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DOI	10.1016/j.epsl.2021.116902
	Cryogenian interglacial greenhouse driven by enhanced volcanism: Evidence from mercury records
	Zhou T.; Pan X.; Sun R.; Deng C.; Shen J.; Kwon S.Y.; Grasby S.E.; Xiao J.; Yin R.
发表日期	2021
ISSN	0012821X
卷号	564
英文摘要	An ice-free greenhouse interval (ca. 660 ∼ 650 Ma) occurred between the global Sturtian (ca. 717 Ma ∼ 660 Ma) and Marinoan glaciation (ca. 650 Ma ∼ 635 Ma) during the Cryogenian. While volcanic CO2 emissions have been suggested as a trigger for this ice-free interval, evidence for volcanism has been lacking. In this study, spikes in both Hg concentration (76 to 366 ppb) and Hg to total organic carbon ratio (Hg/TOC: 114 to 717 ppb/wt.%) were observed in the Wuhe section of South China, suggesting that extensive volcanic emissions of Hg occurred during the Cryogenian interglacial period. Positive Δ199Hg (0.02 to 0.18‰) values were observed in these Hg-rich shales, indicating that the volcanic Hg was cycling in the atmosphere, deposited in seawater, and sequestered to sediment via organic matter burial. Combined with other geochemical proxies (e.g., organic carbon isotope and chemical index of alteration), our results provide the first direct evidence that volcanism played a key role in forming the brief Cryogenian interglacial period. © 2021 Elsevier B.V.
关键词	Cyrogenian interglacial interval greenhouse Hg isotopes neoproterozoic volcanism
英文关键词	Glacial geology; Greenhouses; Mercury (metal); Organic carbon; Volcanoes; CO$-2$/ emission; Cryogenian; Cyrogenian interglacial interval; Hg concentrations; Hg isotope; Interglacial periods; Marinoan; Neoproterozoic; Volcanics; Volcanism; Isotopes; chemostratigraphy; concentration (composition); glaciation; greenhouse gas; interglacial; mercury (element); paleoenvironment; Proterozoic; volcanism; China; Elliptio dilatata
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203376
作者单位	State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China; University of Chinese Academy of Sciences, Beijing, 100049, China; State Key Laboratory of Geological Processes and Mineral Resources, China, University of Geosciences, Wuhan, 430074, China; Division of Environmental Science and Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam Gu, Pohang, 37673, South Korea; Geological Survey of Canada, Calgary Natural Resources Canada, 3303 33rd Street NW, Calgary, AB T2L 2A7, Canada
推荐引用方式 GB/T 7714	Zhou T.,Pan X.,Sun R.,et al. Cryogenian interglacial greenhouse driven by enhanced volcanism: Evidence from mercury records[J],2021,564.
APA	Zhou T..,Pan X..,Sun R..,Deng C..,Shen J..,...&Yin R..(2021).Cryogenian interglacial greenhouse driven by enhanced volcanism: Evidence from mercury records.Earth and Planetary Science Letters,564.
MLA	Zhou T.,et al."Cryogenian interglacial greenhouse driven by enhanced volcanism: Evidence from mercury records".Earth and Planetary Science Letters 564(2021).