中国科学院海洋研究所机构知识库
Advanced  
IOCAS-IR  > 海洋地质与环境重点实验室  > 期刊论文
题名: Geochemical characteristics of major and trace elements in the Okinawa Trough basaltic glass
作者: Guo, Kun1,2,3; Zhai, Shikui3; Yu, Zenghui3; Zeng, Zhigang1; Wang, Xiaoyuan1; Yin, Xuebo1
刊名: ACTA OCEANOLOGICA SINICA
出版日期: 2018-02-01
卷号: 37, 期号:2, 页码:14-24
关键词: Okinawa Trough ; basaltic glass ; geochemistry ; magmatic evolution ; subducted component
DOI: 10.1007/s13131-017-1075-2
文章类型: Article
英文摘要: The Okinawa Trough (OT) is a back-arc basin at an initial spreading stage that is under the influence of subduction of the Philippine Sea Plate. In this study, we analyzed the geochemical compositions of basaltic glass in the OT and discussed the effects of different magmatic sources, evolution, and subducted components in basalts. Our results showed that the middle and southern regions of the OT exhibit characteristics consistent with an iron-rich tholeiite series. Trace element proportions conform to the typical spider diagram pattern characteristic of back-arc basin basalts, rich in large ion lithophile elements (LILEs) including Rb, Ba, Pb, U, and Th, while depleted in high field-strength elements (HFSEs) including Nb, Ta, Zr, Hf, and Ti. The distribution of rare earth elements (REEs) is also consistent with enrichment by right-leaning light rare earth elements (LREEs). The addition of enriched mantle type I (EMI) materials as well as mantle heterogeneity may have led to variable degrees of enrichment in different regions. The magma source of the middle trough has undergone crystallization towards pyroxene, while development of plagioclase was restricted partly, and the crystallization of spinel and olivine ceased altogether. At the same time, crystallization of the southern OT magma source was dominated by olivine and including the formation of plagioclase, pyroxene, and magnetite (or titanomagnetite). Finally, the results of this study showed that 90% Th, 95% Ba in the southern basalt, 50%-70% Th and 70%-90% Ba in the middle basalt originated from subducted component. Different subducted component influence may be due to different subduction zone structural feature.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000425168200002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.qdio.ac.cn/handle/337002/154363
Appears in Collections:海洋地质与环境重点实验室_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266071, Peoples R China
3.Ocean Univ China, Key Lab Submarine Geosci & Prospect, Minist Educ, Qingdao 266100, Peoples R China
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Guo, Kun]'s Articles
[Zhai, Shikui]'s Articles
[Yu, Zenghui]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Guo, Kun]‘s Articles
[Zhai, Shikui]‘s Articles
[Yu, Zenghui]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院海洋研究所 - Feedback
Powered by CSpace