(s)
      清崎淳子, 田中佳奈, 田口幸洋, ほか
    • Journal Title

      日本地熱学会誌 28

      Pages: 284-297

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Variability in microbial community and venting chemistry in a sediment-hosted backarc hydrothermal system : Impacts of subseafloor phase-separation.2005

    • Author(s)
      Nakagawa, S. et al.
    • Journal Title

      FEMS Microbiology Ecology 54

      Pages: 141-155

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Sclerite formation in the hydrothermal-vent "scaly-foot" gastropod- possible control of iron sulfide biomeneralization by animal.2005

    • Author(s)
      Suzuki, Y. et al.
    • Journal Title

      Earth and Planetary Science Letters 242

      Pages: 39-50

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Tin-bearing chalcopyrite and platinum-bearing bismuthinite in the active Tiger chimney, Yonaguni Knoll IV seafloor hydrothermal system, South Okinawa Trough, Japan.2005

    • Author(s)
      Gena, K. et al.
    • Journal Title

      Okayama University Earth Science Reports 12

      Pages: 1-5

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Variability in microbial community and venting chemistry in a sediment-hosted backarc hydrothermal system : Impacts of subseafloor phase-separation.2005

    • Author(s)
      Nakagawa S. et al.
    • Journal Title

      FEMS Microbiology Ecology 54

      Pages: 141-155

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Sclerite formation in the hydrothermal-vent "scaly-foot" gastropod-possible control of iron sulfide biomeneralization by animal.2005

    • Author(s)
      Suzuki Y. et al.
    • Journal Title

      Earth and Planetary Science Letters 242

      Pages: 39-50

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Tin-bearing chalcopyrite and platinum-bearing bismuthinite in the active Tiger chimney, Yonaguni, Knoll IV seafloor hydrothermal system, South Okinawa Trough, Japan.2005

    • Author(s)
      Gena K.et al.
    • Journal Title

      Okayama University Earth Science Reports 12

      Pages: 1-5

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Variability in microbial community and venting chemistry in a sediment-hosted backarc hydrothermal system : Impacts of subseafloor phase-separation.2005

    • Author(s)
      Nakagawa, S.
    • Journal Title

      FEMS Microbiology Ecology 54

      Pages: 141-155

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Sclerite formation in the hydrothermal-vent "scaly-foot" gastropod -possible control of iron sulfide biomeneralization by animal.2005

    • Author(s)
      Suzuki, Y.
    • Journal Title

      Earth and Planetary Science Letters 242

      Pages: 39-50

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Temperature and oxygen isotopic compositions of hydrothermal fluids for the Takatori Tungusten-Copper Deposit, Japan.2005

    • Author(s)
      Shibue, Y.
    • Journal Title

      Resource Geology 55

      Pages: 101-110

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The effect of plume processes on the Fe isotope composition of hydrothermally derived Fe in the deep ocean as inferred from the Rainbow vent site, Mid-Atlantic Ridge, 36゜14'N.2004

    • Author(s)
      S.Severmann et al.
    • Journal Title

      Earth and Planetary Science Letters 225

      Pages: 63-76

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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