IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Devonian arc-related granitoids in the Northwestern Chinese Tianshan, Central Asian Orogenic Belt: implications for the bending of the Kazakhstan Orocline
Sun, Minjia1,2; Cai, Keda1,3,4; Sun, Min5; Wan, Bo6; Wang, Xiangsong5; Bao, Zihe1,2
2020-03-15
Source PublicationINTERNATIONAL GEOLOGY REVIEW
ISSN0020-6814
Pages19
AbstractThe Kazakhstan collage system, occurring as a tightly curved configuration with oroclinal structures, holds significant information to uncover the orogenic process and continental geodynamics of the CAOB. Palaeomagnetic data and regional geological correlation document that Kazakhstan orocline was not formed until the Middle Devonian, broadly corresponding to the time of Junggar-Ocean subduction. To exert temporal constraints on the subduction and understand associated magmatism, we conducted zircon U-Pb dating and Hf isotopic analysing as well as whole-rock geochemical and Nd-Sr study for the Devonian magmatic rocks in the Northwestern Chinese Tianshan. Zircon U-Pb dating results showed two phases of magmatism of 390.6 +/- 1.8 Ma and 371.2 +/- 2.4 Ma, respectively. These rocks have monzogranite compositions, with high SiO2 (75.9-77.9 wt.% and 74.1 wt.%), medium-high K2O (2.06-3.85 wt.% and 3.81-4.82 wt.%) concentrations, showing calc-alkaline and peraluminous characteristics (A/CNK = 1.02-1.03 and 1.03-1.09). They also display evident depletions in Ba, Nb, Ta, P, and Ti relative to LREEs, Rb, and Th, showing striking features of subduction-related magma. The variations of zircon epsilon(Hf)(t) values (-0.60 to +5.53 and +2.12 to +8.39 for two samples) may suggest an extensive interaction between old crustal rocks and mantle-derived juvenile components. Therefore, the Middle-Late Devonian magmatism can be correlated with Devonian Volcanic Belt in Kazakhstan, which constituted a magmatic belt generated by the subduction of Junggar-Ocean plate. The steady-state distributions and long-term geochemical variations of Early Devonian-Early Carboniferous arc-related magmatism in the Northwestern Chinese Tianshan allow us to conclude the lack of retreat of magmatic belts in the southern limb of the Kazakhstan Orocline. Accordingly, rapid retreat in the west and north limbs of orocline vs. normal subduction in the Northwestern Chinese Tianshan, supports the asymmetric retreat model interpreting the first stage of bending of Kazkhstan collage system.
KeywordDevonian arc-related granitoids the Northwestern Chinese Tianshan Kazakhstan Orocline sunduction zone retreating zircon U-Pb geochronology
DOI10.1080/00206814.2020.1737975
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; fundamental research funds for the Central Universities ; fundamental research funds for the Central Universities ; Hong Kong RGC ; Hong Kong RGC ; '973 project' grant ; '973 project' grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; fundamental research funds for the Central Universities ; fundamental research funds for the Central Universities ; Hong Kong RGC ; Hong Kong RGC ; '973 project' grant ; '973 project' grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; fundamental research funds for the Central Universities ; fundamental research funds for the Central Universities ; Hong Kong RGC ; Hong Kong RGC ; '973 project' grant ; '973 project' grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; fundamental research funds for the Central Universities ; fundamental research funds for the Central Universities ; Hong Kong RGC ; Hong Kong RGC ; '973 project' grant ; '973 project' grant
WOS KeywordZIRCON U-PB ; A-TYPE GRANITES ; I-TYPE GRANITES ; WESTERN TIANSHAN ; YILI BLOCK ; NW CHINA ; TECTONIC EVOLUTION ; VOLCANIC-ROCKS ; CONTINENTAL-CRUST ; GEOCHEMICAL CHARACTERISTICS
Language英语
Funding ProjectNational Natural Science Foundation of China[41872082] ; National Natural Science Foundation of China[41622205] ; fundamental research funds for the Central Universities[2652018116] ; fundamental research funds for the Central Universities[2652018135] ; Hong Kong RGC[17302317] ; Hong Kong RGC[17303415] ; '973 project' grant[2014CB448000]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; fundamental research funds for the Central Universities ; fundamental research funds for the Central Universities ; Hong Kong RGC ; Hong Kong RGC ; '973 project' grant ; '973 project' grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; fundamental research funds for the Central Universities ; fundamental research funds for the Central Universities ; Hong Kong RGC ; Hong Kong RGC ; '973 project' grant ; '973 project' grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; fundamental research funds for the Central Universities ; fundamental research funds for the Central Universities ; Hong Kong RGC ; Hong Kong RGC ; '973 project' grant ; '973 project' grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; fundamental research funds for the Central Universities ; fundamental research funds for the Central Universities ; Hong Kong RGC ; Hong Kong RGC ; '973 project' grant ; '973 project' grant
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000520344500001
PublisherTAYLOR & FRANCIS INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95591
Collection岩石圈演化国家重点实验室
Corresponding AuthorCai, Keda
Affiliation1.Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Inst Ecol & Geog, Urumqi, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing, Peoples R China
4.China Univ Geosci, Sch Earth Sci & Resources, Beijing, Peoples R China
5.Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Sun, Minjia,Cai, Keda,Sun, Min,et al. Devonian arc-related granitoids in the Northwestern Chinese Tianshan, Central Asian Orogenic Belt: implications for the bending of the Kazakhstan Orocline[J]. INTERNATIONAL GEOLOGY REVIEW,2020:19.
APA Sun, Minjia,Cai, Keda,Sun, Min,Wan, Bo,Wang, Xiangsong,&Bao, Zihe.(2020).Devonian arc-related granitoids in the Northwestern Chinese Tianshan, Central Asian Orogenic Belt: implications for the bending of the Kazakhstan Orocline.INTERNATIONAL GEOLOGY REVIEW,19.
MLA Sun, Minjia,et al."Devonian arc-related granitoids in the Northwestern Chinese Tianshan, Central Asian Orogenic Belt: implications for the bending of the Kazakhstan Orocline".INTERNATIONAL GEOLOGY REVIEW (2020):19.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sun, Minjia]'s Articles
[Cai, Keda]'s Articles
[Sun, Min]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sun, Minjia]'s Articles
[Cai, Keda]'s Articles
[Sun, Min]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sun, Minjia]'s Articles
[Cai, Keda]'s Articles
[Sun, Min]'s Articles
Terms of Use
No data!
Social Bookmark/Share
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit Add to Technorati
All comments (0)
No comment.
 

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