Mercury evidence for volcanism driving environmental changes during the protracted Late Ordovician mass extinction and early Silurian recovery
文献类型：期刊论文
| 作者 | Li, Yanfang1,5; Tian, Hui1,5; Zhang, Tongwei4; Shen, Baojian3; Shao, Deyong2 |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2025-02-20 |
| 卷号 | 674页码:11 |
| 关键词 | Volcanic activity Mercury isotope Ordovician-Silurian transition Hirnantian glaciation Mass extinctions Black shale |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2024.122566 |
| 英文摘要 | Volcanism has been proposed as the trigger for the environmental perturbations and associated mass extinction during the Ordovician-Silurian (O-S) transition. However, the timing, duration, and intensity of volcanic eruptions during this critical period and their relationships to environmental perturbations and biotic changes remain unresolved. In this study, we use mercury (Hg) concentrations and isotopes from marine sediments in South China to reconstruct the evolution of volcanism from the Late Ordovician to early Silurian. Our results show that strong Hg enrichment coupled with generally near-zero to slightly positive Delta 199Hg values occurred before, during, and after the classically defined Late Ordovician Mass Extinction (LOME), suggesting a significant influx of volcanogenic Hg. The Hg enrichment intervals coincided with global warming, oceanic anoxia, and negative excursions in carbon and sulfur isotopes, suggesting that volcanism drove the environmental perturbations during the O-S transition. The coincidence of Hg enrichment with extinction horizons supports the hypothesis that volcanism may have contributed to LOME. Our study also suggests that volcanism persisted for approximately 3 million years after mass extinction and may have delayed the recovery of marine ecosystems during early Silurian. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001391415200001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81818]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Tian, Hui |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 2.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China 3.SINOPEC, Petr Explorat & Prod Res Inst, Beijing 100083, Peoples R China 4.Univ Texas Austin, Bur Econ Geol, Austin, TX 78713 USA 5.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yanfang,Tian, Hui,Zhang, Tongwei,et al. Mercury evidence for volcanism driving environmental changes during the protracted Late Ordovician mass extinction and early Silurian recovery[J]. CHEMICAL GEOLOGY,2025,674:11. |
| APA | Li, Yanfang,Tian, Hui,Zhang, Tongwei,Shen, Baojian,&Shao, Deyong.(2025).Mercury evidence for volcanism driving environmental changes during the protracted Late Ordovician mass extinction and early Silurian recovery.CHEMICAL GEOLOGY,674,11. |
| MLA | Li, Yanfang,et al."Mercury evidence for volcanism driving environmental changes during the protracted Late Ordovician mass extinction and early Silurian recovery".CHEMICAL GEOLOGY 674(2025):11. |
入库方式： OAI收割
来源：广州地球化学研究所
浏览0
下载0
收藏0
其他版本
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。