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DOI	10.1038/s41561-022-00906-5
	Earth's Great Oxidation Event facilitated by the rise of sedimentary phosphorus recycling
	Alcott, Lewis J.; Mills, Benjamin J. W.; Bekker, Andrey; Poulton, Simon W.
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	210
结束页码	+
卷号	15 期号:3 页码:7
英文摘要	The rise of atmospheric oxygen during the Great Oxidation Event some 2.4 billion years ago was a defining transition in the evolution of global biogeochemical cycles and life on Earth. However, mild oxidative continental weathering and the development of ocean oxygen oases occurred several hundred million years before the Great Oxidation Event. The Great Oxidation Event thus represents a tipping point, whereby primary productivity and O-2 production overwhelmed the input of reduced species that consume O-2, and its timing is determined by the input of phosphate, the major limiting nutrient, and the dynamics of the solid Earth. Here, we determine the phase partitioning of phosphorus in 2.65 to 2.43 billion year old drill core samples from the Transvaal Supergroup, South Africa, to investigate the sequence of events that facilitated persistent atmospheric oxygenation. On the basis of the elevated C/P ratios found within sulfidic sediments, relative to the Redfield ratio, we suggest that, as oxidative continental weathering increased the influx of dissolved sulfate and hence dissolved sulfide in the oceans, bioavailable phosphorus became more abundant due to anoxic recycling of sedimentary phosphorus phases. Biogeochemical modelling indicates that this initiated a positive feedback on primary productivity and shows that the evolution of phosphorus recycling may have been a critical step that enabled Earth's transition to a persistently oxygenated atmosphere. Recycling of sedimentary phosphorus driven by increasing oceanic sulfide availability contributed to the persistent oxygenation of Earth's atmosphere, according to analysis of Archean drill-core samples and biogeochemical modelling
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000767886700011
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272638
作者单位	University of Leeds; University of California System; University of California Riverside; University of Johannesburg
推荐引用方式 GB/T 7714	Alcott, Lewis J.,Mills, Benjamin J. W.,Bekker, Andrey,et al. Earth's Great Oxidation Event facilitated by the rise of sedimentary phosphorus recycling[J],2022,15(3):7.
APA	Alcott, Lewis J.,Mills, Benjamin J. W.,Bekker, Andrey,&Poulton, Simon W..(2022).Earth's Great Oxidation Event facilitated by the rise of sedimentary phosphorus recycling.NATURE GEOSCIENCE,15(3),7.
MLA	Alcott, Lewis J.,et al."Earth's Great Oxidation Event facilitated by the rise of sedimentary phosphorus recycling".NATURE GEOSCIENCE 15.3(2022):7.