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Formation and origin of Fe?Si oxyhydroxide deposits at the ultra-slow spreading Southwest Indian Ridge

文献类型：期刊论文

作者Ta, Kaiwen1,2,3; Wu, Zijun1,2; Peng, Xiaotong3; Luan, Zhaofu1,2; Chen, Shun1,2,4
刊名DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
出版日期2021-04-01
卷号170页码:16
关键词Hydrothermal Fe?Si oxyhydroxide Southwest indian ridge Biomineralized Biogenic
ISSN号0967-0637
DOI10.1016/j.dsr.2021.103491
英文摘要Low-temperature hydrothermal systems are generally dominated by Fe?Si oxyhydroxide deposits. However, the formation process and mechanism of modern hydrothermal Fe?Si oxyhydroxides at ultra-slow spreading centers remain poorly understood. This study focused on six Fe?Si oxyhydroxide deposits collected from different sites at a typical ultra-slow spreading center, the Southwest Indian Ridge (SWIR). The mineralogical and geochemical evidence showed significant characteristics of a low-temperature hydrothermal origin. Sr and Nd isotope compositions of Fe?Si oxyhydroxide deposits at the SWIR probably reflected a combined signature of the hydro thermal fluids and seawater. Pb in the Fe?Si oxyhydroxides exhibited a close association with the substrate rocks and seawater. The Mo?ssbauer spectra and iron speciation data further provided insights into iron-bearing phases in all deposits. Two different types of biomineralized forms were also discovered in these deposits by scanning electron microscopy (SEM) analysis. Energy-dispersive X-ray spectroscopy (EDS) and nanoscale secondary ion mass spectrometry (nanoSIMS) revealed that distinct biogenic structures were mainly composed of Fe, Si, and O, together with some trace elements. Based on these findings, we propose that microbial activity plays a significant role in the formation of Fe?Si oxyhydroxides at the ultra-slow spreading SWIR.
资助项目State Key RD Project[2016YFA0601100] ; National Natural Science Foundation of China[41676061] ; National Natural Science Foundation of China[42006061] ; National Natural Science Foundation of China[41602345]
WOS研究方向Oceanography
语种英语
WOS记录号WOS:000635594100003
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构State Key RD Project ; National Natural Science Foundation of China
源URL[http://ir.idsse.ac.cn/handle/183446/8524]  
专题深海科学研究部_深海地质与地球化学研究室
专家咨询委员会
通讯作者Wu, Zijun
作者单位1.Tongji Univ, Sch Ocean & Earth Sci, Shanghai, Peoples R China
2.Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China
3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Deep Sea Sci Div, Sanya, Peoples R China
4.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China
推荐引用方式
GB/T 7714		 Ta, Kaiwen,Wu, Zijun,Peng, Xiaotong,et al. Formation and origin of Fe?Si oxyhydroxide deposits at the ultra-slow spreading Southwest Indian Ridge[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2021,170:16.
APA Ta, Kaiwen,Wu, Zijun,Peng, Xiaotong,Luan, Zhaofu,&Chen, Shun.(2021).Formation and origin of Fe?Si oxyhydroxide deposits at the ultra-slow spreading Southwest Indian Ridge.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,170,16.
MLA Ta, Kaiwen,et al."Formation and origin of Fe?Si oxyhydroxide deposits at the ultra-slow spreading Southwest Indian Ridge".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 170(2021):16.

入库方式： OAI收割

来源：深海科学与工程研究所

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