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2004 Fiscal Year Final Research Report Summary

Molecular paleontological research for the evolution of symbiosis of chanosynthetic biological community

Research Project

Project/Area Number 14540437
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Stratigraphy/Paleontology
Research InstitutionThe University of Tokyo

Principal Investigator

OGIHARA Shigenori  The University of Tokyo, Department of Earth and Planetary Science, Research Assistant, 大学院・理学系研究科, 助手 (50214044)

Project Period (FY) 2002 – 2004
Keywordsbiomarker / chemosynthetic community / methanogens / sulfate-reducing bacteria / methane seep / cold seep / carbonate rock
Research Abstract

Recent biomarker and isotopic studies indicated the participation of Archea in an anaerobic methane-oxidation (AOM) in the marine sediments. Authigenic carbonate precipitation was related to AOM which produces CO_2 and decreases pH, favoring the dissolution of carbonates rather than precipitation. Anaerobically oxidized methane produces the increase in alkalinity of carbonate and favors the precipitation of authigenic carbonates. The association of methane seepage on the sea floor and an oxidation of methane with carbonate precipitation was established on the basis of carbonate ^<13>C depletion. The cold-seep carbonates contain biomarkers suggesting the anaerobic methane-oxidation which play an important role during cold-seep carbonate precipitation. The most important diagnostic lipid compound for identifying AOM is ^<13>C depleted pentamethyleicosane (PME) and most likely crocetane Another useful compound to identify methane oxidizing Archea is ^<13>C depleted isoprenoid ether lipid or degradation product originated from ether-bound membrane lipids with an isoporenoid carbon skeleton.
Newly developed biomarker indicating AOM, especially ANME-2 (group of methanogens), is C13 and C18 isoprenoid ketone. The origin of isoprenoid ketone could be hydroxyarchaeol contained Methanosarcinaceae.
Biomarker indicating AOM was investigated from Pleistocene Koshiba formation, Recent sea-floor from Rishiri channel, five Cretaceous limestone from Hokkaido in this study. The Archeal spices related to AOM are multiple, biomarker is useful tool for distinguish AMNE-1 and ANME-2 in geological samples. The fossil chemosynthtic communities at the age of Lower Cretaceous are dominated ANME-1, and the samples from younger than Upper Cretaceous are dominated ANME-2. The combination of chemosynthetic community is evolving.

  • Research Products

    (12 results)

All 2004 2003 2002

All Journal Article (12 results)

  • [Journal Article] 東海沖竜洋海底谷より採取されたバクテリアマットに被覆される深海堆積物の脂質組成2004

    • Author(s)
      荻原成騎, 芦 寿一郎
    • Journal Title

      深海研究 24

      Pages: 25-36

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 冷湧水炭酸塩岩中のメタン酸化を示すバイオマーカー2004

    • Author(s)
      荻原成騎
    • Journal Title

      地球化学 38

      Pages: 45-55

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 稚内沖から採取された化学合成生物群集化石を含む炭酸塩クラストのバイオマーカー組成2004

    • Author(s)
      荻原成騎, 重田康成
    • Journal Title

      Res.Org.Geochem 19

      Pages: 21-30

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 深海堆積物中の高分枝イソプレノイド炭化水素:C25HBIとC30HBIのGC/MSによる解析2004

    • Author(s)
      荻原成騎
    • Journal Title

      Res.Org.Geochem 19

      Pages: 39-45

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Lipids composition in deep sea sediment covered by a bacterial mat collected from the Ryuyo Canyon, off Tokai2004

    • Author(s)
      S.Ogihara
    • Journal Title

      Deep Sea Res 24

      Pages: 25-36

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Biomarker composition for anaerobic methane oxidation in cold-seep carbonates2004

    • Author(s)
      S.Ogihara
    • Journal Title

      Geochemistry 38

      Pages: 45-55

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Biomarker composition of carbonate crust including fossil chemosynthetis-based community collected from off Wakkanai, northern Japan2004

    • Author(s)
      S.Ogihara
    • Journal Title

      Res.Organic Geochemistry 19

      Pages: 21-30

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Highly branched isoprenoid hydrocarbons in deep sea sediment2004

    • Author(s)
      S.Ogihara
    • Journal Title

      Res.Organic Geochemistry 19

      Pages: 39-45

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 黒島海丘におけるバクテリアマットの有機地球化学的研究2003

    • Author(s)
      荻原成騎, 松本 良, ロバート・ジェンキンス, 町山栄章
    • Journal Title

      深海研究 23

      Pages: 107-114

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Organic geochemical investigation of bacterial mat from Kuroshima Knoll2003

    • Author(s)
      S.Ogihara
    • Journal Title

      Deep Sea Res 23

      Pages: 107-114

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 黒島海丘におけるカーボネートチムニーの成因2002

    • Author(s)
      荻原成騎, 武内里香, 松本 良, 町山栄章
    • Journal Title

      深海研究 19

      Pages: 13-17

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] The origin of carbonate chimney at the Kuroshima Knoll2002

    • Author(s)
      S.Ogihara
    • Journal Title

      Deep Sea Res 19

      Pages: 13-17

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2006-07-11  

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