A newly discovered ancient cold seep in the northwestern part of the South China Sea: Evidence from the authigenic carbonate
文献类型:期刊论文
作者 | Wei, Jiangong5,6,7; Miao, Xiaoming4; Wan, Zhifeng3; Li, Jiwei2; Xu, Hengchao2; Li, Jiangtao1; Wu, Tingting6 |
刊名 | JOURNAL OF ASIAN EARTH SCIENCES |
出版日期 | 2023-10-15 |
卷号 | 256页码:10 |
ISSN号 | 1367-9120 |
关键词 | Cold seep Authigenic carbonate Fluid source Environmental conditions South China Sea |
DOI | 10.1016/j.jseaes.2023.105835 |
通讯作者 | Miao, Xiaoming(xiaomingMr1992@126.com) |
英文摘要 | The cold seep activity creates a unique environment on the deep sea floor, and gave birth to a unique authigenic mineral- seep carbonate. In 2018, a new paleo-seep was discovered in the vicinity of the Ganquan Plateau using the manned submersible "Shenhaiyongshi" and seep carbonate samples were recovered. Here, we performed geochemical and mineralogical analyses on the seep carbonates. The results show that the seep carbonates (SY069) are mainly low-magnesium calcites with negative excursion in 813C values (-43.46 to -33.83 VPDB) and positive excursion in 818O values (2.10 to 3.80 VPDB), indicating that the carbonate formation is mainly affected by methane from gas hydrate dissociation. Meanwhile, the rare earth elements (REE) in the seep carbonates are enriched in middle REEs and there is no Ce anomaly (0.93 to 1.08) after the Post Archean Australian Shale standardization, indicating that the seep carbonates were formed in an anoxic environment. In addition, the Y/ Ho ratio is low (29.39 to 42.03), indicating a low methane flux. Therefore, it is suggested that SY069 carbonate rocks were formed in anaerobic environment with low methane flux. The above results are helpful for us to better understand the formation process of seep carbonates. Moreover, the Ganquan Plateau also be one of the hydrate occurrence areas, which is of great significance for us to explore the hydrate. |
WOS关键词 | RARE-EARTH-ELEMENTS ; OXYGEN-ISOTOPE FRACTIONATION ; NORTHERN CONTINENTAL-SLOPE ; GAS HYDRATE ; ANAEROBIC OXIDATION ; FLUID SOURCES ; MASSIVE DISSOCIATION ; CERIUM ANOMALIES ; METHANE ; CONSTRAINTS |
资助项目 | National Key Research and Develop-ment Plan[2021YFC2800300] ; National Key Research and Develop-ment Plan[2016YFC0304905-03] ; National Natural Science Foundation of China[42276076] |
WOS研究方向 | Geology |
语种 | 英语 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
WOS记录号 | WOS:001070516200001 |
资助机构 | National Key Research and Develop-ment Plan ; National Natural Science Foundation of China |
源URL | [http://ir.idsse.ac.cn/handle/183446/10506] |
专题 | 深海科学研究部_深海地质与地球化学研究室 |
通讯作者 | Miao, Xiaoming |
作者单位 | 1.Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China 2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Deep Sea Sci Div, Sanya 572000, Peoples R China 3.Sun Yat Sen Univ, Sch Marine Sci, Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China 4.Ocean Univ China, Coll Environm Sci & Engn, Qingdao 266100, Peoples R China 5.China Geol Survey, Acad South China Sea Geol Sci, Sanya 572025, Peoples R China 6.Guangzhou Marine Geol Survey, MLR Key Lab Marine Mineral Resources, Guangzhou 510075, Peoples R China 7.Sanya Inst South China Sea Geol, Guangzhou Marine Geol Survey, Sanya 572025, Peoples R China |
推荐引用方式 GB/T 7714 | Wei, Jiangong,Miao, Xiaoming,Wan, Zhifeng,et al. A newly discovered ancient cold seep in the northwestern part of the South China Sea: Evidence from the authigenic carbonate[J]. JOURNAL OF ASIAN EARTH SCIENCES,2023,256:10. |
APA | Wei, Jiangong.,Miao, Xiaoming.,Wan, Zhifeng.,Li, Jiwei.,Xu, Hengchao.,...&Wu, Tingting.(2023).A newly discovered ancient cold seep in the northwestern part of the South China Sea: Evidence from the authigenic carbonate.JOURNAL OF ASIAN EARTH SCIENCES,256,10. |
MLA | Wei, Jiangong,et al."A newly discovered ancient cold seep in the northwestern part of the South China Sea: Evidence from the authigenic carbonate".JOURNAL OF ASIAN EARTH SCIENCES 256(2023):10. |
入库方式: OAI收割
来源:深海科学与工程研究所
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