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Paleozoic accretionary orogenesis in the eastern Beishan orogen: Constraints from zircon U-Pb and Ar-40/Ar-39 geochronology

文献类型：期刊论文

作者Ao, Songjian1; Xiao, Wenjiao1,2,3; Windley, Brian F.4; Mao, Qigui5; Han, Chunming1; Zhang, Ji'en1; Yang, Liekun1; Geng, Jianzhen6
刊名GONDWANA RESEARCH
出版日期2016-02-01
卷号30页码:224-235
关键词Beishan orogenic belt Xiaohuangshan ophiolite Detrital zircon age Ar-Ar dating Altaids
DOI10.1016/j.gr.2015.03.004
文献子类Article
英文摘要The continental growth mechanism of the Altaids in Central Asia is still in controversy between models of continuous subduction-accretion versus punctuated accretion by closure of multiple oceanic basins. The Beishan orogenic belt, located in the southern Altaids, is a natural laboratory to address this controversy. Key questions that are heavily debated are: the closure time and subduction polarity of former oceans, the emplacement time of ophiolites, and the styles of accretion and collision. This paper reports new structural data, U-Pb and Ar-Ar ages from the eastern Beishan orogen that provide information on the accretion process and tectonic affiliation of various terranes. Our geochronological and structural results show that the younging direction of accretion was northwards and the subduction zone dipped southwards under the northern margin of the Shuangyingshan micro-continent. This long-lived and continuous accretion process formed the Hanshan accretionary prism. Our field investigations show that the emplacement of the Xiaohuangshan ophiolite was controlled by oceanic crust subduction beneath the forearc accretionary prism of the Shuangyingshan-Mazongshan composite arc to the south. Moreover, we address the age and terrane affiliation of lithologies in the eastern Beishan orogen through detrital zircon geochronology of meta-sedimentary rocks. We provide new information on the ages, subduction polarities, and affiliation of constituent structural units, as well as a new model of tectonic evolution of the eastern Beishan orogen. The accretionary processes and crustal growth of Central Asia were the result of multiple sequences of accretion and collision of manifold terranes. (C) 2015 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
WOS关键词NW CHINA IMPLICATIONS ; SOUTHERN ALTAIDS ; CENTRAL-ASIA ; CONTINENTAL-CRUST ; INNER-MONGOLIA ; TECTONIC EVOLUTION ; WESTERN-PACIFIC ; BELT ; SUBDUCTION ; GROWTH
WOS研究方向Geology
语种英语
WOS记录号WOS:000370306200015
资助机构National Natural Science Foundation of China(41390441 ; National Natural Science Foundation of China(41390441 ; National Natural Science Foundation of China(41390441 ; National Natural Science Foundation of China(41390441 ; 41230207 ; 41230207 ; 41230207 ; 41230207 ; 41202150 ; 41202150 ; 41202150 ; 41202150 ; 41472192 ; 41472192 ; 41472192 ; 41472192 ; 41190075) ; 41190075) ; 41190075) ; 41190075) ; National Natural Science Foundation of China(41390441 ; National Natural Science Foundation of China(41390441 ; National Natural Science Foundation of China(41390441 ; National Natural Science Foundation of China(41390441 ; 41230207 ; 41230207 ; 41230207 ; 41230207 ; 41202150 ; 41202150 ; 41202150 ; 41202150 ; 41472192 ; 41472192 ; 41472192 ; 41472192 ; 41190075) ; 41190075) ; 41190075) ; 41190075)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62023]  
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 Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi 830011, Peoples R China
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
4.Univ Leicester, Dept Geol, Leicester LE1 7RH, Leics, England
5.Beijing Inst Geol Mineral Resources, Beijing 100012, Peoples R China
6.Tianjin Inst Geol & Mineral Resources, Tianjin 300170, Peoples R China
推荐引用方式
GB/T 7714		 Ao, Songjian,Xiao, Wenjiao,Windley, Brian F.,et al. Paleozoic accretionary orogenesis in the eastern Beishan orogen: Constraints from zircon U-Pb and Ar-40/Ar-39 geochronology[J]. GONDWANA RESEARCH,2016,30:224-235.
APA Ao, Songjian.,Xiao, Wenjiao.,Windley, Brian F..,Mao, Qigui.,Han, Chunming.,...&Geng, Jianzhen.(2016).Paleozoic accretionary orogenesis in the eastern Beishan orogen: Constraints from zircon U-Pb and Ar-40/Ar-39 geochronology.GONDWANA RESEARCH,30,224-235.
MLA Ao, Songjian,et al."Paleozoic accretionary orogenesis in the eastern Beishan orogen: Constraints from zircon U-Pb and Ar-40/Ar-39 geochronology".GONDWANA RESEARCH 30(2016):224-235.

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来源：地质与地球物理研究所

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