Enhanced hydrological cycle during Oceanic Anoxic Event 2 at southern high latitudes: New insights from IODP Site U1516

doi:10.1016/j.gloplacha.2022.103735

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Enhanced hydrological cycle during Oceanic Anoxic Event 2 at southern high latitudes: New insights from IODP Site U1516
	Chen, Hongjin 7,11; Xu, Zhaokai 8,9,10,11; Bayon, Germain 6; Lim, Dhongil 5; Batenburg, Sietske J.4; Petrizzo, Maria Rose 3; Hasegawa, Takashi 2; Li, Tiegang 1,10
刊名	GLOBAL AND PLANETARY CHANGE
	2022-02-01
卷号	209 页码:14
关键词	Oceanic Anoxic Event 2 International Ocean Discovery Program Expedition 369 Southern high latitude Mentelle Basin Neodymium isotopes Hydrological cycle Paleo-productivity Black shale
ISSN号	0921-8181
DOI	10.1016/j.gloplacha.2022.103735
通讯作者	Xu, Zhaokai(zhaokaixu@qdio.ac.cn) ; Li, Tiegang(tgli@fio.org.cn)
英文摘要	The Oceanic Anoxic Event 2 (OAE 2) represents one of the most profound global environmental disturbances of the Mesozoic Era, which was associated with a positive carbon isotope excursion due to widespread organic carbon burial. However, the character, evolutionary history, and exact driving mechanisms of OAE 2 are still much debated, exacerbated by the lack of records from climate-sensitive southern high latitudes. Here we present a multi-proxy record of a stratigraphically continuous succession spanning the late Cenomanian to early Turanian at the International Ocean Discovery Program Site tt1516 in the Mentelle Basin off southwest Australia, which was located at southern high latitudes (similar to 60-62 degrees S) during the Late Cretaceous. Sedimentary records at Site tt1516 allow the first detailed insights into source-to-sink processes in the Mentelle Basin and associated paleoenvironmental reconstruction in the southern Indian Ocean during OAE 2. Rare earth element abundances and clay-bound neodymium isotopes of the siliciclastic sediment fractions indicate that southwest Australia was the main detrital source of sediment at Site U1516 during OAE 2, with volcanogenic sediments representing only a minor component. A major provenance shift is observed across OAE 2, indicating an increased sediment contribution from distant sources (i.e., Yilgarn Craton and Albany-Fraser Orogen) relative to proximal sources (i. e., Perth Basin and Leeuwin Block) in southwest Australia, interpreted as reflecting a major reorganization of the drainage system due to enhanced fluvial runoff. Based on these findings, we infer that the OAE 2 interval showing the most prominent delta C-13 excursion was associated with an intensification of the hydrological cycle in the high-latitude southern hemisphere, with potential impacts on regional ocean chemistry and marine productivity. In particular, we suggest that enhanced terrigenous input and riverine nutrient export likely played a key role in controlling siliceous productivity at nearby ocean margins. As a consequence, the intense burial of organic matter (i.e., black shale) at Site U1516, which occurred episodically throughout OAE 2, possibly resulted from the combination of enhanced riverine-driven marine productivity and increased burial efficiency associated with the development of anoxic/euxinic bottom water conditions.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40010100] ; National Natural Science Foundation of China[41876034] ; National Natural Science Foundation of China[41676038] ; National Natural Science Foundation of China[41376064] ; National Natural Science Foundation of China[41830539] ; Qingdao National Laboratory for Marine Science and Technology[2016ASKJ13] ; Taishan Scholars Project Funding ; National Research Foundation of Korea - Korea government (MSIT)[2021R1A2C1014443] ; China Scholarship Council
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000748992000002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/177954]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Xu, Zhaokai; Li, Tiegang
作者单位	1.Minist Nat Resources, Key Lab Marine Sedimentol & Metallogeny, Inst Oceanog 1, Qingdao 266061, Peoples R China 2.Kanazawa Univ, Inst Sci & Engn, Fac Nat Syst, Dept Earth Sci, Kakuma Machi, Kanazawa, Ishikawa 9201192, Japan 3.Univ Milan, Dipartimento Sci Terra A Desio, Via Mangiagalli 34, I-20133 Milan, Italy 4.Univ Barcelona, Fac Ciencies Terra, Dept Dinam Terra & Ocea, Barcelona 08028, Spain 5.Korea Inst Ocean Sci & Technol, Busan 53201, South Korea 6.IFREMER, Marine Geosci Unit, F-29280 Plouzane, France 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 8.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 9.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 10.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Geol, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Chen, Hongjin,Xu, Zhaokai,Bayon, Germain,et al. Enhanced hydrological cycle during Oceanic Anoxic Event 2 at southern high latitudes: New insights from IODP Site U1516[J]. GLOBAL AND PLANETARY CHANGE,2022,209:14.
APA	Chen, Hongjin.,Xu, Zhaokai.,Bayon, Germain.,Lim, Dhongil.,Batenburg, Sietske J..,...&Li, Tiegang.(2022).Enhanced hydrological cycle during Oceanic Anoxic Event 2 at southern high latitudes: New insights from IODP Site U1516.GLOBAL AND PLANETARY CHANGE,209,14.
MLA	Chen, Hongjin,et al."Enhanced hydrological cycle during Oceanic Anoxic Event 2 at southern high latitudes: New insights from IODP Site U1516".GLOBAL AND PLANETARY CHANGE 209(2022):14.