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Progressive accretionary tectonics of the Beishan orogenic collage, southern Altaids: Insights from zircon U-Pb and Hf isotopic data of high-grade complexes

文献类型：期刊论文

作者Song, Dongfang1,2; Xiao, Wenjiao1; Han, Chunming1; Li, Jiliang1; Qu, Junfeng1; Guo, Qianqian1,2; Lin, Lina1,2; Wang, Zhongmei1,2
刊名PRECAMBRIAN RESEARCH
出版日期2013-04-01
卷号227页码:368-388
关键词Beishan Complex U-Pb age Hf isotope Paleozoic Progressive accretion Southern Altaids
ISSN号0301-9268
DOI10.1016/j.precamres.2012.06.011
文献子类Article
英文摘要High-grade gneissic rocks of the southern Altaids in Central Asia bear one of the key elements needed to solve a basic architectural controversy in accretionary orogenesis. High-grade gneissic rocks widely crop out across the Beishan orogenic collage, southern Altaids, mapped as the Beishan Complex or Dunhuang Group, which was previously regarded as Neoarchean to Paleoproterozoic crystalline basement, but without systematic field, geochronological and geochemical data. This study provides field, geochemical and zircon U-Pb and Hf isotopic data for gneissic rocks from the Beishan Complex. Geochemical data show that the gneissic rocks were probably formed in a subduction environment. Most zircons from the Beishan Complex are magmatic origins because their Th/U ratios are mostly in the range of 1.0-0.1; they show age peaks at 494 Ma, 464 Ma, and 375 Ma, with a few Precambrian ages. Zircon Hf isotopic compositions indicate that both old and juvenile materials were involved in the formation of the Beishan Complex, which is different from the basement rocks of the Tarim Craton both in radiometric age and Hf isotopic composition. All these data thus do not support a uniform Precambrian basement in the Beishan area as previously proposed, but instead the Beishan Complex probably formed in a subduction-accretion environment. Combined with regional geology and geochemical data, we conclude that the Beishan orogenic collage was characterized by progressive long-lived accretionary tectonics during Late Precambrian to Paleozoic time, therefore shedding light on the controversy regarding the architecture of accretionary orogens. (C) 2012 Elsevier B.V. All rights reserved.
WOS关键词NW CHINA IMPLICATIONS ; ASIAN MOBILE BELT ; CONTINENTAL-CRUST ; PALEOZOIC EVOLUTION ; INNER-MONGOLIA ; GROWTH ; GEOCHRONOLOGY ; SIBERIA ; GEOCHEMISTRY ; ROCKS
WOS研究方向Geology
语种英语
WOS记录号WOS:000316771800019
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; 41190072) ; 41190072) ; 41190072) ; 41190072) ; 2007BAB25B04) ; 2007BAB25B04) ; 2007BAB25B04) ; 2007BAB25B04) ; National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; 41190072) ; 41190072) ; 41190072) ; 41190072) ; 2007BAB25B04) ; 2007BAB25B04) ; 2007BAB25B04) ; 2007BAB25B04) ; National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; 41190072) ; 41190072) ; 41190072) ; 41190072) ; 2007BAB25B04) ; 2007BAB25B04) ; 2007BAB25B04) ; 2007BAB25B04) ; National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; National Natural Science Foundation of China(40725009 ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; Chinese National Basic Research 973 Program(2007CB411307) ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; National 305 Projects(2011BAB06B04 ; 41190072) ; 41190072) ; 41190072) ; 41190072) ; 2007BAB25B04) ; 2007BAB25B04) ; 2007BAB25B04) ; 2007BAB25B04)
源URL[http://ir.iggcas.ac.cn/handle/132A11/87201]  
专题中国科学院地质与地球物理研究所
通讯作者Xiao, Wenjiao
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, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Song, Dongfang,Xiao, Wenjiao,Han, Chunming,et al. Progressive accretionary tectonics of the Beishan orogenic collage, southern Altaids: Insights from zircon U-Pb and Hf isotopic data of high-grade complexes[J]. PRECAMBRIAN RESEARCH,2013,227:368-388.
APA Song, Dongfang.,Xiao, Wenjiao.,Han, Chunming.,Li, Jiliang.,Qu, Junfeng.,...&Wang, Zhongmei.(2013).Progressive accretionary tectonics of the Beishan orogenic collage, southern Altaids: Insights from zircon U-Pb and Hf isotopic data of high-grade complexes.PRECAMBRIAN RESEARCH,227,368-388.
MLA Song, Dongfang,et al."Progressive accretionary tectonics of the Beishan orogenic collage, southern Altaids: Insights from zircon U-Pb and Hf isotopic data of high-grade complexes".PRECAMBRIAN RESEARCH 227(2013):368-388.

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来源：地质与地球物理研究所

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