Two-stage influences of hydrothermal fluids on pumice near the Iheya North hydrothermal field, Okinawa Trough

doi:10.1080/1064119X.2017.1318987

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Two-stage influences of hydrothermal fluids on pumice near the Iheya North hydrothermal field, Okinawa Trough
	Zhang, Yuxiang 1,2; Zeng, Zhigang 1,2,3,4; Qi, Haiyan 1; Yin, Xuebo 1; Li, He 5; Wang, Xiaoyuan 1,3; Chen, Shuai 1
刊名	MARINE GEORESOURCES & GEOTECHNOLOGY
	2018
卷号	36 期号:4 页码:393-404
关键词	Amorphous silica hydrothermal alteration hydrothermal system pumice temporal variation
ISSN号	1064-119X
DOI	10.1080/1064119X.2017.1318987
通讯作者	Zeng, Zhigang(zgzeng@qdio.ac.cn)
英文摘要	Hydrothermal precipitates and hydrothermal alteration products could record important information about temporal variations of seafloor hydrothermal systems. Geochemistry, mineralogy, and microscopic features of three pumice samples (T3-1, T3-2, and T3-3) near the Iheya North hydrothermal field were analyzed in this article. The results show that T3-3 sample has undergone at least two-stage influences by hydrothermal fluids. In the first stage, pure amorphous silica from hydrothermal fluid precipitated in the vesicles of all three T3 samples as a result of conductive cooling and fluid-seawater mixing. The precipitation temperatures according to oxygen isotope thermometer are approximately 13-21 degrees C. In the second stage, T3-3 pumice underwent low-temperature hydrothermal alteration, during which the amorphous silica precipitates were redissolved, together resulting in losses of FeO and SiO2 and gains of MgO, Pb, Zn, and Cu. Furthermore, ferruginous filamentous silica, which might be related to activities of Fe-oxidizing bacteria, was formed in the altered pumice. The transformation from pure amorphous silica precipitation to redissolution of the silica in T3-3 pumice might indicate a rise of temperature and/or decrease in silica concentrations in hydrothermal fluids, implying a changing hydrothermal environment.
资助项目	National Key Basic Research Program of China[2013CB429700] ; National Science Foundation of China[41325021] ; National Science Foundation of China[41306053] ; National Science Foundation of China[41476044] ; Chinese Academy of Sciences[XDA11030302] ; Special Fund for the Taishan Scholar Program of Shandong Province[ts201511061] ; CAS/SAFEA International Partnership Program for Creative Research Teams ; Qingdao National Laboratory for Marine Science and Technology ; Aoshan Science and Technology Innovation Program[2015ASKJ03]
WOS研究方向	Engineering ; Oceanography ; Mining & Mineral Processing
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000428587200002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/158788]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Zeng, Zhigang
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Peoples R China 4.Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yuxiang,Zeng, Zhigang,Qi, Haiyan,et al. Two-stage influences of hydrothermal fluids on pumice near the Iheya North hydrothermal field, Okinawa Trough[J]. MARINE GEORESOURCES & GEOTECHNOLOGY,2018,36(4):393-404.
APA	Zhang, Yuxiang.,Zeng, Zhigang.,Qi, Haiyan.,Yin, Xuebo.,Li, He.,...&Chen, Shuai.(2018).Two-stage influences of hydrothermal fluids on pumice near the Iheya North hydrothermal field, Okinawa Trough.MARINE GEORESOURCES & GEOTECHNOLOGY,36(4),393-404.
MLA	Zhang, Yuxiang,et al."Two-stage influences of hydrothermal fluids on pumice near the Iheya North hydrothermal field, Okinawa Trough".MARINE GEORESOURCES & GEOTECHNOLOGY 36.4(2018):393-404.