气候变化领域集成服务门户(CCPortal): Intensified continental chemical weathering and carbon-cycle perturbations linked to volcanism during the Triassic

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DOI	10.1038/s41467-022-27965-x
	Intensified continental chemical weathering and carbon-cycle perturbations linked to volcanism during the Triassic–Jurassic transition
	Shen J.; Yin R.; Zhang S.; Algeo T.J.; Bottjer D.J.; Yu J.; Xu G.; Penman D.; Wang Y.; Li L.; Shi X.; Planavsky N.J.; Feng Q.; Xie S.
发表日期	2022
ISSN	2041-1723
卷号	13 期号:1
英文摘要	Direct evidence of intense chemical weathering induced by volcanism is rare in sedimentary successions. Here, we undertake a multiproxy analysis (including organic carbon isotopes, mercury (Hg) concentrations and isotopes, chemical index of alteration (CIA), and clay minerals) of two well-dated Triassic–Jurassic (T–J) boundary sections representing high- and low/middle-paleolatitude sites. Both sections show increasing CIA in association with Hg peaks near the T–J boundary. We interpret these results as reflecting volcanism-induced intensification of continental chemical weathering, which is also supported by negative mass-independent fractionation (MIF) of odd Hg isotopes. The interval of enhanced chemical weathering persisted for ~2 million years, which is consistent with carbon-cycle model results of the time needed to drawdown excess atmospheric CO2 following a carbon release event. Lastly, these data also demonstrate that high-latitude continental settings are more sensitive than low/middle-latitude sites to shifts in weathering intensity during climatic warming events. © 2022, The Author(s).
语种	英语
scopus关键词	carbon cycle; chemical weathering; isotopic fractionation; Jurassic; perturbation; Triassic; volcanism
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250535
作者单位	State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Hubei, Wuhan, 430074, China; State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guizhou, Guiyang, 550081, China; Department of Oceanography, Texas A&M University, College Station, TX 77843, United States; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Hubei, Wuhan, 430074, China; Department of Geology, University of Cincinnati, Cincinnati, OH 45221-0013, United States; Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, United States; Department of Geosciences, Utah State University, Logan, UT 84321, United States; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Jiangsu, Nanjing, 210008, China; College of Earth Sciences, Jilin ...
推荐引用方式 GB/T 7714	Shen J.,Yin R.,Zhang S.,等. Intensified continental chemical weathering and carbon-cycle perturbations linked to volcanism during the Triassic–Jurassic transition[J],2022,13(1).
APA	Shen J..,Yin R..,Zhang S..,Algeo T.J..,Bottjer D.J..,...&Xie S..(2022).Intensified continental chemical weathering and carbon-cycle perturbations linked to volcanism during the Triassic–Jurassic transition.Nature Communications,13(1).
MLA	Shen J.,et al."Intensified continental chemical weathering and carbon-cycle perturbations linked to volcanism during the Triassic–Jurassic transition".Nature Communications 13.1(2022).