Multiple Sulfur Isotopes of Iron Sulfides From Thick Greigite-Bearing Sediments Indicate Anaerobic Oxidation and Possible Leakages of Coastal Methane
文献类型：期刊论文
| 作者 | Yu, Xiaoxiao2,6; Mei, Xi1; Liu, Jianxing4,5; Lin, Jiarui2,3,6; Wei, Gangjian2,6; Shi, Xuefa4,5; Bai, Jianghao2,3,6; Lin, Mang2,3,6 |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2023-08-28 |
| 卷号 | 50期号:16页码:11 |
| 关键词 | greigite pyrite multiple sulfur isotopes coastal methane South Yellow Sea AOM-SR |
| ISSN号 | 0094-8276 |
| DOI | 10.1029/2023GL103303 |
| 英文摘要 | Magnetic greigite may be a valuable indicator for methane emissions in the geological past, if its formation pathway and diagenetic environment can be unambiguously defined. Here, we investigate sulfur isotopic compositions of iron sulfides and ferrous iron concentrations of thick greigite-bearing sediments (TGBSs) in the South Yellow Sea, a shallow marginal sea with strong methane emissions. For the first time, isotopically heavy iron sulfides (up to 28.7%0 in delta S-34 and 0.19%0 in Delta S-33) and enrichments of ferrous iron in the TGBSs are observed. We interpret the data as indicating synchronic occurrences of anaerobic oxidation of methane coupled to sulfate and iron reductions, which occur in coastal methanic zones with limited sulfate availability and therefore probably imply leakages of methane. Consequently, we suggest that greigite is a promising geological indicator for tracing methane liberated from coastal sediments, accounting for similar to 60% of the currently rising global marine methane budget. |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001057745900002 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74792]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Liu, Jianxing; Lin, Mang |
| 作者单位 | 1.China Geol Survey, Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Pilot Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China 5.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao, Peoples R China 6.Chinese Acad Sci, State Key Lab Isotope Geochem, Guangzhou Inst Geochem, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Xiaoxiao,Mei, Xi,Liu, Jianxing,et al. Multiple Sulfur Isotopes of Iron Sulfides From Thick Greigite-Bearing Sediments Indicate Anaerobic Oxidation and Possible Leakages of Coastal Methane[J]. GEOPHYSICAL RESEARCH LETTERS,2023,50(16):11. |
| APA | Yu, Xiaoxiao.,Mei, Xi.,Liu, Jianxing.,Lin, Jiarui.,Wei, Gangjian.,...&Lin, Mang.(2023).Multiple Sulfur Isotopes of Iron Sulfides From Thick Greigite-Bearing Sediments Indicate Anaerobic Oxidation and Possible Leakages of Coastal Methane.GEOPHYSICAL RESEARCH LETTERS,50(16),11. |
| MLA | Yu, Xiaoxiao,et al."Multiple Sulfur Isotopes of Iron Sulfides From Thick Greigite-Bearing Sediments Indicate Anaerobic Oxidation and Possible Leakages of Coastal Methane".GEOPHYSICAL RESEARCH LETTERS 50.16(2023):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。