干旱区生态环境知识资源中心(Arid): Onset of coupled atmosphere-ocean oxygenation 2.3 billion years ago

Arid

DOI	10.1038/s41586-024-07551-5
	Onset of coupled atmosphere-ocean oxygenation 2.3 billion years ago
	Ostrander, Chadlin M.; Heard, Andy W.; Shu, Yunchao; Bekker, Andrey; Poulton, Simon W.; Olesen, Kasper P.; Nielsen, Sune G.
通讯作者	Ostrander, CM
来源期刊	NATURE
ISSN	0028-0836
EISSN	1476-4687
出版年	2024
英文摘要	The initial rise of molecular oxygen (O2) shortly after the Archaean-Proterozoic transition 2.5 billion years ago was more complex than the single step-change once envisioned. Sulfur mass-independent fractionation records suggest that the rise of atmospheric O2 was oscillatory, with multiple returns to an anoxic state until perhaps 2.2 billion years ago1-3. Yet few constraints exist for contemporaneous marine oxygenation dynamics, precluding a holistic understanding of planetary oxygenation. Here we report thallium (Tl) isotope ratio and redox-sensitive element data for marine shales from the Transvaal Supergroup, South Africa. Synchronous with sulfur isotope evidence of atmospheric oxygenation in the same shales3, we found lower authigenic 205Tl/203Tl ratios indicative of widespread manganese oxide burial on an oxygenated seafloor and higher redox-sensitive element abundances consistent with expanded oxygenated waters. Both signatures disappear when the sulfur isotope data indicate a brief return to an anoxic atmospheric state. Our data connect recently identified atmospheric O2 dynamics on early Earth with the marine realm, marking an important turning point in Earth's redox history away from heterogeneous and highly localized 'oasis'-style oxygenation. The Great Oxidation Event represents a tipping point in Earth's O2 mass balance-when more O2 was being produced than destroyed-that forever changed the habitability of worldwide oceans.
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001259955400002
WOS关键词	TIMEBALL HILL FORMATION ; GREAT OXIDATION EVENT ; ISOTOPIC COMPOSITIONS ; TRANSVAAL SUPERGROUP ; SNOWBALL EARTH ; THALLIUM ; RISE ; SEDIMENTS ; URANIUM ; FRACTIONATION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404962
推荐引用方式 GB/T 7714	Ostrander, Chadlin M.,Heard, Andy W.,Shu, Yunchao,et al. Onset of coupled atmosphere-ocean oxygenation 2.3 billion years ago[J],2024.
APA	Ostrander, Chadlin M..,Heard, Andy W..,Shu, Yunchao.,Bekker, Andrey.,Poulton, Simon W..,...&Nielsen, Sune G..(2024).Onset of coupled atmosphere-ocean oxygenation 2.3 billion years ago.NATURE.
MLA	Ostrander, Chadlin M.,et al."Onset of coupled atmosphere-ocean oxygenation 2.3 billion years ago".NATURE (2024).