Causal linkage between massive magmatism of Ontong Java Plateau and Oceanic Anoxic Events based on Pb isotopic records

• Project/Area Number: 19740321
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Stratigraphy/Paleontology
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: KURODA Junichiro Japan Agency for Marine-Earth Science and Technology, 地球内部変動研究センター, 研究員 (10435836)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,630,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥330,000); Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2007: ¥2,200,000 (Direct Cost: ¥2,200,000)
• Keywords: 海洋無酸素事変 / 巨大火成岩区 / 鉛同位体 / 白亜紀 / 鉛同位体比

Research Abstract

本研究は、前期白亜紀に起きた海洋無酸素事変OAE-1aと地球最大の洪水玄武岩オントンジャワ海台の形成に関連あるかどうかを、堆積岩の鉛同位体組成という新しい指標を用いて検討した。その結果、1)OAE-1aが始まる数十万年前に陸上噴火が、2)OAE-1aと同時期に大規模な海底火山活動が起きたことを明らかにした。前者は世界規模の海洋生物の群集組成変化に、後者は海洋無酸素化や海洋酸性化の時期と一致している。本研究は、様式の異なる2回の大規模火山活動が、それぞれ海洋生物・環境イベントに関連したことを明らかにした点が画期的である。

Research Products

• [Journal Article] Ontong Java Plateau eruption as a trigger for the Early Aptian oceanic anoxic event (2009)
  • Author(s): Maria L. G. Tejada, Katsuhiko Suzuki, Junichiro Kuroda, Rodolfo Coccioni, John J. Mahoney, Naohiko Ohkouchi, Tatsuhiko Sakamoto, Yoshiyuki Tatsumi
  • Journal Title: Geology 2009(採録決定済)
  • Peer Reviewed
• [Journal Article] Ontong Java Plateau eruption as a trigger for the Early Aptian oceanicanoxic event (2009)
  • Author(s): M. L. G Tejada
  • Journal Title: Geology (印刷中)
  • Peer Reviewed
• [Journal Article] Diazotrophic cyanobacteria as the major photoautotrophs during mid-Cretaceous oceanic anoxic events : Nitrogen and carbon isotopic evidence from sedimentary porphyrin (2008)
  • Author(s): Yuichiro Kashiyama, Nanako O. Ogawa, Junichiro Kuroda, Motoo Shiro, Shinya Nomoto, Ryuji Tada, Hiroshi Kitazato, Naohiko Ohkouchi
  • Journal Title: Organic Geochemistry vol. 39 Pages: 532-549
  • Peer Reviewed
• [Journal Article] Diazotrophic cyanobacteria as the major photoautotrophs during mid-Cretaceous oceanic anoxic events (2008)
  • Author(s): Y. Kashiyama
  • Journal Title: Organic Geochemistry 39 Pages: 532-549
  • Peer Reviewed
• [Journal Article] Diazotrophic cyanobacteria as the major photoautotrophs during mid-Cretaceous oceanic anoxic events (2008)
  • Author(s): Y. Kashiyama
  • Journal Title: Organic Geochemistry (印刷中)
  • Peer Reviewed
• [Journal Article] Contemporaneous massive subaerial volcanism and Late Cretaceous oceanic anoxic event 2 (2007)
  • Author(s): Junichiro Kuroda, Nanako O. Ogawa, Masaharu Tanimizu, Millard F. Coffin, Hidekazu Tokuyama, Hiroshi Kitazato, Naohiko Ohkouchi
  • Journal Title: Earth and Planetary Science Letters vol. 256 Pages: 211-223
  • Peer Reviewed
• [Journal Article] Contemporaneous massive subaerial volcanism and late Cretaceous Oceanic Anoxic Event 2 (2007)
  • Author(s): J. Kuroda
  • Journal Title: Earth and Planetary Science Letters 256 Pages: 211-223
  • Peer Reviewed
• [Journal Article] The importance of diazotrophic cyanobacteria as primary producers during Cretaceous Oceanic Anoxic Event 2 (2006)
  • Author(s): Naohiko Ohkouchi, Yuichiro Kashiyama, Junichiro Kuroda, Nanako O. Ogawa, Hiroshi Kitazato
  • Journal Title: Biogeosciences vol. 3 Pages: 575-605
  • Peer Reviewed
• [Presentation] Volcanism of the Ontong Java Plateau recorded in the Early Aptian pelagic sediments and its implication as a trigger of Aptian Oceanic Anoxic Event (2008)
  • Author(s): J. Kuroda
  • Organizer: American Geophysical Union 2008 Fall Meeting
  • Place of Presentation: 米国・サンフランシスコ
  • Year and Date: 2008-12-19
• [Presentation] Volcanism of the Ontong Java Plateau recorded in the Early Aptian pelagic sediments and its implication as a trigger of Aptian Oceanic Anoxic Event (2008)
  • Author(s): Junichiro Kuroda
  • Organizer: American Geophysics Union 2008 Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2008-12-18
• [Presentation] 海洋堆積物のオスミウム、鉛、炭素同位体比にもとづく白亜紀の古環境変動研究 (2008)
  • Author(s): 黒田潤一郎
  • Organizer: 日本地球化学会2008年度年会
  • Place of Presentation: 東京
  • Year and Date: 2008-09-19
• [Presentation] 海洋堆積物のオスミウム、鉛、炭素同位体比にもとづく白亜紀の古環境変動研究 (2008)
  • Author(s): 黒田潤一郎
  • Organizer: 日本地質学会第114年学術大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2008-09-19
• [Presentation] Volcanism of the Ontong Java Plateau recorded in the Early Aptian pelagic sediments and its implication as a trigger of the Early Aptian Oceanic Anoxic Event (OAE-1a) (2008)
  • Author(s): Junichiro Kuroda
  • Organizer: 6th International Conference on Asian Marine Geology
  • Place of Presentation: Kochi, Japan
  • Year and Date: 2008-09-01
• [Presentation] Volcanism of the Ontong Java Plateau recorded in the Early Aptian pelagic sediments and its implication as a trigger of the Early Aptian Oceanic Anoxic Event (OAE-1a) (2008)
  • Author(s): J. Kuroda
  • Organizer: 6th International Conference on Asian Marine Geology (ICAMG-6)
  • Place of Presentation: 高知工科大学
  • Year and Date: 2008-09-01
• [Presentation] 微量元素の同位体変動から見た白亜紀海洋無酸素イベント (2008)
  • Author(s): 黒田潤一郎
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉
  • Year and Date: 2008-05-28
• [Presentation] 微量元素の同位体変動から見た白亜紀海洋無酸素イベント (2008)
  • Author(s): 黒田潤一郎
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 千葉幕張メッセ
  • Year and Date: 2008-05-27
• [Presentation] NanoSIMSを用いた堆積岩有機物の炭素同位体比、C/N比測定-白亜紀黒色頁岩の分析例と今後の課題- (2008)
  • Author(s): 黒田 潤一郎
  • Organizer: 古海洋学シンポジウム
  • Place of Presentation: 東京大学海洋研究所
  • Year and Date: 2008-01-07
• [Presentation] アプチアンの海洋無酸素イベント堆積物の炭素・鉛・オスミウム同位体から読み取る火山活動の記録 (2007)
  • Author(s): 黒田潤一郎
  • Organizer: 日本地質学会第114年学術大会
  • Place of Presentation: 札幌
  • Year and Date: 2007-09-09
• [Presentation] アプチアンの海洋無酸素イベント堆積物の炭素・鉛・オスミウム同位体から読み取る火山活動の記録 (2007)
  • Author(s): 黒田 潤一郎
  • Organizer: 日本地質学会第114年学術大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-09
• [Presentation] Massive volcanism associated with LIP emplacements as a potential cause of Cretaceous Oceanic Anoxic Event (2007)
  • Author(s): Junichiro Kuroda
  • Organizer: Large Igneous Province Workshop (IODP International Workshop)
  • Place of Presentation: Colerain, UK
  • Year and Date: 2007-07-24
• [Presentation] Massive volcanism associated with LIP emplacements as a potential cause of Cretaceous Oceanic Anoxic Event (2007)
  • Author(s): J. Kuroda
  • Organizer: Large Igneous Province Workshop
  • Place of Presentation: 英国・コルレーン
  • Year and Date: 2007-07-24
• [Presentation] Carbon isotopic variation across the Livello Selli black shale : paleoenvironmental implications for the Early Aptian anoxic event (OAE-1a) (2007)
  • Author(s): Junichiro Kuroda
  • Organizer: European Geoscience Union General Assembly 2007
  • Place of Presentation: Wien, Austria
  • Year and Date: 2007-04-18
• [Presentation] Carbon isotopic variation across the Selli black shale:paleoen vitronmental implications for the Early Aptian anoxic event (2007)
  • Author(s): J. Kuroda
  • Organizer: European Geoscience Union (EGU) 2007 Annual Meeting
  • Place of Presentation: オーストリア・ウィーン
  • Year and Date: 2007-04-18