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A high-resolution record of the late Hirnantian to Aeronian marine redox change in South China and its relationship with the record of graptolite biodiversity

文献类型：期刊论文

作者Sun, Zongyuan8,9,10; Zhao, Fangqi9,10; Melchin, Michael J.8; Fan, Junxuan1,5,6,7; Zhang, Bolin9,10; Jin, Xin9,10; Zhang, Zihu9,10; Yang, Shengchao5,6,7; Chen, Qing4; Deng, Yiying2,3
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2023-11-01
卷号629页码:16
ISSN号0031-0182
关键词Lungmachi Formation Black shale Rhuddanian Euxinic Kwangsian Orogeny
DOI10.1016/j.palaeo.2023.111793
通讯作者Fan, Junxuan(jxfan@nju.edu.cn)
英文摘要Originating in the late Hirnantian (latest Ordovician) and extending into the Rhuddanian (early Silurian), the global Rhuddanian Oceanic Anoxic Event (Rhuddanian-OAE), characterized by habitat-specific anoxic-euxinic seafloor conditions led to the deposition of widespread graptolitic black shales. However, the intricate relationship between habitat-specific seafloor redox conditions and graptolite diversity record of the Rhuddanian-OAE remains enigmatic. Here, we present a continuous sequence of seafloor redox records obtained from a core spanning from the upper Katian (Ordovician) to the middle Aeronian (Silurian) in the Changning region of SE Sichuan Province. This region represents the Inner Yangtze Sea within the upper Yangtze Platform of South China. Following the glaciation peak of the Hirnantian, our study unveils the evolution of bottom waters, transitioning from oxic to permanently euxinic, intermittently euxinic, anoxic, and suboxic-oxic transitional states. This evolution is supported by independent evidence, including trace metals (Mo, U, V) and Corg/TP ratios, lithology, and TOC content. Local factors and global seawater drove redox changes of bottom water in Changning. In contrast to the increasing oxygenation in Changning and the northern hemisphere's suboxic bottom waters in Yukon, Canada, the bottom water of the southern hemisphere in the early Aeronian maintained a euxinic environment, potentially influencing the graptolite paleogeography of the early Aeronian. The grap-tolite diversity record was likely influenced by both paleoecological changes in the preferred habitat of deeper-water species combined with taphonomic processes that influenced their preservation potential.
WOS关键词ORGANIC-MATTER ACCUMULATION ; UPPER YANGTZE PLATFORM ; CARBON-RICH SEDIMENTS ; BLACK SHALES ; ENVIRONMENTAL-CHANGES ; DISTRIBUTION PATTERN ; MASS EXTINCTION ; TRACE-METALS ; ORDOVICIAN ; GEOCHEMISTRY
资助项目National Natural Science Foundation of China[41902031] ; National Natural Science Foundation of China[92255301] ; State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology[PLC20210103] ; Natural Sciences and Engineering Research Council of Canada[RGPIN-2018-05397]
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
出版者ELSEVIER
WOS记录号WOS:001087560300001
资助机构National Natural Science Foundation of China ; State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology ; Natural Sciences and Engineering Research Council of Canada
源URL[http://ir.nigpas.ac.cn/handle/332004/43182]  
专题中国科学院南京地质古生物研究所
通讯作者Fan, Junxuan
作者单位1.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China
3.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China
4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
5.Nanjing Univ, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China
6.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, Nanjing 210023, Peoples R China
7.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, Sch Earth Sci & Engn, Nanjing 210023, Peoples R China
8.St Francis Xavier Univ, Antigonish, NS B2G 2W5, Canada
9.Chengdu Univ Technol, Int Ctr Sedimentary Geochem & Biogeochem Res, Chengdu 610059, Peoples R China
10.Chengdu Univ Technol, Inst Sedimentary Geol, State Key Lab Oil & Gas Reservoir Geol & Exploitat, Key Lab Deep Time Geog & Environ Reconstruct & App, Chengdu 610059, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Zongyuan,Zhao, Fangqi,Melchin, Michael J.,et al. A high-resolution record of the late Hirnantian to Aeronian marine redox change in South China and its relationship with the record of graptolite biodiversity[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2023,629:16.
APA Sun, Zongyuan.,Zhao, Fangqi.,Melchin, Michael J..,Fan, Junxuan.,Zhang, Bolin.,...&Zhang, Linna.(2023).A high-resolution record of the late Hirnantian to Aeronian marine redox change in South China and its relationship with the record of graptolite biodiversity.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,629,16.
MLA Sun, Zongyuan,et al."A high-resolution record of the late Hirnantian to Aeronian marine redox change in South China and its relationship with the record of graptolite biodiversity".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 629(2023):16.

入库方式： OAI收割

来源：南京地质古生物研究所

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