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- Alan D. Rooney
- Department of Earth and Planetary Sciences, Yale University, New Haven, CT 06520;
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- Marjorie D. Cantine
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139;
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- Kristin D. Bergmann
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139;
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- Irene Gómez-Pérez
- Petroleum Development Oman, Exploration Directorate, Muscat 100, Oman;
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- Badar Al Baloushi
- Petroleum Development Oman, Exploration Directorate, Muscat 100, Oman;
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- Thomas H. Boag
- Department of Geological Sciences, Stanford University, Stanford, CA 94305;
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- James F. Busch
- Department of Earth Sciences, Dartmouth College, Hanover, NH 03755
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- Erik A. Sperling
- Department of Geological Sciences, Stanford University, Stanford, CA 94305;
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- Justin V. Strauss
- Department of Earth Sciences, Dartmouth College, Hanover, NH 03755
書誌事項
- 公開日
- 2020-07-06
- 権利情報
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- https://www.pnas.org/site/aboutpnas/licenses.xhtml
- DOI
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- 10.1073/pnas.2002918117
- 公開者
- Proceedings of the National Academy of Sciences
この論文をさがす
説明
<jats:title>Significance</jats:title> <jats:p>Our understanding of the interactions between animal evolution, biogeochemical cycling, and global tectonics during the Ediacaran Period (635 to 541 Ma) is severely hampered by lack of a robust temporal framework. The appearance and extinction of the earliest fossil animals are hypothesized to correlate with upheavals in biogeochemical cycles—foremost the Shuram carbon isotope excursion, possibly the largest known disturbance to the global carbon cycle. However, without age constraints on the excursion’s timing and duration, its driving mechanisms, global synchroneity, and role in Ediacaran geobiological evolution cannot be evaluated. We provide radioisotopic ages for the onset and termination of the Shuram, evaluate its global synchroneity, and show that it is divorced from the rise of the earliest preserved animal ecosystems.</jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 117 (29), 16824-16830, 2020-07-06
Proceedings of the National Academy of Sciences
