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	Late Permian to Triassic intraplate orogeny of the southern Tianshan and adjacent regions, NW China
	Wei Ju ; Hou Guiting
刊名	Geoscience Frontiers
	2014
关键词	Central Asian Orogenic Belt Northern Xinjiang South Tianshan Ocean Tectonics Tarim-North Asia collision
英文摘要	The South Tianshan Orogen and adjacent regions of Central Asia are located in the southwestern part of the Central Asian Orogenic Belt.The formation of South Tianshan Orogen was a diachronous,scissors-like process,which took place during the Palaeozoic,and its western segment was accepted as a site of the fnal collision between the Tarim Craton and the North Asian continent,which occurred in the late Palaeozoic.However,the post-collisional tectonic evolution of the South Tianshan Orogen and adjacent regions remains debatable.Based on previous studies and recent geochronogical data,we suggest that the fnal collision between the Tarim Craton and the North Asian continent occurred during the late Carboniferous.Therefore,the Permian was a period of intracontinental environment in the southern Tianshan and adjacent regions.We propose that an earlier,small-scale intraplate orogenic stage occurred in late Permian to Triassic time,which was the frst intraplate process in the South Tianshan Orogen and adjacent regions.The later largescale and well-known Neogene to Quaternary intraplate orogeny was induced by the collision between the India subcontinent and the Eurasian plate.The paper presents a new evolutionary model for the South Tianshan Orogen and adjacent regions,which includes seven stages:(I)late Ordovicianeearly Silurian opening of the South Tianshan Ocean;(II)middle Silurianemiddle Devonian subduction of the South Tianshan Ocean beneath an active margin of the North Asian continent;(III)late Devonianelate Carboniferous closure of the South Tianshan Ocean and collision between the Kazakhstan-Yili and Tarim continental blocks;(IV)early Permian post-collisional magmatism and rifting;(V)late PermianeTriassic the frst intraplate orogeny;(VI)JurassicePalaeogene tectonic stagnation and(VII)NeoceneeQuaternary intraplate orogeny.; supported by the National Natural Science Foundation of China,China National Project No. 973,IGCP Project #592 “Continental construction in Central Asia” supported by UNESCO-IUGS; 中国科学引文数据库(CSCD); 1; 83-93; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416681]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Wei Ju,Hou Guiting. Late Permian to Triassic intraplate orogeny of the southern Tianshan and adjacent regions, NW China[J]. Geoscience Frontiers,2014.
APA	Wei Ju,&Hou Guiting.(2014).Late Permian to Triassic intraplate orogeny of the southern Tianshan and adjacent regions, NW China.Geoscience Frontiers.
MLA	Wei Ju,et al."Late Permian to Triassic intraplate orogeny of the southern Tianshan and adjacent regions, NW China".Geoscience Frontiers (2014).

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