Iron oxides (oxyhydroxides) associated with biogenic iron-organic framework structures in deep-sea hydrothermal vents of the Indian Ocean

doi:10.1016/j.chemgeo.2024.121980

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 深海地质与地球化学研究室

	Iron oxides (oxyhydroxides) associated with biogenic iron-organic framework structures in deep-sea hydrothermal vents of the Indian Ocean
	Ta, Kaiwen 1,2,3; Chen, Shun 3; Du, Mengran 3; Li, Jiwei 3; Xu, Hengchao 3; Liu, Shuangquan 3; Chen, Wanli 3; Wu, Zijun 1,2; Peng, Xiaotong 3
刊名	CHEMICAL GEOLOGY
	2024-04-05
卷号	650 页码:15
关键词	Fe -oxides (oxyhydroxides) Hydrothermal environments Biomineralized structures Fe -bearing phases Organic compounds
ISSN号	0009-2541
DOI	10.1016/j.chemgeo.2024.121980
英文摘要	The important geological, environmental, and biological information contained in Fe -oxides (oxyhydroxides) in extreme hydrothermal environments has provided unique opportunities for exploring the microbial -driven mechanism of Fe -oxide formation. However, the interactions between Fe -oxides and organic components and their association with in situ geochemical signatures in hydrothermal systems remain poorly understood. This study analyzed Fe -oxide deposits collected from the Longqi hydrothermal field in the Southwest Indian Ridge and the Edmond and Kairei hydrothermal fields in the Central Indian Ridge using the manned submersible "ShenhaiYongshi". Mineralogical and geochemical characteristics of hydrothermal iron oxide deposits indicated that microbial activity may influence trace element distribution. Analysis with laser confocal Raman spectroscopy (LR) revealed biomineralized structures with significant absorption peaks of Fe-oxyhydroxides. This was further confirmed by two typical L-shaped and Y-shaped structures directly measured using a novel scanning probe technique called infrared photo induced force microscopy (IR-PiFM). The strong peak in the range of 1500 to 1680 cm -1 corresponded to the bending vibration of Fe -O -H. X-ray photoelectron spectroscopy (XPS) showed that the oxidation state and coordination of iron strongly correspond to a biogenic origin. Fe -bearing phases in the biomineralized structures occurred mainly as FeOOH. The combined results of in situ LR, IR-PiFM, and XPS showed that organic compounds identified in mineralized structures could be polysaccharides, lipids, and proteins. The results suggested that bioorganic molecules may play a key role in the formation of Fe(III)-deposited nucleation sites, which promoted the development of biomineralized iron structures. These observations may provide new insights for understanding the biomineralization mechanism of Fe in extreme hydrothermal environments.
资助项目	National Key Research and Development Project[2022YFC2805500] ; National Key Research and Development Project[2022YFC2805400] ; National Natural Science Foundation of China[42006061] ; Hainan Provincial Natural Science Founda- tion of China[SQ2024MSXM1280] ; Youth Innovation Promotion Association, CAS
WOS关键词	RAMAN-SPECTROSCOPY ; RIDGE IMPLICATIONS ; HEMATITIC CHERT ; FE ; SPECTRA ; DEPOSITS ; GEOCHEMISTRY ; BIOGEOGRAPHY ; ADSORPTION ; MORPHOLOGY
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:001197770400001
资助机构	National Key Research and Development Project ; National Natural Science Foundation of China ; Hainan Provincial Natural Science Founda- tion of China ; Youth Innovation Promotion Association, CAS
内容类型	期刊论文
源URL	[http://ir.idsse.ac.cn/handle/183446/10947]
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	Peng, Xiaotong
作者单位	1.Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China 2.Tongji Univ, Sch Ocean & Earth Sci, Shanghai, Peoples R China 3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Deep Sea Sci Div, Sanya, Peoples R China
推荐引用方式 GB/T 7714	Ta, Kaiwen,Chen, Shun,Du, Mengran,et al. Iron oxides (oxyhydroxides) associated with biogenic iron-organic framework structures in deep-sea hydrothermal vents of the Indian Ocean[J]. CHEMICAL GEOLOGY,2024,650:15.
APA	Ta, Kaiwen.,Chen, Shun.,Du, Mengran.,Li, Jiwei.,Xu, Hengchao.,...&Peng, Xiaotong.(2024).Iron oxides (oxyhydroxides) associated with biogenic iron-organic framework structures in deep-sea hydrothermal vents of the Indian Ocean.CHEMICAL GEOLOGY,650,15.
MLA	Ta, Kaiwen,et al."Iron oxides (oxyhydroxides) associated with biogenic iron-organic framework structures in deep-sea hydrothermal vents of the Indian Ocean".CHEMICAL GEOLOGY 650(2024):15.