Shallow ocean oxygen decline during the end-Triassic mass extinction

doi:10.1016/j.gloplacha.2022.103770

	Shallow ocean oxygen decline during the end-Triassic mass extinction
	He, Tianchen 8; Newton, Robert J.8; Wignall, Paul B.8; Reid, Stephen 8; Dal Corso, Jacopo 7; Takahashi, Satoshi 6; Wu, Hepin 4,5; Todaro, Simona 3; Di Stefano, Pietro 3; Randazzo, Vincenzo 2
刊名	GLOBAL AND PLANETARY CHANGE
	2022-03-01
卷号	210 页码:6
关键词	Shallow ocean deoxygenation Western Tethys End-Triassic mass extinction I/(Ca plus Mg)
ISSN号	0921-8181
DOI	10.1016/j.gloplacha.2022.103770
通讯作者	He, Tianchen(T.He@leeds.ac.uk)
英文摘要	The end-Triassic mass extinction (ETME) was associated with intensified deep-water anoxia in epicontinental seas and mid-depth waters, yet the absolute oxygenation state in the shallow ocean is uncharacterized. Here we report carbonate-associated iodine data from the peritidal Mount Sparagio section (Southern Italy) that documents the ETME (similar to 200 Ma) in the western Tethys. We find a sharp drop in carbonate I/(Ca + Mg) ratios across the extinction horizon and persisting into the Early Jurassic. This records local dissolved oxygen and iodate decline in the near-surface ocean of low-latitude Tethys due to the development of depleted oxygen concentrations. Consequently, during the ETME even shallow-water animals, such as the megalodonts seen at Mount Sparagio, were likely the victims of oxygen-poor conditions. The shallow ocean deoxygenation coincides with the synchronous spread of deeper anoxic waters and widespread anoxic deposition on continental shelves and slopes. An upwards expansion of the mid-water oxygen minimum zone in the latest Triassic shoaled the oxycline and triggered a major marine crisis.
资助项目	Natural Environment Research Council[NE/N018559/1] ; National Natural Science Foundation of China[42172031] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41830323] ; National Natural Science Foundation of China[41902026] ; Leverhulme Early Career Fellowship[ECF-2015-044] ; University of Palermo[2019_AIM_CTC_DIS-TEM_CI_1] ; University of Palermo[R4D14-P5F5RISS_MARGINE] ; International Continental Scientific Drilling Program
WOS关键词	ISOTOPIC EVIDENCE ; IODINE ; CARBONATE ; INSIGHTS ; CALCITE ; IODATE
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000772071200003
资助机构	Natural Environment Research Council ; National Natural Science Foundation of China ; Leverhulme Early Career Fellowship ; University of Palermo ; International Continental Scientific Drilling Program
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/40571]
专题	中国科学院南京地质古生物研究所
通讯作者	He, Tianchen
作者单位	1.Univ Padua, Dept Geosci, I-35131 Padua, Italy 2.Univ Milan, Earth Sci Dept Ardito Desio, I-20133 Milan, Italy 3.Univ Palermo, Dept Earth & Marine Sci, I-90123 Palermo, Italy 4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China 5.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 6.Univ Tokyo, Dept Earth & Planetary Sci, Tokyo 1130033, Japan 7.China Univ Geosci, Sch Earth Sci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China 8.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England
推荐引用方式 GB/T 7714	He, Tianchen,Newton, Robert J.,Wignall, Paul B.,et al. Shallow ocean oxygen decline during the end-Triassic mass extinction[J]. GLOBAL AND PLANETARY CHANGE,2022,210:6.
APA	He, Tianchen.,Newton, Robert J..,Wignall, Paul B..,Reid, Stephen.,Dal Corso, Jacopo.,...&Dunhill, Alexander M..(2022).Shallow ocean oxygen decline during the end-Triassic mass extinction.GLOBAL AND PLANETARY CHANGE,210,6.
MLA	He, Tianchen,et al."Shallow ocean oxygen decline during the end-Triassic mass extinction".GLOBAL AND PLANETARY CHANGE 210(2022):6.