Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41467-020-15400-y |
Persistent global marine euxinia in the early Silurian | |
Stockey, Richard G.1; Cole, Devon B.2; Planavsky, Noah J.3; Loydell, David K.4; Fryda, Jiri5; Sperling, Erik A.1 | |
2020-04-14 | |
发表期刊 | NATURE COMMUNICATIONS
![]() |
ISSN | 2041-1723 |
出版年 | 2020 |
卷号 | 11期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England; Czech Republic |
英文摘要 | The second pulse of the Late Ordovician mass extinction occurred around the Hirnantian-Rhuddanian boundary (similar to 444Ma) and has been correlated with expanded marine anoxia lasting into the earliest Silurian. Characterization of the Hirnantian ocean anoxic event has focused on the onset of anoxia, with global reconstructions based on carbonate delta U-238 modeling. However, there have been limited attempts to quantify uncertainty in metal isotope mass balance approaches. Here, we probabilistically evaluate coupled metal isotopes and sedimentary archives to increase constraint. We present iron speciation, metal concentration, delta Mo-98 and delta U-238 measurements of Rhuddanian black shales from the Murzuq Basin, Libya. We evaluate these data (and published carbonate delta U-238 data) with a coupled stochastic mass balance model. Combined statistical analysis of metal isotopes and sedimentary sinks provides uncertainty-bounded constraints on the intensity of Hirnantian-Rhuddanian euxinia. This work extends the duration of anoxia to >3 Myrs - notably longer than well-studied Mesozoic ocean anoxic events. The Late Ordovician mass extinction has been attributed to extended marine anoxia. Here, the authors use a metal isotope mass balance model and find the marine anoxic event lasted over 3 million years, notably longer than the anoxic event associated with the Permian-Triassic extinction and Cretaceous ocean anoxic events. |
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:000528788700005 |
WOS关键词 | MOLYBDENUM ISOTOPE FRACTIONATION ; MASS EXTINCTION ; TRACE-METALS ; NORTH-AFRICA ; MODERN BLACK ; HOT SHALE ; URANIUM ; REDOX ; OCEAN ; SEDIMENTS |
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/249562 |
专题 | 资源环境科学 |
作者单位 | 1.Stanford Univ, Dept Geol Sci, Stanford, CA 94305 USA; 2.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA; 3.Yale Univ, Dept Geol & Geophys, New Haven, CT 06511 USA; 4.Univ Portsmouth, Sch Environm Geog & Geosci, Portsmouth PO1 3QL, Hants, England; 5.Czech Univ Life Sci Prague, Fac Environm Sci, Prague, Czech Republic |
推荐引用方式 GB/T 7714 | Stockey, Richard G.,Cole, Devon B.,Planavsky, Noah J.,et al. Persistent global marine euxinia in the early Silurian[J]. NATURE COMMUNICATIONS,2020,11(1). |
APA | Stockey, Richard G.,Cole, Devon B.,Planavsky, Noah J.,Loydell, David K.,Fryda, Jiri,&Sperling, Erik A..(2020).Persistent global marine euxinia in the early Silurian.NATURE COMMUNICATIONS,11(1). |
MLA | Stockey, Richard G.,et al."Persistent global marine euxinia in the early Silurian".NATURE COMMUNICATIONS 11.1(2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论