ITPCAS OpenIR  > 图书馆
Permo-Triassic arc-like granitoids along the northern Lancangjiang zone, eastern Tibet: Age, geochemistry, Sr-Nd-Hf isotopes, and tectonic implications
Wang, XY (Wang, Xinyu)1; Wang, SF (Wang, Shifeng)1; Wang, C (Wang, Chao)2; Tang, WK (Tang, Wenkun)1
Source PublicationLITHOS
2018-05-01
Volume308Issue:0Pages:278-293
DOI10.1016/j.lithos.2018.03.008
AbstractLarge volumes of Permo-Triassic granitoids are exposed along the Northern Lancangjiang zone, eastern Tibet, and these rocks provide insights into the tectonic evolution of the Paleo-Tethys Ocean. We conducted detailed geological fieldwork and geochemical analysis of the Xiaochangdu and Kagong plutons that crop out along the Northern Lancangjiang magmatic belt. Zircon U-Pb data constrain the emplacement of the Xiaochangdu quartz diotites to between similar to 263 and similar to 257 Ma, and the Kagong granites and diorites to between similar to 234 and similar to 232 Ma. The Xiaochangdu quartz diorites are enriched in light rare earth (LREE) and large ion lithophile elements (LILE), depleted in high field strength elements (HFSE), have low (Sr-87/Sr-86); ratios, and near-positive epsilon(Nd) (t) ( -0.26 to 1.58) and epsilon(Hf)(t) (0.68-8.83) values, similar to typical subduction- related mantle-derived arc magmas. They are also characterized by high Al2O3 concentrations and low Nb/U (3.48-7.59) and Ce/Pb (3.22-4.86) ratios, indicating that their mantle source was modified by subducted pelagic sediments; Coeval granites and diorites from the Kagong pluton exhibit low A/CNK values, high LREE/HREE (heavy rare earth element) ratios, enrichment in LILE, and depletion in HFSE, also characteristic of typical arc magmas. Their variable SiO2 contents (57%- 75%),(Sr-87/Sr-86)(i) ratios, and epsilon(Nd) (t) (1.02-4.49) and epsilon(Hf)(t) (2.52-6.93) values, and relatively high zircon saturation temperatures (721-827 degrees C), suggest underplating of mantle-derived mafic melts beneath the lower crust. Their magmatic evolution can be explained using a MASH model.
WOS IDWOS:000446791000018
Language英语
Indexed BySCIE
KeywordMETAMORPHIC CORE COMPLEXES DEEP-CRUSTAL STRUCTURE FELSIC IGNEOUS ROCKS PALEO-TETHYS OROGEN LU FAULT BELT SW CHINA SOUTHWEST CHINA CONTINENTAL SUBDUCTION SOUTHERN LANCANGJIANG CENTRAL QIANGTANG
WOS Research AreaGeochemistry & Geophysics ; Mineralogy
WOS SubjectGeochemistry & Geophysics ; Mineralogy
Cooperation Status国内
ISSN0024-4937
Department高寒生态重点实验室
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8648
Collection图书馆
Affiliation1.Chinese Acad Geol Sci, Key Lab Neotecton Movement & GeoHazard, Minist Land & Resources, Inst Geotmech, Beijing 100081, Peoples R China;
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Wang, XY ,Wang, SF ,Wang, C ,et al. Permo-Triassic arc-like granitoids along the northern Lancangjiang zone, eastern Tibet: Age, geochemistry, Sr-Nd-Hf isotopes, and tectonic implications[J]. LITHOS,2018,308(0):278-293.
APA Wang, XY ,Wang, SF ,Wang, C ,&Tang, WK .(2018).Permo-Triassic arc-like granitoids along the northern Lancangjiang zone, eastern Tibet: Age, geochemistry, Sr-Nd-Hf isotopes, and tectonic implications.LITHOS,308(0),278-293.
MLA Wang, XY ,et al."Permo-Triassic arc-like granitoids along the northern Lancangjiang zone, eastern Tibet: Age, geochemistry, Sr-Nd-Hf isotopes, and tectonic implications".LITHOS 308.0(2018):278-293.
Files in This Item:
File Name/Size DocType Version Access License
2018188.pdf(8541KB)期刊论文出版稿开放获取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
[Wang, XY (Wang, Xinyu)]'s Articles
[Wang, SF (Wang, Shifeng)]'s Articles
[Wang, C (Wang, Chao)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, XY (Wang, Xinyu)]'s Articles
[Wang, SF (Wang, Shifeng)]'s Articles
[Wang, C (Wang, Chao)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, XY (Wang, Xinyu)]'s Articles
[Wang, SF (Wang, Shifeng)]'s Articles
[Wang, C (Wang, Chao)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2018188.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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