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DOI	10.1038/s41561-022-01071-5
	Formation of oxidized sulfur-rich magmas in Neoarchaean subduction zones
	Meng, Xuyang; Simon, Adam C.; Kleinsasser, Jackie M.; Mole, David R.; Kontak, Daniel J.; Jugo, Pedro J.; Mao, Jingwen; Richards, Jeremy P.
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	1064
结束页码	+
卷号	15 期号:12 页码:16
英文摘要	Oxidized, sulfur-rich arc magmas are ubiquitous in modern subduction-zone environments. These magmas are thought to form when the fluids released during prograde metamorphism of subducting oceanic crust and overlying sediments oxidize and hydrate the asthenospheric mantle. In contrast, Archaean arc-type magmas are thought to be relatively reduced and sulfur poor, owing to the lower concentrations of marine sulfate and limited oxidative seafloor alteration in the anoxic ocean before the Great Oxidation Event some 2.4 billion years ago (Ga). Here we measure the total sulfur concentration and relative abundances of S6+, S4+ and S2- in zircon-hosted apatite grains from sodic and potassic intrusive rocks from the similar to 2.7 Ga southeastern Superior Province, Canada. We find that, rather than being reduced and sulfur poor, the sulfur budget of the Neoarchaean magmas was dominated by S6+ and abruptly increased to concentrations comparable to Phanerozoic arc magmas following the interpreted onset of subduction at approximately 2.7 Ga, coincident with the first global pulse of crust generation. These findings indicate that oxidized, sulfur-rich magmas formed in subduction zones independent of ocean redox state and could have influenced oceanic-atmospheric and metallogenic evolution in the Neoarchaean.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000889417500001
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/272534
作者单位	Laurentian University; University of Michigan System; University of Michigan; Australian National University; University of Western Australia; China University of Geosciences
推荐引用方式 GB/T 7714	Meng, Xuyang,Simon, Adam C.,Kleinsasser, Jackie M.,et al. Formation of oxidized sulfur-rich magmas in Neoarchaean subduction zones[J],2022,15(12):16.
APA	Meng, Xuyang.,Simon, Adam C..,Kleinsasser, Jackie M..,Mole, David R..,Kontak, Daniel J..,...&Richards, Jeremy P..(2022).Formation of oxidized sulfur-rich magmas in Neoarchaean subduction zones.NATURE GEOSCIENCE,15(12),16.
MLA	Meng, Xuyang,et al."Formation of oxidized sulfur-rich magmas in Neoarchaean subduction zones".NATURE GEOSCIENCE 15.12(2022):16.