globalchange  > 气候变化事实与影响
Scopus记录号: 2-s2.0-85062609694
论文题名:
Methanogenesis sustained by sulfide weathering during the Great Oxidation Event
作者: Wang S.-J.; Rudnick R.L.; Gaschnig R.M.; Wang H.; Wasylenki L.E.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2019
语种: 英语
英文摘要: The Great Oxidation Event following the end of the Archaean eon (~2.4 Ga) was a profound turning point in the history of Earth and life, but the relative importance of various contributing factors remains an intriguing puzzle. Controls on methane flux to the atmosphere were of particular consequence; too much methane would have inhibited a persistent rise of O 2 , but too little may have plunged Earth into severe and prolonged ice ages. Here, we document a shift in the weathering reactions controlling the ocean-bound flux of nickel—an essential micronutrient for the organisms that produced methane in Precambrian oceans—by applying Ni stable isotope analysis to Mesoarchaean and Palaeoproterozoic glacial sediments. Although Ni flux to the ocean dropped dramatically as Ni content of the continental crust decreased, the onset of sulfide weathering delivered a small, but vital, flux of Ni to the oceans, sustaining sufficient methane production to prevent a permanent icehouse, while allowing O 2 to rise. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122620
Appears in Collections:气候变化事实与影响

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作者单位: State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing, China; Department of Earth Science, University of California, Santa Barbara, CA, United States; Earth Research Institute, University of California, Santa Barbara, CA, United States; Department of Geology, University of Maryland, College Park, MD, United States; Department of Environmental, Earth and Atmospheric Sciences, University of Massachusetts Lowell, Lowell, MA, United States; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China; School of Earth and Sustainability, Northern Arizona University, Flagstaff, AZ, United States; Department of Chemistry and Biochemistry, Northern Arizona University, Flagstaff, AZ, United States

Recommended Citation:
Wang S.-J.,Rudnick R.L.,Gaschnig R.M.,et al. Methanogenesis sustained by sulfide weathering during the Great Oxidation Event[J]. Nature Geoscience,2019-01-01
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