Formation of Fe-Si-Mn oxyhydroxides at the PACMANUS hydrothermal field, Eastern Manus Basin: Mineralogical and geochemical evidence

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	Formation of Fe-Si-Mn oxyhydroxides at the PACMANUS hydrothermal field, Eastern Manus Basin: Mineralogical and geochemical evidence
	Zeng, Zhigang 1; Ouyang, Hegen 1,2; Yin, Xuebo 1; Chen, Shuai 1,2; Wang, Xiaoyuan 1; Wu, Li 1,2
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2012-10-22
卷号	60 页码:130-146
关键词	Fe-Si-Mn oxyhydroxides Hydrothermal PACMANUS Eastern Manus Basin
ISSN号	1367-9120
通讯作者	Zeng, ZG (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Seafloor Hydrothermal Act Lab, 7 Nanhai Rd, Qingdao 266071, Peoples R China.
英文摘要	Samples of Fe-Si-Mn oxyhydroxides were collected from the PACMANUS hydrothermal field, which lies in a young back-arc setting in the Eastern Manus Basin. The purpose of the study was to understand the origin and characteristics of Fe-Si-Mn oxyhydroxides associated with massive sulfides in a back-arc basin. The PACMANUS Fe-Si-Mn oxyhydroxides are composed of Fe oxyhydroxides and Mn oxyhydroxides with opal-A and nontronite; they have very low concentrations of trace elements (except for Ba, Mo. V and U) and rare earth elements, and they show REE distribution patterns with positive Eu anomalies and slight enrichments of LREEs. The Fe-Si-Mn oxyhydroxides appear to be precipitated mainly from hydrothermal fluid with limited seawater contamination, and scavenged trace metals are predominantly from the ambient seawater. The differences in the REE distribution patterns between the Fe-oxyhydroxide fraction and Mn-oxyhydroxide fraction originate from diagenetic processes. There are diverse filamentous microtextures resembling unique microbial populations, suggesting microbially-mediated mineralization during the precipitation of the Fe-Si-Mn oxyhydroxides.
学科主题	Geosciences, Multidisciplinary
收录类别	SCI
原文出处	10.1016/j.jseaes.2012.08.009
语种	英语
WOS记录号	WOS:000313766700009
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/12501]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Seafloor Hydrothermal Act Lab, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Zhigang,Ouyang, Hegen,Yin, Xuebo,et al. Formation of Fe-Si-Mn oxyhydroxides at the PACMANUS hydrothermal field, Eastern Manus Basin: Mineralogical and geochemical evidence[J]. JOURNAL OF ASIAN EARTH SCIENCES,2012,60:130-146.
APA	Zeng, Zhigang,Ouyang, Hegen,Yin, Xuebo,Chen, Shuai,Wang, Xiaoyuan,&Wu, Li.(2012).Formation of Fe-Si-Mn oxyhydroxides at the PACMANUS hydrothermal field, Eastern Manus Basin: Mineralogical and geochemical evidence.JOURNAL OF ASIAN EARTH SCIENCES,60,130-146.
MLA	Zeng, Zhigang,et al."Formation of Fe-Si-Mn oxyhydroxides at the PACMANUS hydrothermal field, Eastern Manus Basin: Mineralogical and geochemical evidence".JOURNAL OF ASIAN EARTH SCIENCES 60(2012):130-146.