气候变化领域集成服务门户(CCPortal): Mercury enrichments provide evidence of Early Triassic volcanism following the end-Permian mass extinction

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DOI	10.1016/j.earscirev.2019.05.010
	Mercury enrichments provide evidence of Early Triassic volcanism following the end-Permian mass extinction
	Shen J.; Algeo T.J.; Planavsky N.J.; Yu J.; Feng Q.; Song H.; Song H.; Rowe H.; Zhou L.; Chen J.
发表日期	2019
ISSN	00128252
起始页码	191
结束页码	212
卷号	195
英文摘要	Oceanic environments and biotas were in a state of near-continuous perturbation during the Early Triassic, the ~5-million-year interval following the latest Permian mass extinction (LPME), but the underlying cause(s) remain uncertain. The role of episodic volcanic or intrusive magmatic activity in triggering global-scale perturbations during this interval is suspected but has not been strongly evidenced to date. Here, we investigate the record of volcanism through the Early Triassic (with a focus on the Smithian-Spathian Boundary, or SSB) using mercury (Hg) concentrations in marine sediments as a proxy. This study examines five marine sections from three paleo-oceans (Paleo-Tethys, Neo-Tethys, and Panthalassa) representing a range of depositional settings from shallow platform to deep slope. Our results suggest that volcanic and magmatic activity of the Siberian Traps Large Igneous Province (STLIP) was most intense during the first ~1.3 million years following the LPME, and that termination of its most active stage was responsible for a sharp cooling event at the SSB. Variations in the intensity of STLIP activity are thus likely to account for the large (>8‰) fluctuations of δ13Ccarb and related changes in oceanic redox and environmental conditions that characterized the Griesbachian to Smithian substages of the Early Triassic in marine sections globally. We hypothesize that a strong reduction or cessation of STLIP activity at the SSB set the stage for the recovery of marine biodiversity and ecosystems in the Spathian and later. © 2019 Elsevier B.V.
关键词	Induan Large igneous province Olenekian Recovery Siberian Traps Smithian-Spathian Boundary
英文关键词	enrichment; environmental conditions; large igneous province; marine environment; mass extinction; mercury (element); Permian; Triassic; volcanism
语种	英语
来源期刊	Earth Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203555
作者单位	State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, Hubei 430074, China; Department Geology and Geophysics, Yale University, New Haven, CT 06520-8109, United States; Department of Geology, University of Cincinnati, Cincinnati, OH 45221-0013, United States; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, Hubei 430074, China; Premier Oilfield Group, 11335 Clay Road, Suite #180, Houston, TX 77433, United States; Institute of Surface-Earth System Science, Tianjin University, Tianjin, 300072, China
推荐引用方式 GB/T 7714	Shen J.,Algeo T.J.,Planavsky N.J.,et al. Mercury enrichments provide evidence of Early Triassic volcanism following the end-Permian mass extinction[J],2019,195.
APA	Shen J..,Algeo T.J..,Planavsky N.J..,Yu J..,Feng Q..,...&Chen J..(2019).Mercury enrichments provide evidence of Early Triassic volcanism following the end-Permian mass extinction.Earth Science Reviews,195.
MLA	Shen J.,et al."Mercury enrichments provide evidence of Early Triassic volcanism following the end-Permian mass extinction".Earth Science Reviews 195(2019).