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An Early Permian (ca. 280 Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?

文献类型：期刊论文

作者Dan, Wei1,2; Li, Xiaa-Hua2; Wang, Qiang1; Tang, Gong-Jian1; Liu, Yu2
刊名LITHOS
出版日期2014-09-01
卷号204页码:144-158
关键词Alxa Block Early Permian Silicic large igneous provinces Mantle plume Zircon Hf-O isotopes
ISSN号0024-4937
DOI10.1016/j.lithos.2014.01.018
文献子类Article
英文摘要Silicic igneous provinces have important implications for geodynamic processes. In this study, we show that the predominantly Early Permian (ca. 280 Ma) granitoids in the Alxa Block correspond to an important silicic igneous province with areal distribution in Northwest (NW) China. We present zircon U-Pb age and Hf-O isotopic, and whole-rock geochemical and Sr-Nd isotopic data for the newly identified I- and A-type granites and high Sr/Y granodiorites in the Bayannuoergong batholith, and gabbros, diorites and quartz diorites in the Bijiertai Complex, Alxa Block. The I-type monzogranites, granodiorites and A-type granites of the Bayannuoergong batholith were probably generated by mixing between crust- and mantle-derived magmas, partial melting of a thickened eclogitic lower crust and underplated mantle-derived mafic rocks, respectively. The gabbros, quartz diorites and diorites of the Bijiertai Complex were likely generated by partial melting of the lithospheric mantle, differentiation from basaltic magmas and partial melting of the middle crust, respectively. Despite pronounced geochemical and isotopic heterogeneity of these rocks, new SIMS and LA-ICP-MS U-Pb zircon dating indicates that they were formed over a very short time interval at ca. 280 Ma. Thus, the mantle, lower crust and middle crust underwent widespread melting at this time. Given that these magmatic rocks have no spatial or temporal zonation, and were probably formed in an extensional setting, we suggest that the ca. 280 Ma Tarim mantle plume in NW China may have triggered the magmatic flare-up of the Alxa silicic igneous province. (C) 2014 Elsevier B.V. All rights reserved.
WOS关键词A-TYPE GRANITES ; ASIAN OROGENIC BELT ; UNDERPLATED BASALTIC CRUST ; THICKENED LOWER CRUST ; SLAB-DERIVED MELTS ; HF-O ISOTOPES ; GEOCHEMICAL CHARACTERISTICS ; TARIM BASIN ; PB GEOCHRONOLOGY ; VOLCANIC-ROCKS
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000342260400013
出版者ELSEVIER SCIENCE BV
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; 41303018 ; 41303018 ; 41303018 ; 41303018 ; 41121002) ; 41121002) ; 41121002) ; 41121002) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; 41303018 ; 41303018 ; 41303018 ; 41303018 ; 41121002) ; 41121002) ; 41121002) ; 41121002) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; 41303018 ; 41303018 ; 41303018 ; 41303018 ; 41121002) ; 41121002) ; 41121002) ; 41121002) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB03010600) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; Major State Basic Research Program (973 Program) of People's Republic of China(2011CB808906) ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; National Natural Science Foundation of China(41025006 ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; China Postdoctoral Science Foundation(2013M531880) ; 41303018 ; 41303018 ; 41303018 ; 41303018 ; 41121002) ; 41121002) ; 41121002) ; 41121002)
源URL[http://ir.iggcas.ac.cn/handle/132A11/86015]  
专题中国科学院地质与地球物理研究所
通讯作者Dan, Wei
作者单位1.Chinese Acad Sci, State Key Lab Isotope Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Dan, Wei,Li, Xiaa-Hua,Wang, Qiang,et al. An Early Permian (ca. 280 Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?[J]. LITHOS,2014,204:144-158.
APA Dan, Wei,Li, Xiaa-Hua,Wang, Qiang,Tang, Gong-Jian,&Liu, Yu.(2014).An Early Permian (ca. 280 Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?.LITHOS,204,144-158.
MLA Dan, Wei,et al."An Early Permian (ca. 280 Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?".LITHOS 204(2014):144-158.

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来源：地质与地球物理研究所

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