| Tracking the evolution of seawater Mo isotopes through the Ediacaran-Cambrian transition | |
| Ye, Yuntao1; Wang, Huajian1; Wang, Xiaomei1; Zhai, Lina2; Wu, Chaodong3,4; Canfield, Donald E.1,5; Zhang, Shuichang1 | |
| 2020-11-01 | |
| 发表期刊 | PRECAMBRIAN RESEARCH
 |
| ISSN | 0301-9268 |
| 卷号 | 350页码:11 |
| 通讯作者 | Zhang, Shuichang(sczhang@petrochina.com.cn) |
| 摘要 | The rapid increase in animal diversity and abundance over the Ediacaran-Cambrian boundary has been attributed to, among other parameters, pronounced Earth surface oxygenation at that time. However, whether atmospheric oxygen elevated to modern levels, or whether the extent was smaller and oxygen remained relatively muted until the late Paleozoic is currently debated. Here, we present new Mo isotope datasets of drill core material for two key black shale units (the Ediacaran Doushantuo Formation and the lower Cambrian Jiumenchong Formation), located on the Yangtze Block. These data capture a 0.7 parts per thousand isotope fractionation between sediments experiencing quantitative and non-quantitative Mo removal. By identifying this offset, we provide integrated estimates for global seawater Mo isotope compositions during the deposition of these two formations (similar to 1.2-1.4 parts per thousand and similar to 1.8-2 parts per thousand, respectively). When paired with a mass balance model, our results indicate that a large proportion of the early Cambrian ocean was bathed under oxic waters. We also discuss how recent discoveries have provided insights into the geochemical processes underpinning the oxygenation of the oceans. |
| 关键词 | Molybdenum Ocean oxygenation Doushantuo formation Jiumenchong formation Ediacaran-Cambrian South China |
| DOI | 10.1016/j.precamres.2020.105929 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Key Research and Development Program of China[2017YFC0603101] ; National Science and Technology Major Project of the Ministry of Science and Technology of China[2016ZX05004001] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010101] ; National Natural Science Foundation of China[41530317] ; National Natural Science Foundation of China[41872125] ; Villum Foundation[16518] |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000589423600041 |
| 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/337002/169369 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Zhang, Shuichang |
| 作者单位 | 1.China Natl Petr Corp, Key Lab Petr Geochem, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Minist Educ, Beijing 100871, Peoples R China 4.Peking Univ, Inst Oil & Gas, Beijing 100871, Peoples R China 5.Univ Southern Denmark, Dept Biol, Nordcee, DK-5230 Odense M, Denmark |
| 推荐引用方式 GB/T 7714 | Ye, Yuntao,Wang, Huajian,Wang, Xiaomei,et al. Tracking the evolution of seawater Mo isotopes through the Ediacaran-Cambrian transition[J]. PRECAMBRIAN RESEARCH,2020,350:11. |
| APA | Ye, Yuntao.,Wang, Huajian.,Wang, Xiaomei.,Zhai, Lina.,Wu, Chaodong.,...&Zhang, Shuichang.(2020).Tracking the evolution of seawater Mo isotopes through the Ediacaran-Cambrian transition.PRECAMBRIAN RESEARCH,350,11. |
| MLA | Ye, Yuntao,et al."Tracking the evolution of seawater Mo isotopes through the Ediacaran-Cambrian transition".PRECAMBRIAN RESEARCH 350(2020):11. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| 1-s2.0-S030192682030（6341KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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