2013 Fiscal Year Final Research Report
Geochemical and mineralogical study for estimating past oxygen partial pressure from ancient cosmic spherules
| Project/Area Number |
23740378
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Geology
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| Research Institution | Kumamoto University (2013)
Kagoshima University (2011-2012) |
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Principal Investigator |
ONOUE Tetsuji 熊本大学, 自然科学研究科, 准教授 (60404472)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 宇宙塵 / 中生代 / 付加体 |
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| Research Abstract |
Cosmic spherules are subspherical to spherical particles of <1 mm diameter which are produced by melting of interplanetary dust and large objects during atmospheric entry. Although cosmic spherules are known principally from the ice sheets of polar regions and Cenozoic deep-sea sediments, a few spherules older than Mesozoic were recovered from the sedimentary rocks of pelagic limestone and radiolarian chert. The cosmic spheres from these sedimentary rocks contain atmospheric oxygen, and their final oxidation state is determined by the past oxygen content of the atmosphere. Systematic studies of ancient cosmic spherules in the sedimentary rocks could detect long-term changes in the past oxygen partial pressure of the atmosphere.
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Research Products
(32 results)
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[Journal Article] Deep-sea record of impact apparently unrelated to extinction in the Late Triassic2012
Author(s)
Onoue, T., Sato, H., Nakamura, T., Noguchi, T., Hidaka, Y., Shirai, N., Ebihara, M., Osawa, T., Hatsukawa, Y., Toh, Y., Koizumi, M., Harada, H., Orchard, M.J., Nedachi, M
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Journal Title
Proceedings of the National Academy of Sciences of the United States of America
Volume: 109
Pages: 19134-19139
Peer Reviewed
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[Journal Article] Early Triassic peritidal carbonate sedimentation on a Panthalassan seamount : The Jesmond succession, Cache Creek Terrane, British Columbia, Canada2012
Author(s)
Sano, H., Onoue, T., Orchard, M. J., Martini, R
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Journal Title
Facies
Volume: 58
Pages: 113-130
Peer Reviewed
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[Presentation] Meteorite impact, volcanism, and radiolarian faunal turnover recorded in the Upper Triassic of Japan2013
Author(s)
Onoue, T., Sato, H., Nozaki, T., Kuroda, J., Suzuki, K
Organizer
goldschmidt2013
Place of Presentation
Florence, Italy
Year and Date
2013-08-28
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[Presentation] Sedimentary record of a Late Triassic impact event in an ancient Pacific pelagic site : Manicouagan impact ejecta?2011
Author(s)
Onoue, T., Sato, H., Nakamura, T., Noguchi, T., Hatsukawa, Y., Osawa, T., Toh, Y., Koizumi, M., Orchard, M.J., Nedachi, M., Ebihara, M
Organizer
Canadian Paleontology Conference Proceedings 9
Year and Date
20110000
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[Presentation] Iridium anomaly, impact spherules, and Ni-rich spinels in an Upper Triassic (Norian) deep-sea deposit from Japan2011
Author(s)
Sato, H., Onoue, T., Nakamura, T., Noguchi, T., Hatsukawa, Y., Osawa, T., Toh, Y., Koizumi, M., Orchard, M., Nedachi, M., Ebihara, M
Organizer
Canadian Paleontology Conference Proceedings 9
Year and Date
20110000
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[Presentation] 美濃帯南部,上部トリアス系層状チャートからみつかったイリジウム異常,Ni に富むスピネル粒子,マイクロスフェルール2011
Author(s)
佐藤峰南,尾上哲治,中村智樹,野口高明,初川雄一,大澤崇人,藤暢輔,小泉光生
Organizer
日本地球惑星科学連合2011年大会
Place of Presentation
幕張メッセ
Year and Date
2011-05-24
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