Paleo-cold seep activity in the southern South China Sea: Evidence from the geochemical and geophysical records of sediments
文献类型：期刊论文
| 作者 | Li, Niu2; Chen, Duofu3; Zhou, Qixian; Peng, Jie; Yang, Xiaoqiang |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2018 |
| 卷号 | 168页码:106 |
| 关键词 | Cold seep Anaerobic oxidation of methane Sulfur isotope Southern South China Sea |
| ISSN号 | 1367-9120 |
| DOI | 10.1016/j.jseaes.2017.10.022 |
| 英文摘要 | Over the past decade more than 30 cold seep sites have been reported along the continental slope of the South China Sea (SCS). These seep sites have all been located in the northern SCS, and no methane seepage has been discovered in the southern SCS. Here, we report on the analysis results of the geochemical and geophysical of the marine core sediments (58S) collected from the southern continental slope of the SCS. We suggest that the sedimentary total sulfur (TS), total inorganic carbon (TIC), delta S-34(CRs) values of chromium reducible sulfur (CRS) and carbonate delta C-13(TIC) values of the bulk sediments, coupled with the ratio of (NRMAF60mT-NRMAF80mT)/NRM can be used to trace the methane release events in a methane-rich environment. At least two methane release events were identified at depths of 5.5-6.2 m and 6.8-7.2 m. Moreover, according to the characteristic of the TS/TOC and (NRMAF60mT-NRMAF80mT)/NFtM ratio of sediments, we suggest the methane flux has changed episodically. This inference is supported by the occurrence of the strongly negative carbonate delta C-13(TiC) values of bulk sediments and the positive delta S-34(CRS) values, which indicate the occurrence of anaerobic oxidation of methane (AOM) and the location of a past or present sulfate methane transition zone (SMTZ), respectively. Ultimately, these new data suggest that the combined geochemical and geophysical study of marine sediments provides a valuable tool with which to infer the temporal variations in methane seepage in a marine environment. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17667]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 作者单位 | 1.Shanghai Ocean Univ, Coll Marine Sci, Shanghai Engn Res Ctr Hadal Sci & Technol, Shanghai 201306, Peoples R China 2.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Niu,Chen, Duofu,Zhou, Qixian,et al. Paleo-cold seep activity in the southern South China Sea: Evidence from the geochemical and geophysical records of sediments[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,168:106, 111. |
| APA | Li, Niu,Chen, Duofu,Zhou, Qixian,Peng, Jie,&Yang, Xiaoqiang.(2018).Paleo-cold seep activity in the southern South China Sea: Evidence from the geochemical and geophysical records of sediments.JOURNAL OF ASIAN EARTH SCIENCES,168,106. |
| MLA | Li, Niu,et al."Paleo-cold seep activity in the southern South China Sea: Evidence from the geochemical and geophysical records of sediments".JOURNAL OF ASIAN EARTH SCIENCES 168(2018):106. |
入库方式： OAI收割
来源：南海海洋研究所
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。