Geophysical and Geochemical Environment of Archean Biosphere
Project/Area Number |
18340174
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Petrology/Mineralogy/Science of ore deposit
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Research Institution | Kagoshima University |
Principal Investigator |
NEDACHI Munetomo Kagoshima University, 大学院・理工学研究科(理学系), 教授 (10107849)
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Co-Investigator(Kenkyū-buntansha) |
NEDACHI Youko 鹿児島純心女子大学, 看護栄養学部, 教授 (80290659)
ONOUE Tetsuji 鹿児島大学, 大学院・理工学研究科(理学系), 助教 (60404472)
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Project Period (FY) |
2006 – 2009
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Project Status |
Completed (Fiscal Year 2009)
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Budget Amount *help |
¥16,830,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2008: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2007: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2006: ¥8,900,000 (Direct Cost: ¥8,900,000)
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Keywords | ストロマトライト / 炭素同位体比 / バイオマーカー / 古地磁気 / 古環境 / 有機炭素の炭素同位体比 |
Research Abstract |
The research was driven using the cores from the Pilbara craton in Western Australia by ABDP (Archean Biosphere Drilling Project), to understand the evolution of Archean life and geochemical environment including geomagnetism. Paleomagnetic study suggests that the geomagnetic dynamo might behave at about 3.5Ga, and that the free oxygen level was very low and iron microbes oxidized ferrous to ferric, bereaving the charge of dissolved hydrion. The carbon from organisms in ferruginous Marble Bar Chert might be depleted during diagenesis. On the other hand, the high free oxygen level of 2.77Ga, is suggested from subsistence of cyanobacteria and sulfate reduction bacteria, but the level was not enough to oxidized magnetite to ferric compounds. The behavior of organic carbon and its isotopic ratio is not known yet, and should be expected in future study.
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Report
(6 results)
Research Products
(56 results)
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[Journal Article] Microfacies and depositional setting of the Upper Triassic mid-oceanic atoll-type carbonates of the Sambosan Accretionary Complex(southern Kyushu, Japan)2010
Author(s)
Chablais, J., Martini, R., Samankassou, E., Onoue, T., Sano, H.
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Journal Title
Related Report
Peer Reviewed
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[Journal Article] Hematite formation by oxygenated groundwater more than 2. 76 billion years ago.2009
Author(s)
Kato, Y., Suzuki, K., Nakamura, K., Hickman, A., Nedachi, M., Ohmoto, H.
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Journal Title
Earth and Planetary Science Letters 278
Pages: 40-49
Related Report
Peer Reviewed
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[Journal Article] Hematite formation by oxygenated groundwater more than 2.76 billion years ago2009
Author(s)
Kato,Y., Suzuki,K., Nakamura,K., Hickman,A., Nedachi,M. and Ohmoto,H.
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Journal Title
Earth and Planetary Science Letters 278
Related Report
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[Journal Article] Influence of submarine fumaroles on the distribution of mercury in the sediment of Kagoshima Bay, Japan.2007
Author(s)
Tomiyasu, T., Eguchi, T., Yamamoto, M., Anazawa, K., Ando, T., Nedachi, M., Marumo, K. Sakamoto, H.
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Journal Title
Marine Chemistry Vol.109
Pages: 173-183
Related Report
Peer Reviewed
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[Journal Article] Influence of submarine fumaroles on the distribution of mercury in the sediment of Kagoshima Bay, Japan2007
Author(s)
Tomiyasu,T., Eguchi,T., Yamamoto,M., Anazawa,K., Ando,T., Nedachi,M., Marumo,K. and Sakamoto,H.
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Journal Title
Marine Chemistry Vol.109
Pages: 173-183
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[Journal Article] Paleomagnetism of the Marble Bar Chert Member, Western Australia: Implications for apparent polar wander path for Pilbara craton during Archean time.2006
Author(s)
Suganuma, Y., Hamano, Y., Niitsuma, S., M. Hoashi, T. Hisamitsu, N. Niitsuma, Kodama, K, Nedachi, M.
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Journal Title
Earth and Planetary Science Letters Vol.252
Pages: 360-371
Related Report
Peer Reviewed
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[Journal Article] Paleomagnetism of the Marble Bar Chert Member, Western Australia : Implications for apparent polar wander path for Pilbara craton during rchean time2006
Author(s)
Suganuma,Y., Hamano,Y., Niitsuma, S., M.Hoashi, T.Hisamitsu, N.Niitsuma, Kodama, K and Nedachi, M.
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Journal Title
Earth and Planetary Science Letters Vol.252
Pages: 360-371
Related Report
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[Presentation] Cosmic spherules from Triassic deep-sea sediments in Japan2009
Author(s)
Onoue, T., Yasuda, C., Haranosono, T., Morita, K., Nakamura, T.
Organizer
Lunar and Planetary Science Conference
Place of Presentation
America, Houston
Year and Date
2009-03-26
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[Presentation] New Upper Triassic foraminifers of Sambosan Accretionary Complex (Japan) : A tool for sedimentological and paleobiogeog raphic understanding of the Panthalassa Ocean2008
Author(s)
Chablais, J., Martini, R., Rigaud, S., Samankassou, E., Onoue, T., Sano, H.
Organizer
International Geological Congress
Place of Presentation
Norway, Oslo
Year and Date
2008-08-09
Related Report
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[Presentation] Lithology of Triassic-Jurassic bedded chert in Dimanglet and Marinon Islands, North Palawan, Philippines.2008
Author(s)
Nikaido, T., Matsuoka, A., Onoue, T., Zamoras, L. R.
Organizer
International Geological Congress
Place of Presentation
Norway, Oslo
Year and Date
2008-08-08
Related Report
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[Presentation] Triassic-Jurassic radiolarian biostratigraphy in the Dimanglet Section, Calamian Islands, North Palawan Block, Philippines2008
Author(s)
Matsuoka, A., Nikaido, T., Onoue, T., Zamoras, L. R.
Organizer
日本地球惑星科学連合2008年大会
Place of Presentation
千葉市幕張メッセ国際会議場
Year and Date
2008-05-27
Related Report
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[Presentation] Lithology of Triassic-Jurassic bedded chert in Dimanglet and Marinon Islands2008
Author(s)
Nikaido, T., Matsuoka, A., Onoue, T., Zamoras,L.R.
Organizer
North Palawan, Philippines
Place of Presentation
IGC, Oslo, Norway
Related Report
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[Presentation] Triassic-Jurassic radiolarian biostratigraphy in the Dimanglet Section, Calamian Islands, North Palawan Block, Philippines2008
Author(s)
Matsuoka, A.,Nikaido, T., Onoue, T., Zamoras,L.R.
Organizer
日本地球惑星科学連合大会
Place of Presentation
千葉
Related Report
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