中国科学院青藏高原研究所机构知识库
Advanced  
ITPCAS OpenIR  > 图书馆  > 期刊论文
学科主题: 地球科学::地质学
题名: Highly fractionated Late Eocene (similar to 35 Ma) leucogranite in the Xiaru Dome, Tethyan Himalaya, South Tibet
作者: Liu, ZC (Liu, Zhi-Chao)1, 2, 3; Wu, FY (Wu, Fu-Yuan)3; Ding, L (Ding, Lin)2; Liu, XC (Liu, Xiao-Chi)3; Wang, JG (Wang, Jian-Gang)3; Ji, WQ (Ji, Wei-Qiang)3
通讯作者: Liu, ZC
刊名: LITHOS
发表日期: 2016
DOI: 10.1016/j.lithos.2015.11.026
卷: 240-243, 期:0, 页:337-354
收录类别: SCI
合作性质: 国内
文章类型: Article
英文摘要: The Xiaru dome is located in the middle section of the North Himalayan Gneiss Domes belt in southern Tibet The leucogranite, which crops out in the core of the Xiaru dome, is a typical medium-grained garnet + tourmaline + muscovite leucogranite. U-(Th)-Pb dating of zircon and monazite from the leucogranite yielded ages of approximately 35 Ma. This finding supports a growing body of evidence indicating that an extensive magmatic event occurred during the late Eocene in the Himalayas. This leucogranite is strongly peraluminous with A/CNK values of 1.08-1.52 and characterized by evolved geochemical composition with high contents of SiO2 and alkali elements; low levels of CaO, MgO, TiO2, and FeOT; enriched large-ion lithophile elements (such as Rb); and depleted of high-field-strength elements (such as Nb, Zr, and Hf). The non-CHARAC (CHarge-And-Radius-Controlled) trace element behaviors, which are typical of a highly fractionated granite system, were recorded in the whole rock and the accessory minerals of the Xiaru leucogranite. Furthermore, the magmatic zircon overgrowths have extremely high content of Hf, consistent with those from the highly fractionated aqueous-like fluid system. In addition, whole-rock geochemical fractionation trends were observed, which can be explained by crystal fractionation of biotite, K-feldspar, zircon, xenotime, and monazite. These geochemical features indicate that the Xiaru leucogranite is a typical highly fractionated granite. The geochronological and geochemical features of the inherited zircons from the Xiaru leucogranite show a close affinity to those of the country rocks, suggesting a certain degree of assimilation from the country rocics during melt ascent and emplacement. Although a restricted range of epsilon(Hf)(t) values from -12.8 to -6.6 with Hf T-DM2 model ages of 1.2-1.6 Ga was obtained from the late Eocene zircons, it is invalid to constrain the source of the parental magma due to the strong fractionation and assimilation processes. (C) 2015 Elsevier B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000372383600020
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7871
Appears in Collections:图书馆_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
V.240-243 337-354 2016.pdf(3562KB)期刊论文作者接受稿开放获取View 联系获取全文

作者单位: 1.Sun Yat Sen Univ, Sch Earth Sci & Geol Engn, Guangzhou 510275, Guangdong, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China

Recommended Citation:
Liu, ZC ,Wu, FY ,Ding, L ,et al. Highly fractionated Late Eocene (similar to 35 Ma) leucogranite in the Xiaru Dome, Tethyan Himalaya, South Tibet[J]. LITHOS,2016,240-243(0):337-354.
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Liu, ZC (Liu, Zhi-Chao)]'s Articles
[Wu, FY (Wu, Fu-Yuan)]'s Articles
[Ding, L (Ding, Lin)]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Liu, ZC (Liu, Zhi-Chao)]‘s Articles
[Wu, FY (Wu, Fu-Yuan)]‘s Articles
[Ding, L (Ding, Lin)]‘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
文件名: V.240-243 337-354 2016.pdf
格式: Adobe PDF
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 © 2007-2017  中国科学院青藏高原研究所 - Feedback
Powered by CSpace