Reconstruction of sub-bottom section of geologic methane-seep site - variety of seep activity indicated by fossil chemosynthetic communities
Project/Area Number |
23540548
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Stratigraphy/Paleontology
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Research Institution | Shizuoka University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
IJIRI Akira 独立行政法人海洋研究開発機構, 高知コア研究所, 研究員 (70374212)
ISHIMURA Toyoho 茨城工業高等専門学校, 物質工学科, 准教授 (80422012)
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Co-Investigator(Renkei-kenkyūsha) |
MAJIMA Ryuichi 横浜国立大学, 教育人間科学部, 教授 (30202310)
KONDO Yasuo 高知大学, 理学部, 教授 (90192583)
AMANO Kazutaka 上越教育大学, 学校教育研究科, 教授 (50159456)
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Research Collaborator |
JENKINS Robert 金沢大学, 理工研究域自然システム学系, 助教 (10451824)
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Project Period (FY) |
2011 – 2013
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Project Status |
Completed (Fiscal Year 2013)
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Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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Keywords | 化学合成生態系 / メタン湧水 / 深海生態系 / 古生態学 / 層位・古生物学 / 深海生物 / 白亜紀 / 新生代 / 進化 / 海洋生態 |
Research Abstract |
This study made clear sub-bottom cross-sections of the geological past methane-seep sites in the Eocene Poronai Formation and the Miocene Morai Formation, both of which are bathyal siltstones yielding abundant vesicomyid fossils in Hokkaido, north Japan. Detail observations of their mode of fossil occurrences and seep-carbonate blocks (scale, shape, petrology, and internal textures) indicate that the two seep-sites are contrast in style of seepage activity. The Poronai seep is channelized focused-flow characterized by its fractured lithology due to fluid overpressure, whereas the Morai seep is diffusive and static through interspaces of clotted-mud, without such fracturing texture. These results show that chemosynthetic vesicomyid clams have utilized both types of seepage. This is related with their high mobility in semi-infaunal life position, which can provide a key to solve the question: why they have made success and flourish in the post-Cretaceous age.
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Report
(4 results)
Research Products
(34 results)
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[Journal Article] Increase in acetate concentrations during sediment sample onboard storage: a caution for pore-water geochemical analyses2013
Author(s)
Ijiri, A., Ohtomo, Y., Morono, Y., Ikehara, M., and Inagaki, F.
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Journal Title
GEOCHEMICAL JOURNAL
Volume: 47
Issue: 5
Pages: 567-571
DOI
NAID
ISSN
0016-7002, 1880-5973
Related Report
Peer Reviewed
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[Journal Article] Variation in stable carbon and oxygen isotopes of individual benthic foraminifera: tracers for quantifying the magnitude of isotopic disequilibrium.2012
Author(s)
Ishimura, T., Tsunogai, U., Hasegawa, S., Nakagawa, F., Oi, T., Kitazato, H., Suga, H., Toyofuku, T.
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Journal Title
Biogeosciences
Volume: 9
Issue: 11
Pages: 4353-4367
DOI
Related Report
Peer Reviewed
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[Journal Article] Biogeochemical processes involving acetate in sub-seafloor sediments from the Bering Sea shelf break2012
Author(s)
Ijiri, A., Harada, N., Hirota, A., Tsunogai, U., Ogawa, N.O., Itaki, T., Khim, B-K., Uchida, M
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Journal Title
Organic Geochemistry
Volume: 48
Pages: 47-55
Related Report
Peer Reviewed
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[Presentation] 沖縄トラフ伊平屋熱水域の炭素循環2013
Author(s)
井尻 暁, 今野祐多, 川口慎介, 稲垣史生, 高井 研
Organizer
日本地球惑星科学連合2013年大会
Place of Presentation
幕張メッセ国際会議場, 千葉県
Year and Date
2013-05-22
Related Report
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[Presentation] NT10-19 Leg2 の調査概要:海底下を包含したメタン湧水生態系の解明を目指して2011
Author(s)
ジェンキンズロバート, 野崎 篤, 宇都宮正志, 佐藤 圭, 延原尊美, 渡部裕美, 小栗一将, 清家弘治, カイム・アンドレイ, 佐藤瑞穂, 高橋正樹, 沼田章吾, 三本菅優作, 新谷美久帆, 坂井三郎
Organizer
日本地球惑星科学連合2011年大会
Place of Presentation
幕張メッセ国際会議場, 千葉県
Year and Date
2011-05-22
Related Report
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[Presentation] NT10-19 Leg2 の調査概要:海底下を包含したメタン湧水生態系の解明を目指して2011
Author(s)
ジェンキンズロバート, 野崎 篤, 宇都宮正志, 佐藤 圭, 延原尊美, 渡部裕美, 小栗一将, 清家弘治, カイム・アンドレイ, 佐藤瑞穂, 高橋正樹, 沼田章吾, 三本菅優作, 新谷美久帆, 坂井三郎
Organizer
日本地球惑星科学連合2011年大会
Place of Presentation
幕張メッセ国際会議場,千葉県
Related Report
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