| Project/Area Number |
23340158
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | Kanazawa University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SAWADA Ken 北海道大学, 理学研究院, 准教授 (20333594)
森下 知晃 金沢大学, 自然システム学系, 教授 (80334746)
福士 圭介 金沢大学, 環日本海域環境研究センター, 助教 (90444207)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
Fiscal Year 2013: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2012: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2011: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
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| Keywords | 海洋無酸素事変 / ＯＡＥ２ / バイオマーカー / 古環境 / 環境変動 / 白亜紀 / 蝦夷層群 / 国際情報交換 / 白亜系 / ＯＡＥ / 炭素同位体比 / 地質学 / OAE / セニマニアン / チューロニアン / セノマニアン / OAE2 |
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| Research Abstract |
Cretaceous Cenomanian/Turonian boundary is known as a period of Oceanic Anoxic Event 2 (OAE2). During OAE2, large amount of organic matter deposited over extended sea bottom of the global oceans, and considerable climatic change associated with the disturbance of carbon cycles are under debate. From the Yezo Group in Hokkaido, stratigraphic studies with exclusively high resolution suggested that strong environmental perturbation happened within duration of twenty thousand years. We focused on that event (NSP) and studied biomarkers (organic molecular fossils), especially compound-specific carbon isotope values on biomarkers derived from terrestrial higher plants. Our results showed short term climatic change prevailed just before NSP over terrestrial East Asia during OAE2 interval.
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