2013 Fiscal Year Final Research Report
Warming pulse triggered by CO2 released during LIP formation: evaluating 20 kyr event during Cretaceous OAE2
| 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)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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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 |
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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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Author(s)
Li, G., Ando, H., Hasegawa, H., Yamamoto, M., Hasegawa, T., Ohta, T., Hasebe, N. & Ichinnorov, N.
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Journal Title
Alcheringa
Volume: vol. 38
DOI
Peer Reviewed
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[Journal Article] Strontium and carbon isotope stratigraphy of the Late Jurassic shallow marine limestone in western Palaeo-Pacific, northwest Borneo2013
Author(s)
Kakizaki,Y., Weissert,H. J., Hasegawa, T., Ishikawa, T., Matsuoka, J. and Kano, A.
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Journal Title
Journal of Asian Earth Sciences
Volume: 73
Pages: 57-67
DOI
Peer Reviewed
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[Journal Article] Carbon isotope stratigraphy and depositional oxia through Cenomanian/Turonian boundary sequences (Upper Cretaceous) in New Zealand2013
Author(s)
Hasegawa, T., Crampton, J., Schiøler, P., Field, B., Fukushi, K. Kakizaki, Y.
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Journal Title
Cretaceous Research
Volume: 40
Pages: 61-80
DOI
Peer Reviewed
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[Presentation] Diversity of n-alkenes in the haptophyte algae - A possible hydrocarbon resource2013
Author(s)
Nakamura, H., Sawada, K., Kanou,C., Araie, H., Suzuki, I., Shiraiwa, Y.
Place of Presentation
Costa Adeje (Tenerife), Spain
Year and Date
20130918-19
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