Early Paleozoic to Devonian multiple-accretionary model for the Qilian Shan, NW China

doi:10.1016/j.jseaes.2008.10.001

	Early Paleozoic to Devonian multiple-accretionary model for the Qilian Shan, NW China
	Xiao, Wenjiao 1; Windley, Brian F.2; Yong, Yong 1; Yan, Zhen 3; Yuan, Chao 4; Liu, Chuanzhou 1; Li, Jiliang 1
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2009-07-01
卷号	35 期号:3-4 页码:323-333
关键词	Qilian Subduction-accretion Tectonic architecture Northern Tibetan Plateau
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2008.10.001
文献子类	Article
英文摘要	The Qilian Shan, located in the northern Tibetan Plateau of NW China, has an excellent record of early to middle Paleozoic subduction-accretion that resulted from convergence between the Alax and Qaidam blocks, but there is no consensus about its detailed tectonic history. This paper summarizes its tectonic divisions and discusses its tectonic evolution from the Cambrian to Devonian. The belt has the following tectonic divisions: In the far north the southern passive margin of the Alax block is juxtaposed against an early Cambrian to Ordovician, Marianan-type intra-oceanic arc (North Qilian). The North Qilian arc is separated from a Japanese-type arc (Central Qilian) to the south by a high-pressure metamorphic belt composed mostly of ophiolitic slices and oceanic crusts. The Central Qilian is bounded to the south by a wide melange zone (South Qilian), consisting of ophiolitic slices and continental margin sequences. Farther to the south lies the Oulongbuluk microcontinent that is separated from the Qaidam block and farther south by an ultrahigh-pressure metamorphic belt. Tectonostratigraphic analysis, together with geochemical, geochronological, and geophysical data, indicates a complex evolution by subduction-accretion processes from the Cambrian to the Devonian before final amalgamation and docking to the northern Alax block. This model solves the long-lasting discussion on the polarity of subduction in Paleozoic time; this multiple subduction-accretion history sheds light on the continuity of Paleozoic sutures along the Qilian Shan and the nature of the Altyn Tagh fault, and thus contributes to an improved understanding of the tectonic architecture of Central Asia. (C) 2008 Elsevier Ltd. All rights reserved.
WOS关键词	ALTYN-TAGH FAULT ; NORTHEASTERN TIBETAN PLATEAU ; CENOZOIC TECTONIC EVOLUTION ; ARC-CONTINENT COLLISION ; UHP METAMORPHIC BELT ; WESTERN KUNLUN RANGE ; NORTH QAIDAM ; CENTRAL-ASIA ; OROGENIC BELT ; PALINSPASTIC RECONSTRUCTION
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000266895800010
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/71798]
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.Univ Leicester, Dept Geol, Leicester LE1 7RH, Leics, England 3.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Wenjiao,Windley, Brian F.,Yong, Yong,et al. Early Paleozoic to Devonian multiple-accretionary model for the Qilian Shan, NW China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2009,35(3-4):323-333.
APA	Xiao, Wenjiao.,Windley, Brian F..,Yong, Yong.,Yan, Zhen.,Yuan, Chao.,...&Li, Jiliang.(2009).Early Paleozoic to Devonian multiple-accretionary model for the Qilian Shan, NW China.JOURNAL OF ASIAN EARTH SCIENCES,35(3-4),323-333.
MLA	Xiao, Wenjiao,et al."Early Paleozoic to Devonian multiple-accretionary model for the Qilian Shan, NW China".JOURNAL OF ASIAN EARTH SCIENCES 35.3-4(2009):323-333.