Mercury evidence of Deccan volcanism driving the Latest Maastrichtian warming event

doi:10.1130/G50016.1

	Mercury evidence of Deccan volcanism driving the Latest Maastrichtian warming event
	Li, Sha 9,10; Grasby, Stephen E.8; Zhao, Xiangdong 9,10; Chen, Jiubin 7; Zheng, Daran 9,10; Wang, He 9,10; Fang, Yanan 9,10; Zhang, Qi 6; Yu, Tingting 9,10; Tian, Jingxiang 3,4,5
刊名	GEOLOGY
	2022-10-01
卷号	50 期号:10 页码:1140-1144
ISSN号	0091-7613
DOI	10.1130/G50016.1
通讯作者	Li, Sha(shali@nigpas.ac.cn) ; Wang, Bo(bowang@nigpas.ac.cn)
英文摘要	The timing and ecological impacts of the Deccan Traps large igneous province eruption are vigorously debated. Pre-Cretaceous-Paleogene (KPg) boundary impacts of Deccan volcanism have been widely identified in marine sediments, but direct evidence of terrestrial impacts remains rare. We used mercury concentrations and isotopic compositions, a proxy for volcanic activity, to assess impacts on terrestrial environments. We studied two drill cores across the KPg boundary in eastern China that represent two different depositional environments: elastic deposits in the Jiaolai Basin and carbonate deposits in the Pingyi Basin. Both drill cores exhibit strong Hg enrichment prior to the KPg boundary. Near consistent mass-independent fractionation (MIF) of odd-Hg isotopes (odd-MIF) in the Jiaolai Basin likely indicates a volcanogenic source of Hg spikes below the KPg boundary. Odd-MIF isotopes in the Pingyi Basin likewise suggest a volcanogenic Hg source but with a terrestrial Hg signature of lower Delta Hg-199 values before and after the Hg spike interval. The Hg enrichment level can be stratigraphically correlated to the beginning of the Latest Maastrichtian warming event (LMWE) and is consistent with a strong, negative carbon-isotope excursion (CIE) in both delta C-13(org) (organic matter) and delta C-13(carb) (carbonate), suggesting a disturbance of the global carbon cycle induced by a major pulse of Deccan Traps volcanism. Our discovery of a terrestrial record of pre-KPg boundary Deccan volcanism provides robust evidence of global influence of the Deccan Traps large igneous province during the LMWE.
资助项目	National Natural Science Foundation of China[41830647] ; National Natural Science Foundation of China[42125201] ; National Natural Science Foundation of China[41972018] ; National Natural Science Foundation of China[41730317] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2022310]
WOS关键词	MASS EXTINCTION ; PALEOGENE ; ISOTOPES ; CLIMATE
WOS研究方向	Geology
语种	英语
出版者	GEOLOGICAL SOC AMER, INC
WOS记录号	WOS:000886618100011
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/41508]
专题	中国科学院南京地质古生物研究所
通讯作者	Li, Sha; Wang, Bo
作者单位	1.China Univ Geosci, Sch Earth Sci & Resources, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China 2.Nat Hist Museum, Dept Earth Sci, London SW7 5BD, England 3.Key Lab Metallogen Geol Proc & Resources Utilizat, Jinan 250013, Peoples R China 4.Minist Land & Resources, Key Lab Gold Mineralizat Proc & Resource Utilizat, Jinan 250013, Peoples R China 5.Shandong Inst Geol Sci, Jinan 250013, Peoples R China 6.Qufu Normal Univ, Sch Geog & Tourism, Rizhao 276826, Peoples R China 7.Tianjin Univ, Sch Earth Syst Sci, Inst Surface Earth Syst Sci, 92 Weijin Rd, Tianjin 300072, Peoples R China 8.Geol Survey Canada, 3303 33rd St Nw, Calgary, AB T2L 2A7, Canada 9.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China 10.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Li, Sha,Grasby, Stephen E.,Zhao, Xiangdong,et al. Mercury evidence of Deccan volcanism driving the Latest Maastrichtian warming event[J]. GEOLOGY,2022,50(10):1140-1144.
APA	Li, Sha.,Grasby, Stephen E..,Zhao, Xiangdong.,Chen, Jiubin.,Zheng, Daran.,...&Wang, Bo.(2022).Mercury evidence of Deccan volcanism driving the Latest Maastrichtian warming event.GEOLOGY,50(10),1140-1144.
MLA	Li, Sha,et al."Mercury evidence of Deccan volcanism driving the Latest Maastrichtian warming event".GEOLOGY 50.10(2022):1140-1144.