PALEOZOIC MULTIPLE SUBDUCTION-ACCRETION PROCESSES OF THE SOUTHERN ALTAIDS

doi:10.2475/03.2009.02

	PALEOZOIC MULTIPLE SUBDUCTION-ACCRETION PROCESSES OF THE SOUTHERN ALTAIDS
	Xiao, W. J.1; Windley, B. F.2; Yuan, C.3; Sun, M.4; Han, C. M.1; Lin, S. F.5; Chen, H. L.6; Yan, Q. R.7; Liu, D. Y.7; Qin, K. Z.1
刊名	AMERICAN JOURNAL OF SCIENCE
	2009-03-01
卷号	309 期号:3 页码:221-270
ISSN号	0002-9599
DOI	10.2475/03.2009.02
文献子类	Review
英文摘要	The formation and development of the southern Altaids is controversial with regard to its accretionary orogenesis and continental growth. The Altay-East Junggar orogenic collage of North Xinjiang, China, offers a special natural laboratory to resolve this puzzle. Three tectonic units were juxtaposed, roughly from North to South, in the study area. The northern part (Chinese Altay), composed of variably deformed and metamorphosed Paleozoic sedimentary, volcanic, and granitic rocks, is interpreted as a Japan-type island arc of Paleozoic to Carboniferous-Permian age. The central part (Erqis), which consists of ophiolitic melanges and coherent assemblages, is a Paleozoic accretionary complex. The southern part (East Junggar), characterized by imbricated ophiolitic melanges, Nb-enriched basalts, adakitic rocks and volcanic rocks, is regarded as a Devonian-Carboniferous infra-oceanic island arc with some Paleozoic ophiolites, superimposed by Permian arc volcanism. A plagiogranite from an imbricated ophiolitic melange (Armantai) in the East Junggar yields a new SHRIMP zircon age of 503 +/- 7 Ma. Using published age constraints, we propose the presence of multiple subduction systems in this part of the Paloasian Ocean in the Paleozoic. The intraoceanic arcs became accreted to the southern active margin of the Siberian craton in the middle Carboniferous-Permian. During the long accretionary processes, in addition to large-scale southward-directed thrusting, large-scale, orogen-parallel, strike-slip movements (for example, Erqis fault) in the Permian translated fragments of these intraoceanic arcs and associated accretionary wedges. This new tectonic model has broad implications for the architecture and crustal growth of Central Asia and for other ancient orogens.
WOS关键词	ASIAN OROGENIC BELT ; PHANEROZOIC CRUSTAL GROWTH ; ZIRCON U-PB ; BAYANKHONGOR OPHIOLITE ZONE ; RIDGE-TRENCH ENCOUNTER ; NB-ENRICHED BASALTS ; IZU-BONIN-MARIANA ; NORTH TIEN-SHAN ; TECTONIC EVOLUTION ; CONTINENTAL GROWTH
WOS研究方向	Geology
语种	英语
出版者	AMER JOURNAL SCIENCE
WOS记录号	WOS:000264541700002
资助机构	Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; 40523003) ; 40523003) ; 40523003) ; 40523003) ; Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; 40523003) ; 40523003) ; 40523003) ; 40523003) ; Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; 40523003) ; 40523003) ; 40523003) ; 40523003) ; Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Chinese State 973 Program(2007CB41.1307) ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; Natural Science Foundation Of China(40725009 ; 40523003) ; 40523003) ; 40523003) ; 40523003)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/71174]
专题	中国科学院地质与地球物理研究所
通讯作者	Xiao, W. J.
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 Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 4.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 5.Univ Waterloo, Dept Earth Sci, Waterloo, ON N2L 3G1, Canada 6.Zhejiang Univ, Dept Earth Sci, Hangzhou 310027, Peoples R China 7.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
推荐引用方式 GB/T 7714	Xiao, W. J.,Windley, B. F.,Yuan, C.,et al. PALEOZOIC MULTIPLE SUBDUCTION-ACCRETION PROCESSES OF THE SOUTHERN ALTAIDS[J]. AMERICAN JOURNAL OF SCIENCE,2009,309(3):221-270.
APA	Xiao, W. J..,Windley, B. F..,Yuan, C..,Sun, M..,Han, C. M..,...&Sun, S..(2009).PALEOZOIC MULTIPLE SUBDUCTION-ACCRETION PROCESSES OF THE SOUTHERN ALTAIDS.AMERICAN JOURNAL OF SCIENCE,309(3),221-270.
MLA	Xiao, W. J.,et al."PALEOZOIC MULTIPLE SUBDUCTION-ACCRETION PROCESSES OF THE SOUTHERN ALTAIDS".AMERICAN JOURNAL OF SCIENCE 309.3(2009):221-270.