Osmium evidence for synchronicity between a rise in atmospheric oxygen and Palaeoproterozoic deglaciation

Yasuhito Sekine, Katsuhiko Suzuki, Ryoko Senda, Kosuke T. Goto, Eiichi Tajika, Ryuji Tada, Kazuhisa Goto, Shinji Yamamoto, Naohiko Ohkouchi, Nanako O. Ogawa, Teruyuki Maruoka

研究成果: ジャーナルへの寄稿記事

8 引用 (Scopus)

抄録

Early Palaeoproterozoic (2.5ĝ€"2.0 billion years ago) was a critical phase in Earth's history, characterized by multiple severe glaciations and a rise in atmospheric O 2 (the Great Oxidation Event). Although glaciations occurred at the time of O 2 increase, the relationship between climatic and atmospheric transitions remains poorly understood. Here we report high concentrations of the redox-sensitive element Os with high initial 187 Os/ 188 Os values in a sandstoneĝ€"siltstone interval that spans the transition from glacial diamictite to overlying carbonate in the Huronian Supergroup, Canada. Together with the results of Re, Mo and S analyses of the sediments, we suggest that immediately after the second Palaeoproterozoic glaciation, atmospheric O 2 levels became sufficiently high to deliver radiogenic continental Os to shallow-marine environments, indicating the synchronicity of an episode of increasing O 2 and deglaciation. This result supports the hypothesis that climatic recovery from the glaciations acted to accelerate the Great Oxidation Event.

元の言語英語
記事番号502
ジャーナルNature communications
2
発行部数1
DOI
出版物ステータス出版済み - 11 2 2011
外部発表Yes

Fingerprint

Osmium
osmium
Carbonates
Oxidation-Reduction
Canada
History
Oxygen
Oxidation
oxygen
Sandstone
marine environments
Sediments
oxidation
Earth (planet)
sandstones
Recovery
carbonates
sediments
recovery
histories

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

これを引用

Osmium evidence for synchronicity between a rise in atmospheric oxygen and Palaeoproterozoic deglaciation. / Sekine, Yasuhito; Suzuki, Katsuhiko; Senda, Ryoko; Goto, Kosuke T.; Tajika, Eiichi; Tada, Ryuji; Goto, Kazuhisa; Yamamoto, Shinji; Ohkouchi, Naohiko; Ogawa, Nanako O.; Maruoka, Teruyuki.

:: Nature communications, 巻 2, 番号 1, 502, 02.11.2011.

研究成果: ジャーナルへの寄稿記事

Sekine, Y, Suzuki, K, Senda, R, Goto, KT, Tajika, E, Tada, R, Goto, K, Yamamoto, S, Ohkouchi, N, Ogawa, NO & Maruoka, T 2011, 'Osmium evidence for synchronicity between a rise in atmospheric oxygen and Palaeoproterozoic deglaciation', Nature communications, 巻. 2, 番号 1, 502. https://doi.org/10.1038/ncomms1507
Sekine, Yasuhito ; Suzuki, Katsuhiko ; Senda, Ryoko ; Goto, Kosuke T. ; Tajika, Eiichi ; Tada, Ryuji ; Goto, Kazuhisa ; Yamamoto, Shinji ; Ohkouchi, Naohiko ; Ogawa, Nanako O. ; Maruoka, Teruyuki. / Osmium evidence for synchronicity between a rise in atmospheric oxygen and Palaeoproterozoic deglaciation. :: Nature communications. 2011 ; 巻 2, 番号 1.
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