ITPCAS OpenIR  > 图书馆
A syn-collisional model for Early Cretaceous magmatism in the northern and central Lhasa subterranes
Chen, SS (Chen, Sheng-Sheng)1,2; Shi, RD (Shi, Ren-Deng)1,3; Gong, XH (Gong, Xiao-Han)1,2; Liu, DL (Liu, De-Liang)1; Huang, QS (Huang, Qi-Shuai)1; Yi, GD (Yi, Guo-Ding)1,2; Wu, K (Wu, Kang)1,2; Zou, HB (Zou, Hai-Bo)4; Chen, SS
Source PublicationGONDWANA RESEARCH
2017
Volume41Issue:0Pages:93-109
DOI10.1016/j.gr.2015.04.008
AbstractVoluminous Early Cretaceous volcanic rocks from the northern and central Lhasa subterranes contain important information on the tectono-magmatic processes. In this contribution, we focus on the Lower Cretaceous volcanic rocks in the Nagqu area, northern Lhasa subterrane, and present their zircon LA-ICP-MS U-Pb ages, in situ Hf isotopic data, whole-rock major and trace element compositions, and Sr-Nd isotopic data. The Nagqu volcanic rocks are high-K calc-alkaline to shoshonitic (K2O: 1.41-8.52 wt.%; K2O/Na2O: 0.36-6.65) and feature similar geochemical characteristics (e.g., subparallel distribution of incompatible elements and REEs). Assimilation-fractional crystallization of magmas from identical source (rather than diverse magma sources) was mainly responsible for the formation of the diverse volcanic rock types. High Hf/Sm (>0.7) and high U/Yb whole-rock values and low Y values in zircon grains suggest the involvement of terrigenous components rather than subducted oceanic crust in the magma source. Tectonic discrimination diagrams, sedimentary environment (marine-continental transition), magma compositions (K-rich and terrigenous components), crustal thickening, and spatio-temporal variations in subduction, syn-collisional and post-collisional processes, indicate that the geodynamic setting of the Early Cretaceous magmatism was associated with the collision between the Lhasa and Qiangtang terranes. The high-K characteristics were inherited from the melts derived from the partial melting of lower metasomatized lithosphericmantle (the K-rich layer), which was transported to great depths by the continuously thickening lithosphere, eventually triggering melting. (C) 2015 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
Subject Area地质学
WOS IDWOS:000397873300007
Language英语
Indexed BySCI
Keyword1985 TIBET GEOTRAVERSE BANGONG-NUJIANG OCEAN SLAB BREAK-OFF VOLCANIC-ROCKS SOUTHERN TIBET TECTONIC EVOLUTION U-PB GEOCHEMICAL DISCRIMINATION CENOZOIC VOLCANISM EASTERN ANATOLIA
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary ; Geology
Cooperation Status国际
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8384
Collection图书馆
Corresponding AuthorChen, SS
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China.
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
4.Auburn Univ, Dept Geosci, Auburn, AL 36849 USA.
Recommended Citation
GB/T 7714
Chen, SS ,Shi, RD ,Gong, XH ,et al. A syn-collisional model for Early Cretaceous magmatism in the northern and central Lhasa subterranes[J]. GONDWANA RESEARCH,2017,41(0):93-109.
APA Chen, SS .,Shi, RD .,Gong, XH .,Liu, DL .,Huang, QS .,...&Chen, SS.(2017).A syn-collisional model for Early Cretaceous magmatism in the northern and central Lhasa subterranes.GONDWANA RESEARCH,41(0),93-109.
MLA Chen, SS ,et al."A syn-collisional model for Early Cretaceous magmatism in the northern and central Lhasa subterranes".GONDWANA RESEARCH 41.0(2017):93-109.
Files in This Item:
File Name/Size DocType Version Access License
V.41 93-109 2017.pdf(1811KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen, SS (Chen, Sheng-Sheng)]'s Articles
[Shi, RD (Shi, Ren-Deng)]'s Articles
[Gong, XH (Gong, Xiao-Han)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, SS (Chen, Sheng-Sheng)]'s Articles
[Shi, RD (Shi, Ren-Deng)]'s Articles
[Gong, XH (Gong, Xiao-Han)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, SS (Chen, Sheng-Sheng)]'s Articles
[Shi, RD (Shi, Ren-Deng)]'s Articles
[Gong, XH (Gong, Xiao-Han)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: V.41 93-109 2017.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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