Structural pattern of the Wutai Complex and its constraints on the   tectonic framework of the Trans-North China Orogen

doi:10.1016/j.precamres.2011.08.009

CORC > 北京大学 > 地球与空间科学学院

	Structural pattern of the Wutai Complex and its constraints on the tectonic framework of the Trans-North China Orogen
	Zhang, Jian ; Zhao, Guochun ; Li, Sanzhong ; Sun, Min ; Chan, Lung S. ; Shen, Wenlue ; Liu, Shuwen
刊名	precambrian research
	2012
关键词	Archean Paleoproterozoic Trans-North China Orogen Wutai Deformation Tectonic evolution SHRIMP U-PB HIGH-PRESSURE GRANULITES LIAO-JI BELT ULTRAHIGH-TEMPERATURE METAMORPHISM LOWER CRUSTAL SECTION ZIRCON GEOCHRONOLOGY DETRITAL ZIRCONS FUPING COMPLEX EASTERN BLOCK PALEOPROTEROZOIC EVOLUTION
DOI	10.1016/j.precamres.2011.08.009
英文摘要	Wutai Complex is a key to test controversial models for the tectonic evolution of the Trans-North China Orogen (TNCO), along which the Eastern and Western Blocks amalgamated to form the North China Craton. Three stages of deformation (D-1 to D-3) were identified in the Wutai Complex. D-1 is characterized by NE-SW-trending foliations Si and NW-SE-orientated lineations L-1, indicating an initial NW-SE-directed compression. Associated with D-1 was prograde metamorphism (M-1). D-2 progressively overprinted D-1 and generated 'Z'-shaped folds and NEE-SWW-trending ductile shear zones. D-2 resulted in a fan-shaped structural pattern of the complex with top-to-the-NW thrusting in the northwestern part and opposite top-to-the-SE thrusting in the southeastern part. During D-2, the crust was doubled through thickening, leading to peak metamorphism (M-2). D-3 developed during post-collision exhumation and deformed the early fabrics to be open folds, resulting in near-isothermal decompression (M-3) and late cooling metamorphism (M-4). The overall structure of the Wutai Complex is characterized by a fan-shaped pattern with structural divergence. Structural features of the Wutai Complex, combined with those of the adjacent Hengshan and Fuping Complexes, indicate that the TNCO is characterized by a fan-shaped orogenic wedge with opposite senses of thrust. This orogenic wedge could have resulted from an eastward subduction and collision between the Western and Eastern Blocks to finally form the TNCO at similar to 1.85 Ga. (c) 2011 Elsevier B.V. All rights reserved.; Geosciences, Multidisciplinary; SCI(E); 43; ARTICLE; ,SI; 212-229; 222
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/228727]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhang, Jian,Zhao, Guochun,Li, Sanzhong,et al. Structural pattern of the Wutai Complex and its constraints on the tectonic framework of the Trans-North China Orogen[J]. precambrian research,2012.
APA	Zhang, Jian.,Zhao, Guochun.,Li, Sanzhong.,Sun, Min.,Chan, Lung S..,...&Liu, Shuwen.(2012).Structural pattern of the Wutai Complex and its constraints on the tectonic framework of the Trans-North China Orogen.precambrian research.
MLA	Zhang, Jian,et al."Structural pattern of the Wutai Complex and its constraints on the tectonic framework of the Trans-North China Orogen".precambrian research (2012).