Petrogenesis of Early Carboniferous adakitic dikes, Sawur region, northern West Junggar, NW China: Implications for geodynamic evolution

doi:10.1016/j.gr.2014.01.016

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	Petrogenesis of Early Carboniferous adakitic dikes, Sawur region, northern West Junggar, NW China: Implications for geodynamic evolution
	Yin, Jiyuan 1,2; Chen, Wen 1; Yuan, Chao 3; Yu, Shun 1; Xiao, Wenjiao 2,4; Long, Xiaoping 3; Li, Jie 1; Sun, Jingbo 1
刊名	GONDWANA RESEARCH
	2015-06-01
卷号	27 期号:4 页码:1630-1645
关键词	Adakite Sawur Subduction West Junggar China
DOI	10.1016/j.gr.2014.01.016
文献子类	Article
英文摘要	Adakitic dikes are widespread in the Sawur region, northern West Junggar, northwestern China. Zircon U-Pb analyses of the dikes have yielded consistent ages of ca. 334 Ma. The dikes are characterized by relatively high SiO2 (55.5-61.8 wt.%), Al2O3 (14.5-16.3 wt.%), and Sr (468-1005 ppm), and low Y (10.1-14.1 ppm) and Yb (0.93-1.39 ppm) contents, with high Sr/Y (34-74) ratios and slight Eu anomalies, which are analogous to those of slab-derived adakites. In addition, the dikes are relatively MgO-rich (1.75-3.57 wt.%; Mg-# = 44-56), with high Th/Yb ratios and positive epsilon Nd ((334 ma)) (+6.2 to +6.5) and epsilon Hf ((334 ma)) (+11.3 to +15.8) values. The data suggest that the dikes were generated by partial melting of subducted oceanic crust and overlying sediments. However, these Early Carboniferous adakitic rocks and associated I-type granites in the northern part of West Junggar are petrochemically distinct from the Late Carboniferous adakitic plutons from the southern part of West Junggar. The latter are associated with charnockites, A-type granites, tholeiites, and Nb-enriched, alkaline basalts, as well as magnesian dikes, which were generated by ridge subduction during the Late Carboniferous. The distinct lithological association of the Early Carboniferous adakites is consistent with flat slab subduction, which was characterized by anomalous heating of the slab and consequential partial melting to generate adakitic magma. After generation of the Early Carboniferous adakites, the subducting slab cooled, reverted to a more normal subduction angle in the late Early Carboniferous, and was associated with more typical I-type granite arc magmatism. (C) 2014 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
WOS关键词	ASIAN OROGENIC BELT ; TRONDHJEMITE-GRANODIORITE TTG ; TRACE-ELEMENT EVIDENCE ; THICKENED LOWER CRUST ; U-PB GEOCHRONOLOGY ; CONTINENTAL-CRUST ; ISOTOPE EVIDENCE ; ICP-MS ; SR-ND ; ACCRETIONARY OROGENESIS
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000355024800021
资助机构	National Basic Research Program of China (973 Program)(2014CB440801) ; National Basic Research Program of China (973 Program)(2014CB440801) ; National Basic Research Program of China (973 Program)(2014CB440801) ; National Basic Research Program of China (973 Program)(2014CB440801) ; National Science Foundation of China(41203026 ; National Science Foundation of China(41203026 ; National Science Foundation of China(41203026 ; National Science Foundation of China(41203026 ; 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) ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences(J1209) ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences(J1209) ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences(J1209) ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences(J1209) ; State Key Laboratory of Continental Tectonics and Dynamics ; State Key Laboratory of Continental Tectonics and Dynamics ; State Key Laboratory of Continental Tectonics and Dynamics ; State Key Laboratory of Continental Tectonics and Dynamics ; State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences(SKLIG-KF-13-05) ; State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences(SKLIG-KF-13-05) ; State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences(SKLIG-KF-13-05) ; State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences(SKLIG-KF-13-05) ; 41273012 ; 41273012 ; 41273012 ; 41273012 ; 41230207 ; 41230207 ; 41230207 ; 41230207 ; 41390441 ; 41390441 ; 41390441 ; 41390441 ; 41190075) ; 41190075) ; 41190075) ; 41190075) ; National Basic Research Program of China (973 Program)(2014CB440801) ; National Basic Research Program of China (973 Program)(2014CB440801) ; National Basic Research Program of China (973 Program)(2014CB440801) ; National Basic Research Program of China (973 Program)(2014CB440801) ; National Science Foundation of China(41203026 ; National Science Foundation of China(41203026 ; National Science Foundation of China(41203026 ; National Science Foundation of China(41203026 ; 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) ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences(J1209) ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences(J1209) ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences(J1209) ; Outlay Research Fund of Institute of Geology, Chinese Academy of Geological Sciences(J1209) ; State Key Laboratory of Continental Tectonics and Dynamics ; State Key Laboratory of Continental Tectonics and Dynamics ; State Key Laboratory of Continental Tectonics and Dynamics ; State Key Laboratory of Continental Tectonics and Dynamics ; State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences(SKLIG-KF-13-05) ; State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences(SKLIG-KF-13-05) ; State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences(SKLIG-KF-13-05) ; State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences(SKLIG-KF-13-05) ; 41273012 ; 41273012 ; 41273012 ; 41273012 ; 41230207 ; 41230207 ; 41230207 ; 41230207 ; 41390441 ; 41390441 ; 41390441 ; 41390441 ; 41190075) ; 41190075) ; 41190075) ; 41190075)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62496]
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, Lab Isotope Thermochronol, State Key Lab Continental Tecton & Dynam, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Guangdong, Peoples R China 4.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Yin, Jiyuan,Chen, Wen,Yuan, Chao,et al. Petrogenesis of Early Carboniferous adakitic dikes, Sawur region, northern West Junggar, NW China: Implications for geodynamic evolution[J]. GONDWANA RESEARCH,2015,27(4):1630-1645.
APA	Yin, Jiyuan.,Chen, Wen.,Yuan, Chao.,Yu, Shun.,Xiao, Wenjiao.,...&Sun, Jingbo.(2015).Petrogenesis of Early Carboniferous adakitic dikes, Sawur region, northern West Junggar, NW China: Implications for geodynamic evolution.GONDWANA RESEARCH,27(4),1630-1645.
MLA	Yin, Jiyuan,et al."Petrogenesis of Early Carboniferous adakitic dikes, Sawur region, northern West Junggar, NW China: Implications for geodynamic evolution".GONDWANA RESEARCH 27.4(2015):1630-1645.