2012 Fiscal Year Final Research Report
Mo/W ratio as proxy for reconstruction of paleoredox conditions; Implication of sediments of the hypersaline Meedee Lake in the eastern Mediterranean Sea
| Project/Area Number |
22540478
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | Kochi University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SOHRIN Yoshiki 京都大学, 化学研究所, 教授 (50197000)
KITAZATO Hiroshi 海洋研究開発機構, 極限環境生物圏領域, 領域長 (00115445)
TOKUYAMA Hidekazu 高知大学, 海洋コア総合研究センター, 特任教授 (10107451)
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| Project Period (FY) |
2010 – 2012
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| Keywords | モリブデン / タングステン / 酸化還元プロクシ / 地中海 / 塩水湖 / 海洋コア |
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| Research Abstract |
In order to grasp information and preservation status in deep hypersaline anoxic basins such as the Meedee Lake in the eastern Mediterranean Sea, a sediment core (3 m length) was recovered using special NSS sampling system. Drastic color changes in this sediment indicate that the depositional environment has been changed drastically such as oxic and anoxic conditions during the last 200 kyrs. Here we have validated the evidence of Mo/W ratio as proxy for reconstruction of paleoredox conditions. Specially, redox conditions appear to influence microfauna composition, highlighting the role of the redox state as a regulator of organic matter preservation and microfauna accumulations in this ancient hypersaline anoxic lake
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Research Products
(15 results)
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[Journal Article] The Molybdenum Isotopic Composition of the Modern Ocean2012
Author(s)
Nakagawa, Y., Takano, S., Firdaus, M. L., Norisuye, K., Hirata, T., Vance, D., Sohrin, Y.
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Journal Title
Geochem. J
Volume: 46
Pages: 131-141
Peer Reviewed
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[Journal Article] Piston and multiple core works (group report)2010
Author(s)
Kato, Y., Murayama, M., Minami, H., Yamada, Y., Sakamoto, M., Toyomura, K., Sakamoto, T
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Journal Title
KH09-5 Cruise Report, Ocean Research Institute, Univ. of Tokyo
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[Presentation] Deposition and transportation processes of organic materials along shelf to slope off Shikoku, southwestern Japan, inferred from stable and radioactive carbon isotope2011
Author(s)
Murayama, M., Toyomura, K., Saka, K., Horikawa, K., Narita, H., Kato, Y
Organizer
7th International Conference on Asian Marine Geology
Place of Presentation
Goa (India)
Year and Date
20111011-14
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[Presentation] KH06-5次航海乗船研究者一同, 地中海から発見された塩水湖堆積物から復元する酸化-還元状態2011
Author(s)
村山雅史,泉谷直希 ,森島唯 ,西田真輔 ,中川裕介,宗林由樹,佐川拓也,朝日博史,北里洋,千代延俊
Organizer
日本古生物学会
Place of Presentation
高知大学(高知県)
Year and Date
20110128-30
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[Presentation] KH06-4 Leg.6 Research Group, Oxic and anoxic environments in the brine" MeedeeLake"the eastern Mediterranean Sea and its paleoceanographic significance2010
Author(s)
Murayama, M., Izumitani, N., Sagawa, T., Ikehara, M., Asahi, H., Nakamura, Y., Shirai, M., Ashi, J., Tokyuyama, H.and Chiyonobu, S
Organizer
10th International Conference on Paleoceanography
Place of Presentation
University of California, San Diego, California (USA).
Year and Date
20100829-0903
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[Presentation] KH06-4 Leg.6研究者一同, 東地中海の塩水湖(Meedeelake)より採取された海洋コアの堆積環境の解明2010
Author(s)
泉谷直希, 村山雅史, 佐川拓也, 池原実, 朝日博史, 中村恭之, 白井正明, 芦寿一郎,徳山英一, 北里洋
Organizer
日本地球惑星科学連合大会
Place of Presentation
幕張メッセ(千葉県)
Year and Date
20100525-30
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