Geochemical characteristics of hydrothermal sediments from Iheya North Knoll in the Okinawa Trough

IOCAS-IR

	Geochemical characteristics of hydrothermal sediments from Iheya North Knoll in the Okinawa Trough
	Hu QN(胡倩男); Zhang X(张鑫); Jiang FQ(蒋富清); Wang B(王冰); Luan ZD(栾振东); Chen ZA(陈长安); Yan J(阎军)
发表期刊	Chinese Journal of Oceanology and Limnology
ISSN	0254-4059
	2017-07-15
出版年	2017
卷号	v.35 期号:04 页码:227-235
文献类型	CNKI期刊论文
摘要	Thirty sediment subsamples were recovered from the Iheya North hydrothermal field(with an average of 38 m away from the hydrothermal vent) in the middle Okinawa Trough.Samples were obtained by the ROV(Remote Operated Vehicle) Faxian during the virgin cruise of the R/V Kexue in 2014 with the application of push cores.The chemical compositions of the sediments show that the hydrothermal sediments near the hydrothermal vent are mainly composed of SO_3,ZnO and Fe_2O_3.Moreover,the hydrothermal sediments are also highly enriched in Pb,As,Sb,Hg,Se,Ag,Ba,Mo and Cd comparing with previous analysis results.On the other hand,the concentrations of Sr,Hg and Ag in studied sediments are strongly and positively correlated,these elements can be used as an hydrothermal indicator.In addition,a factor analysis of the sediments suggested that the sediments were mainly influenced by hydrothermal origin,and terrestrial and biogenic input are limited in studied area.It is also suggested that different stages of crystallization were involved in the formation of hydrothermal chimney from factor analysis.
关键词	hydrothermal vent hydrothermal sediments Okinawa Trough
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A010;A011;
CNKI专题名称	海洋学;地质学;
分类号	P736.21
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(Nos.XDA11030301,XDA11040301)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/189242
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 2.LaboratoryforMarineGeology,QingdaoNationalLaboratoryforMarineScienceandTechnology 3.UniversityofChineseAcademyofSciences
推荐引用方式 GB/T 7714	Hu QN,Zhang X,Jiang FQ,et al. Geochemical characteristics of hydrothermal sediments from Iheya North Knoll in the Okinawa Trough. 2017.