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Petrogenesis of Early-Permian sanukitoids from West Junggar, Northwest China: Implications for Late Paleozoic crustal growth in Central Asia

文献类型：期刊论文

作者Yin, Jiyuan1,2; Chen, Wen1; Xiao, Wenjiao2,3; Yuan, Chao4; Sun, Min5; Tang, Gongjian4; Yu, Shun1; Long, Xiaoping4; Cai, Keda3; Geng, Hongyan5
刊名TECTONOPHYSICS
出版日期2015-11-01
卷号662页码:385-397
关键词Sanuldtoid Crustal growth Late Paleozoic West Junggar Central Asia
DOI10.1016/j.tecto.2015.01.005
文献子类Article
英文摘要Sanukitoids and their equivalents are rare subduction-related rock types that have been found in modem arc settings and in Late Archean sequences. The investigation of sanukitoids is of particular importance to a better understanding of crust-forming processes and continental growth. In this paper we report zircon U-Pb and Ar-Ar ages and major element, trace element, and Sr-Nd-Hf isotope data for the Bieluagaxi dioritic pluton and dikes from the southern part of the West Junggar, NW China. These rocks formed in the Early Permian and show a remarkable geochemical affinity with Cenozoic sanukitoids of the Setouchi Volcanic Belt of SW Japan with high Mg-# (48-73) values, Cr (54-539 ppm), Ni (21-197 ppm) contents and Th/La (0.15-0.37) ratios and low Sr/Y ratios (16-27) and Sr (263-442 ppm) contents. They may be generated by the partial melting of subducting sediments, and subsequent melt-mantle interaction. Additionally, the sanukitoids are also widespread in the Karamay-Baogutu area of West Junggar accompanied by high Sr (average 713 ppm) contents and Sr/Y (50-130) ratios, and low Y (6.9-12.6 ppm) contents. The difference in petrochemical characteristics between the Baogutu-Karamay and Bieluagaxi sanukitoids can be explained by the difference in depth of initial melting, origin composition and fractional crystallization. The Baogutu-Karamay sanukitoids were probably formed under eclogitic conditions, while the Bieluagaxi sanukitoids were at a shallower depth. Moreover, the compositional similarity between continental-crust forming rocks and the Bieluagaxi sanuldtoids suggests that the sanukitoids genesis could be closely related to the process of continental crust formation. The Late Carboniferous-Early Permian sanukitoids in the West Junggar may be an indicator of anomalous thermal activity. Ridge subduction may play a crucial role in the evolution and growth of the continental crust in Central Asia. (C) 2015 Elsevier B.V. All rights reserved.
WOS关键词SETOUCHI VOLCANIC BELT ; HIGH-MG ANDESITES ; HIGH-MAGNESIAN ANDESITES ; TRACE-ELEMENT EVIDENCE ; SOUTHWEST JAPAN ARC ; A-TYPE GRANITE ; NW CHINA ; CONTINENTAL-CRUST ; RIDGE SUBDUCTION ; SOUTHERN ALASKA
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000366227400024
资助机构National Science Foundation of China(41390441 ; National Science Foundation of China(41390441 ; National Science Foundation of China(41390441 ; National Science Foundation of China(41390441 ; China Geological Survey(12120113015600) ; China Geological Survey(12120113015600) ; China Geological Survey(12120113015600) ; China Geological Survey(12120113015600) ; Chinese Ministry of Land and Resources(201211074-05) ; Chinese Ministry of Land and Resources(201211074-05) ; Chinese Ministry of Land and Resources(201211074-05) ; Chinese Ministry of Land and Resources(201211074-05) ; China Scholarship Council(201409110006) ; China Scholarship Council(201409110006) ; China Scholarship Council(201409110006) ; China Scholarship Council(201409110006) ; China Postdoctoral Science Foundation(138226) ; China Postdoctoral Science Foundation(138226) ; China Postdoctoral Science Foundation(138226) ; China Postdoctoral Science Foundation(138226) ; 41473053 ; 41473053 ; 41473053 ; 41473053 ; 41203026 ; 41203026 ; 41203026 ; 41203026 ; 41273012 ; 41273012 ; 41273012 ; 41273012 ; 41230207 ; 41230207 ; 41230207 ; 41230207 ; 41373034 ; 41373034 ; 41373034 ; 41373034 ; 41190075) ; 41190075) ; 41190075) ; 41190075) ; National Science Foundation of China(41390441 ; National Science Foundation of China(41390441 ; National Science Foundation of China(41390441 ; National Science Foundation of China(41390441 ; China Geological Survey(12120113015600) ; China Geological Survey(12120113015600) ; China Geological Survey(12120113015600) ; China Geological Survey(12120113015600) ; Chinese Ministry of Land and Resources(201211074-05) ; Chinese Ministry of Land and Resources(201211074-05) ; Chinese Ministry of Land and Resources(201211074-05) ; Chinese Ministry of Land and Resources(201211074-05) ; China Scholarship Council(201409110006) ; China Scholarship Council(201409110006) ; China Scholarship Council(201409110006) ; China Scholarship Council(201409110006) ; China Postdoctoral Science Foundation(138226) ; China Postdoctoral Science Foundation(138226) ; China Postdoctoral Science Foundation(138226) ; China Postdoctoral Science Foundation(138226) ; 41473053 ; 41473053 ; 41473053 ; 41473053 ; 41203026 ; 41203026 ; 41203026 ; 41203026 ; 41273012 ; 41273012 ; 41273012 ; 41273012 ; 41230207 ; 41230207 ; 41230207 ; 41230207 ; 41373034 ; 41373034 ; 41373034 ; 41373034 ; 41190075) ; 41190075) ; 41190075) ; 41190075)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62149]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位1.Chinese Acad Geol Sci, Inst Geol, State Key Lab Continental Tecton & Dynam, Lab Isotope Thermochronol, Beijing 100037, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi 830011, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Guangdong, Peoples R China
5.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China
推荐引用方式
GB/T 7714		 Yin, Jiyuan,Chen, Wen,Xiao, Wenjiao,et al. Petrogenesis of Early-Permian sanukitoids from West Junggar, Northwest China: Implications for Late Paleozoic crustal growth in Central Asia[J]. TECTONOPHYSICS,2015,662:385-397.
APA Yin, Jiyuan.,Chen, Wen.,Xiao, Wenjiao.,Yuan, Chao.,Sun, Min.,...&Liu, Xinyu.(2015).Petrogenesis of Early-Permian sanukitoids from West Junggar, Northwest China: Implications for Late Paleozoic crustal growth in Central Asia.TECTONOPHYSICS,662,385-397.
MLA Yin, Jiyuan,et al."Petrogenesis of Early-Permian sanukitoids from West Junggar, Northwest China: Implications for Late Paleozoic crustal growth in Central Asia".TECTONOPHYSICS 662(2015):385-397.

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来源：地质与地球物理研究所

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