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Permian Tectonic Evolution in the Middle Part of Central Asian Orogenic Belt: Evidence from Newly Identified Volcanic Rocks in the Bilutu Area, Inner Mongolia

文献类型：期刊论文

作者Wang Shijie2; Liu Yang3; Dong Xiaojie2; Xu Zhongyuan2; Wang Wenlong3; Li Shichao2; Shi Qiang2; Cui Weilong1
刊名ACTA GEOLOGICA SINICA-ENGLISH EDITION
出版日期2019-10-01
卷号93期号:5页码:1281-1299
ISSN号1000-9515
关键词Permian volcanic rocks Bilutu Bainaimiao Arc Belt North China Block Central Asian Orogenic Belt
DOI10.1111/1755-6724.14361
英文摘要In this study, zircon U-Pb ages, geochemical and Lu-Hf isotopic data are presented for the newly identified volcanic rocks which were considered as Bainaimiao group in Bainaimiao Arc Belt (BAB), Inner Mongolia, which could provide important constraints on the evolution of the northern part of North China Block (NCB) and BAB. Basalt to basaltic andesite and andesite to dacite were collected from two sections, which showed eruption ages of 278.2 +/- 4.1 Ma and 258.3 +/- 3.0 Ma respectively. All samples are characterized by high abundances in Al2O3, LREEs, and LILEs, but depleted in HFSEs. Together with high Mg-# ratios and low K/tholeiite to calc-alkaline series, these features indicated that basalt to andesite was likely derived from relatively low degree partial melting of the subduction-fluid related mantle in the spinel phase. And dacite was mainly from the partial melting of crust, then affected by mantle. All samples barely went through fractional crystallization process with the slight Eu anomaly. Compared with the contemporary basalt in NCB, rocks in BAB have a complex composition of zircon and a more positive epsilon(Hf) (t) value (-6.6-6.4), indicating that they had different magma sources of rocks. Though with different basements, NCB and BAB have become an integrated whole before 278 Ma. Therefore, it could be concluded that NCB and BAB belonged to the active continental margin and the PAO had not closed yet until late Permian and then it disappeared gradually and the CAOB developed into a condition of syn-post collision.
WOS关键词NORTH CHINA CRATON ; TRACE-ELEMENT COMPOSITION ; SOLONKER SUTURE ZONE ; U-PB AGE ; CONTINENTAL GROWTH ; CRUSTAL GROWTH ; FINAL CLOSURE ; HF ISOTOPES ; GEOCHEMISTRY ; ZIRCON
资助项目National Natural Science Foundation of China[41872203] ; National Natural Science Foundation of China[41872194] ; China Geological Survey Project[DD2016041-16] ; China Geological Survey Project[DD20190038-2]
WOS研究方向Geology
语种英语
出版者WILEY
WOS记录号WOS:000493023200009
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey Project ; China Geological Survey Project
源URL[http://ir.iggcas.ac.cn/handle/132A11/95712]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Dong Xiaojie
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Jilin Univ, Coll Earth Sci, Changchun 130061, Jilin, Peoples R China
3.China Geol Survey, Tianjin Ctr Geol Survey, Tianjin 300170, Peoples R China
推荐引用方式
GB/T 7714		 Wang Shijie,Liu Yang,Dong Xiaojie,et al. Permian Tectonic Evolution in the Middle Part of Central Asian Orogenic Belt: Evidence from Newly Identified Volcanic Rocks in the Bilutu Area, Inner Mongolia[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2019,93(5):1281-1299.
APA Wang Shijie.,Liu Yang.,Dong Xiaojie.,Xu Zhongyuan.,Wang Wenlong.,...&Cui Weilong.(2019).Permian Tectonic Evolution in the Middle Part of Central Asian Orogenic Belt: Evidence from Newly Identified Volcanic Rocks in the Bilutu Area, Inner Mongolia.ACTA GEOLOGICA SINICA-ENGLISH EDITION,93(5),1281-1299.
MLA Wang Shijie,et al."Permian Tectonic Evolution in the Middle Part of Central Asian Orogenic Belt: Evidence from Newly Identified Volcanic Rocks in the Bilutu Area, Inner Mongolia".ACTA GEOLOGICA SINICA-ENGLISH EDITION 93.5(2019):1281-1299.

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来源：地质与地球物理研究所

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