Response of marine organisms to the Triassic/Jurassic boundary event in the Panthalassa region
Project/Area Number |
24740348
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Stratigraphy/Paleontology
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Research Institution | Meiji University (2014) Niigata University (2012-2013) |
Principal Investigator |
ISHIDA Naoto 明治大学, 研究・知財戦略機構, 講師 (20534746)
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Research Collaborator |
NAOKO Kishimoto 摂南大学, 理工学部, 准教授 (60450714)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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Keywords | 三畳紀/ジュラ紀境界 / 生物大量絶滅 / パンサラッサ / 放散虫化石 / マイクロCT / 三次元形態解析 |
Outline of Final Research Achievements |
The Triassic-Jurassic (T/J) boundary is famous for the mass extinction event due to the activity of CAMP (Central Atlantic Magmatic Province) volcanism. This study tried to detect influences of the event in the Panthalassa region. In the T/J transition of hemipelagic succession in the Hashirimizu Complex, which is one of the Early Jurassic accretionary complexes in Southwest Japan, anomalous low-diversified radiolarian assemblages were recovered. These assemblage mostly dominated by species belonging to the family Canoptidae are known as “Canoptum assemblage”. The relationship between the activity of CAMP volcanism and the low-diversified assemblages is still unclear. Although there is no appropriate record for the regional occurrences of the Canoptum assemblage, one plausible cause of the low diversity is an inhibitor released from the accretionary complexes, such as dissociated methane hydrate, caused by an abrupt warming after the increase in CAMP volcanism.
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Report
(4 results)
Research Products
(15 results)
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[Journal Article] Three-dimensional imaging of the Jurassic radiolarian Protunuma (?) ochiensis Matsuoka: an experimental study using high-resolution X-ray micro-computed tomography2015
Author(s)
Ishida, N., Kishimoto, N., Matsuoka, A., Kimoto, K., Kurihara, T., Yoshino, T.
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Journal Title
Volumina Jurassica
Volume: 13
Pages: 77-82
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Presentation] Microfossil research using 3D imaging technology: an experimental study of Jurassic radiolarians using X-ray micro-computed tomography2014
Author(s)
Ishida, N., Kishimoto, N., Matsuoka, A., Kimoto, K., Kurihara, T., Yoshino, T.
Organizer
The 9th International Congress on the Jurassic system
Place of Presentation
Birla Auditorium, Jaipur, India
Related Report
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[Presentation] Microfossil research using 3D imaging technology: an experimental study of radiolarians using X-ray micro-computed tomography2013
Author(s)
Ishida, N., Kishimoto, N., Matsuoka, A., Kimoto, K., Kurihara, T., Yoshino, T.
Organizer
The 3rd International Congress on Natural Sciences with Sisterhood Universities
Place of Presentation
Niigata University, Niigata, Japan
Related Report
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