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Intensified continental chemical weathering and carbon-cycle perturbations linked to volcanism during the Triassic-Jurassic transition
Jun Shen; Runsheng Yin; Shuang Zhang; Thomas J. Algeo; David J. Bottjer; Jianxin Yu; Guozhen Xu; Donald Penman; Yongdong Wang; Liqin Li; Xiao Shi; Noah J. Planavsky; Qinglai Feng; Shucheng Xie
2022
Source PublicationNature Communications
Volume13
Abstract

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.

DOI10.1038/s41467-022-27965-x
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Indexed BySCI
Language英语
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Cited Times:82[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/13616
Collection矿床地球化学国家重点实验室
Affiliation1.State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, 430074, Wuhan, Hubei, P.R. China
2.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550081, Guiyang, Guizhou, P.R. China
3.Department of Oceanography, Texas A&M University, College Station, TX, 77843, USA
4.State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 430074, Wuhan, Hubei, P.R. China
5.Department of Geology, University of Cincinnati, Cincinnati, OH, 45221-0013, USA
6.Department of Earth Sciences, University of Southern California, Los Angeles, CA, 90089, USA
7.Department of Geosciences, Utah State University, Logan, UT, 84321, USA
8.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, 210008, Nanjing, Jiangsu, P.R. China
9.College of Earth Sciences, Jilin University, Changchun, 130061, Jilin, P.R. China
10.Department Geology and Geophysics, Yale University, New Haven, CT, 06520-8109, USA
Recommended Citation
GB/T 7714
Jun Shen,Runsheng Yin,Shuang Zhang,et al. Intensified continental chemical weathering and carbon-cycle perturbations linked to volcanism during the Triassic-Jurassic transition[J]. Nature Communications,2022,13.
APA Jun Shen.,Runsheng Yin.,Shuang Zhang.,Thomas J. Algeo.,David J. Bottjer.,...&Shucheng Xie.(2022).Intensified continental chemical weathering and carbon-cycle perturbations linked to volcanism during the Triassic-Jurassic transition.Nature Communications,13.
MLA Jun Shen,et al."Intensified continental chemical weathering and carbon-cycle perturbations linked to volcanism during the Triassic-Jurassic transition".Nature Communications 13(2022).
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