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DOI | 10.1073/pnas.1711862115 |
Rapid enhancement of chemical weathering recorded by extremely light seawater lithium isotopes at the Permian-Triassic boundary | |
Sun, He1,2; Xiao, Yilin1; Gao, Yongjun3; Zhang, Guijie1; Casey, John F.3; Shen, Yanan1 | |
2018-04-10 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:15页码:3782-3787 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Lithium (Li) isotope analyses of sedimentary rocks from the Meishan section in South China reveal extremely light seawater Li isotopic signatures at the Permian-Triassic boundary (PTB), which coincide with the most severe mass extinction in the history of animal life. Using a dynamic seawater lithium box model, we show that the light seawater Li isotopic signatures can be best explained by a significant influx of riverine [Li] with light delta Li-7 to the ocean realm. The seawater Li isotope excursion started >= 300 Ky before and persisted up to the main extinction event, which is consistent with the eruption time of the Siberian Traps. The eruption of the Siberian Traps exposed an enormous amount of fresh basalt and triggered CO2 release, rapid global warming, and acid rains, which in turn led to a rapid enhancement of continental weathering. The enhanced continental weathering delivered excessive nutrients to the oceans that could lead to marine eutrophication, anoxia, acidification, and ecological perturbation, ultimately resulting in the end-Permian mass extinction. |
英文关键词 | end-Permian mass extinction Li isotopes Meishan section continental weathering Permian-Triassic boundary |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000429540300045 |
WOS关键词 | MASS EXTINCTION ; CALCIUM-CARBONATE ; ND ISOTOPES ; LI ; FRACTIONATION ; CLIMATE ; SECTION ; CONSEQUENCES ; CONSTRAINTS ; TEMPERATURE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204893 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Chinese Acad Sci, Univ Sci & Technol China, Sch Earth & Space Sci, Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China; 2.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Anhui, Peoples R China; 3.Univ Houston, Dept Earth & Atmospher Sci, Houston, TX 77204 USA |
推荐引用方式 GB/T 7714 | Sun, He,Xiao, Yilin,Gao, Yongjun,et al. Rapid enhancement of chemical weathering recorded by extremely light seawater lithium isotopes at the Permian-Triassic boundary[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(15):3782-3787. |
APA | Sun, He,Xiao, Yilin,Gao, Yongjun,Zhang, Guijie,Casey, John F.,&Shen, Yanan.(2018).Rapid enhancement of chemical weathering recorded by extremely light seawater lithium isotopes at the Permian-Triassic boundary.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(15),3782-3787. |
MLA | Sun, He,et al."Rapid enhancement of chemical weathering recorded by extremely light seawater lithium isotopes at the Permian-Triassic boundary".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.15(2018):3782-3787. |
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