| Enhanced hydrological cycle during Oceanic Anoxic Event 2 at southern high latitudes: New insights from IODP Site U1516 | |
Chen, Hongjin1,5; Xu, Zhaokai1,2,3,4; Bayon, Germain6; Lim, Dhongil7; Batenburg, Sietske J.8; Petrizzo, Maria Rose9; Hasegawa, Takashi10; Li, Tiegang2,11
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| 2022-02-01 | |
| 发表期刊 | GLOBAL AND PLANETARY CHANGE
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| ISSN | 0921-8181 |
| 卷号 | 209页码:14 |
| 通讯作者 | Xu, Zhaokai([email protected]) ; Li, Tiegang([email protected]) |
| 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. |
| 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 |
| DOI | 10.1016/j.gloplacha.2022.103735 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 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 |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000748992000002 |
| 出版者 | ELSEVIER |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/177955 |
| 专题 | 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.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Geol, Qingdao 266061, Peoples R China 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.IFREMER, Marine Geosci Unit, F-29280 Plouzane, France 7.Korea Inst Ocean Sci & Technol, Busan 53201, South Korea 8.Univ Barcelona, Fac Ciencies Terra, Dept Dinam Terra & Ocea, Barcelona 08028, Spain 9.Univ Milan, Dipartimento Sci Terra A Desio, Via Mangiagalli 34, I-20133 Milan, Italy 10.Kanazawa Univ, Inst Sci & Engn, Fac Nat Syst, Dept Earth Sci, Kakuma Machi, Kanazawa, Ishikawa 9201192, Japan 11.Minist Nat Resources, Key Lab Marine Sedimentol & Metallogeny, Inst Oceanog 1, Qingdao 266061, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 通讯作者单位 | 中国科学院海洋研究所 |
| 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. |
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