Inconsistent mercury records from terrestrial upland to coastal lowland across the Permian-Triassic transition

doi:10.1016/j.epsl.2023.118195

	Inconsistent mercury records from terrestrial upland to coastal lowland across the Permian-Triassic transition
	Chen, Jianbo 1,2; Sun, Guangyi 3; Lu, Binjian 1,3; Ma, Rong-yao 1; Xiao, Zhuang 4; Cai, Yao-feng ; Zhang, Hua ; Shen, Shu-zhong 5,6; Zhang, Feifei 5,6; Feng, Zhuo 1
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2023-07-15
卷号	614 页码:11
关键词	mercury enrichments mercury isotopes terrestrial sediments Permian-Triassic extinction volcanism
ISSN号	0012-821X
DOI	10.1016/j.epsl.2023.118195
通讯作者	Zhang, Feifei(fzhang@nju.edu.cn) ; Feng, Zhuo(zhuofeng@ynu.edu.cn)
英文摘要	The enrichment of mercury (Hg) in sediments has been increasingly utilized as a proxy for large-scale volcanism. However, a causal link between these two remains ambiguous, as Hg enrichments can be caused by many non-volcanic factors, e.g., changes in local depositional environments or terrestrial runoffs. In this study, we present high-resolution Hg concentration and isotope records of two drill cores, one located in a coastal lowland (HK-1) and the other in a terrestrial upland (TK-1), spanning the Permian-Triassic boundary (PTB). Interestingly, the coastal lowland core exhibits significant Hg enrichments over a stratigraphic horizon of approximately 200 meters (corresponding to a duration of -2 Myrs), with dominating negative A199Hg values. In contrast, the terrestrial upland core primarily displays background Hg levels with near-zero A199Hg values. Given the spatial proximity of the two cores, separated by only about 70 km, we interpret these discrepant Hg signatures to indicate that terrestrial upland underwent minimal influence from terrestrial and/or atmospheric depositions rather than volcanic input, while the coastal lowland was primarily sourced from enhanced terrestrial influxes, depositing under oxygen-deficient conditions. This interpretation is supported by the high concentrations of organic carbon and sulfur, substantial pyrite layers, and positive correlations between Hg and chalcophile elements, such as Mo, Se, and Co, in the HK-1 core. Our study highlights the need to examine multiple Hg enrichment factors in sedimentary records before comprehensively establishing a robust causal link with volcanic activities. A thorough evaluation of multiple lines of evidence, including Hg isotopes, local environmental proxies, and sedimentology investigations, should be conducted first, particularly necessary for the non-marine sediments.(c) 2023 Elsevier B.V. All rights reserved.
资助项目	State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)[223105] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; Second Ti- betan Plateau Scientific Expedition and Research[2019QZKK0706] ; Second Ti- betan Plateau Scientific Expedition and Research[IGGCAS-201905] ; Second Ti- betan Plateau Scientific Expedition and Research[42293280] ; Second Ti- betan Plateau Scientific Expedition and Research[42261144668] ; Second Ti- betan Plateau Scientific Expedition and Research[42073002] ; Second Tibetan Plateau Scientific Expedition and Research[2019QZKK0706] ; Key Research Program of the Institute of Geology and Geo-physics, Chinese Academy of Sciences[IGGCAS-201905] ; National Natural Science Foundation of China[42293280] ; National Natural Science Foundation of China[42261144668] ; National Natural Science Foundation of China[42073002] ; Fundamental Research Funds for the Central Universities[0206-14912213] ; Fundamental Research Funds for the Central Universities[0206/14380149] ; Frontiers Science Center for Critical Earth Material Cycling Fund[DLTD2102]
WOS关键词	ORGANIC-CARBON ; ATMOSPHERIC MERCURY ; MASS EXTINCTION ; END ; VOLCANISM ; ISOTOPES ; SEQUENCES ; BOUNDARY ; SORPTION ; HG(II)
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:001001762500001
资助机构	State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Second Ti- betan Plateau Scientific Expedition and Research ; Second Tibetan Plateau Scientific Expedition and Research ; Key Research Program of the Institute of Geology and Geo-physics, Chinese Academy of Sciences ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Frontiers Science Center for Critical Earth Material Cycling Fund
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/42099]
专题	中国科学院南京地质古生物研究所
通讯作者	Zhang, Feifei; Feng, Zhuo
作者单位	1.Yunnan Univ, Inst Palaeontol, Yunnan Key Lab Earth Syst Sci, Yunnan Key Lab Palaeobiol, Kunming 650500, Peoples R China 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 3.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China 4.Yunnan Univ, Sch Earth Sci, Kunming 650500, Peoples R China 5.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Peoples R China 6.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, Nanjing 210023, Peoples R China
推荐引用方式 GB/T 7714	Chen, Jianbo,Sun, Guangyi,Lu, Binjian,et al. Inconsistent mercury records from terrestrial upland to coastal lowland across the Permian-Triassic transition[J]. EARTH AND PLANETARY SCIENCE LETTERS,2023,614:11.
APA	Chen, Jianbo.,Sun, Guangyi.,Lu, Binjian.,Ma, Rong-yao.,Xiao, Zhuang.,...&Feng, Zhuo.(2023).Inconsistent mercury records from terrestrial upland to coastal lowland across the Permian-Triassic transition.EARTH AND PLANETARY SCIENCE LETTERS,614,11.
MLA	Chen, Jianbo,et al."Inconsistent mercury records from terrestrial upland to coastal lowland across the Permian-Triassic transition".EARTH AND PLANETARY SCIENCE LETTERS 614(2023):11.