Carbon and sulfur cycling across the Silurian-Devonian boundary in the Qujing Basin, South China
文献类型：期刊论文
| 作者 | Sun, Lilin3; Zhang, Xiaolin3; Zhu, Min1,2 ; Xu, Yilun3; Zhao, Wenjin1,2; Shen, Yanan3
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| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2024-03-20 |
| 卷号 | 648页码:10 |
| 关键词 | C-isotope Multiple S-isotopes Sulfate concentration The Silurian-Devonian boundary Qujing Basin |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2024.121952 |
| 通讯作者 | Sun, Lilin(sllin@ustc.edu.cn) |
| 英文摘要 | During the late Silurian - Early Devonian there were significant changes in the biosphere and environment. However, there are few integrated studies of carbon and sulfur cycling in the Qujing Basin, in South China, which has extremely well-preserved sarcopterygian fossils. Here we report C-isotopic data of organic carbon (delta 13Corg) and multiple S-isotopes of pyrite (delta 34S and Delta 33S) from two sections in the Qujing Basin. Our delta 13Corg data show an increase of -4 parts per thousand near the Silurian-Devonian boundary which can be correlated globally. We suggest that this rise in delta 13Corg near the Silurian-Devonian boundary may have resulted from the weathering of the 13C-enriched carbonate platform, rather than from oceanic anoxia. This interpretation may explain why there is little evidence of a mass extinction near the Silurian-Devonian boundary in the Qujing Basin. Our S-isotopic data show positive delta 34S values with either positive or negative Delta 33S values, and most of the delta 34S and Delta 33S data can be explained by microbial sulfate reduction and Rayleigh distillation processes. The S-isotopic data from both sections suggest that seawater sulfate concentrations were very low in the Qujing Basin during the late Silurian - Early Devonian. |
| WOS关键词 | MICROBIAL SULFATE REDUCTION ; ISOTOPE FRACTIONATION ; WATER COLUMN ; NORTHEASTERN YUNNAN ; MASS EXTINCTION ; LAND PLANTS ; EVOLUTION ; STRATIGRAPHY ; OCEAN ; CONSTRAINTS |
| 资助项目 | National Natural Science Foundation of China[41721002] ; National Natural Science Foundation of China[41890842] ; National Natural Science Foundation of China[42130209] ; The 111 project[B14026] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001172697900001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; The 111 project |
| 源URL | [http://119.78.100.205/handle/311034/23451]  |
| 专题 | 中国科学院古脊椎动物与古人类研究所 |
| 通讯作者 | Sun, Lilin |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key CAS Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 3.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Lilin,Zhang, Xiaolin,Zhu, Min,et al. Carbon and sulfur cycling across the Silurian-Devonian boundary in the Qujing Basin, South China[J]. CHEMICAL GEOLOGY,2024,648:10. |
| APA | Sun, Lilin,Zhang, Xiaolin,Zhu, Min,Xu, Yilun,Zhao, Wenjin,&Shen, Yanan.(2024).Carbon and sulfur cycling across the Silurian-Devonian boundary in the Qujing Basin, South China.CHEMICAL GEOLOGY,648,10. |
| MLA | Sun, Lilin,et al."Carbon and sulfur cycling across the Silurian-Devonian boundary in the Qujing Basin, South China".CHEMICAL GEOLOGY 648(2024):10. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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