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

doi:10.1016/j.gr.2015.03.004

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Paleozoic accretionary orogenesis in the eastern Beishan orogen: Constraints from zircon U-Pb and Ar-40/Ar-39 geochronology
	Ao, Songjian 1; Xiao, Wenjiao 1,2,3; Windley, Brian F.4; Mao, Qigui 5; Han, Chunming 1; Zhang, Ji'en 1; Yang, Liekun 1; Geng, Jianzhen 6
刊名	GONDWANA RESEARCH
	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
DOI	10.1016/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)
内容类型	期刊论文
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.