Organic carbon oxidation and the associated pyrite formation in deep sediments at the Nankai subduction zone
文献类型：期刊论文
| 作者 | Nan, Jingbo1,2; Tsang, Man-Yin; Yao, Weiqi2,3 |
| 刊名 | MARINE AND PETROLEUM GEOLOGY
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 169页码:7 |
| ISSN号 | 0264-8172 |
| DOI | 10.1016/j.marpetgeo.2024.107081 |
| 通讯作者 | Yao, Weiqi(yaowq@sustech.edu.cn) |
| 英文摘要 | The preservation of organic carbon (OC) in marine sediments is crucial for Earth's climate by sequestering CO2. 2 . While OC is mostly remineralized before it reaches the seafloor, a notable fraction is buried in deep-sea sediments, particularly at subduction zones known for their enhanced sedimentation rates that promote OC burial. The mechanisms behind OC recycling and decomposition within subduction zone sediments are governed by biologically mediated redox reactions involving a range of electron acceptors, which facilitate the sequential oxidation of OC. However, direct evidence regarding such effects on OC in deep sediments remains limited. In this study, we examine the contents of pyrite and trace metals of molybdenum (Mo), vanadium (V), and cesium (Cs) in organic-rich deep sediments from the Nankai subduction zone. We find that the pyrite, sulfate, diagenetic illite, and OC contents covary in Unit V, highlighting the important role of organoclastic sulfate reduction and biotic smectite-to-illite reaction at 60-70 degrees C in OC oxidation and pyrite formation. The profiles of Mo, V, and Cs also align with these processes in the same interval. Our findings contribute to an in-depth understanding of OC dynamics in subduction zones, emphasizing the complex interactions within deep sediments that may influence the global carbon cycle. |
| WOS关键词 | SULFATE REDUCTION ; ANAEROBIC OXIDATION ; ILLITE-SMECTITE ; CLAY-MINERALS ; METHANE ; MATTER ; ADSORPTION ; TROUGH ; DIAGENESIS ; FLUID |
| 资助项目 | National Key R&D Program of China[2022YFF0802900] ; NSFC[42376049] ; NSFC[42106069] ; NSFC[42472303] ; Guangdong Natural Science Foundation[2024A1515012537] ; Science and Technology Innovation Committee of Shenzhen Municipality[20231114150312001] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)[223120] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001305556700001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Key R&D Program of China ; NSFC ; Guangdong Natural Science Foundation ; Science and Technology Innovation Committee of Shenzhen Municipality ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/44276]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Yao, Weiqi |
| 作者单位 | 1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China 2.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China 3.Univ Washington, Sch Oceanog, Seattle, WA 98195 USA |
| 推荐引用方式 GB/T 7714 | Nan, Jingbo,Tsang, Man-Yin,Yao, Weiqi. Organic carbon oxidation and the associated pyrite formation in deep sediments at the Nankai subduction zone[J]. MARINE AND PETROLEUM GEOLOGY,2024,169:7. |
| APA | Nan, Jingbo,Tsang, Man-Yin,&Yao, Weiqi.(2024).Organic carbon oxidation and the associated pyrite formation in deep sediments at the Nankai subduction zone.MARINE AND PETROLEUM GEOLOGY,169,7. |
| MLA | Nan, Jingbo,et al."Organic carbon oxidation and the associated pyrite formation in deep sediments at the Nankai subduction zone".MARINE AND PETROLEUM GEOLOGY 169(2024):7. |
入库方式： OAI收割
来源：南京地质古生物研究所
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