Polyphase deformation of the Fuping Complex, Trans-North China Orogen:   Structures, SHRIMP U-Pb zircon ages and tectonic implications

doi:10.1016/j.jsg.2008.11.008

CORC > 北京大学 > 地球与空间科学学院

	Polyphase deformation of the Fuping Complex, Trans-North China Orogen: Structures, SHRIMP U-Pb zircon ages and tectonic implications
	Zhang, Jian ; Zhao, Guochun ; Li, Sanzhong ; Sun, Min ; Wilde, Simon A. ; Liu, Shuwen ; Yin, Changqing
刊名	journal of structural geology
	2009
关键词	North China Craton Archean Paleoproterozoic Fuping Deformation SHRIMP U-Pb zircon age HIGH-PRESSURE GRANULITES LIAO-JI BELT ULTRAHIGH-TEMPERATURE METAMORPHISM LOWER CRUSTAL SECTION CENTRAL ZONE HENGSHAN COMPLEX DETRITAL ZIRCONS BASEMENT ROCKS EASTERN BLOCK GEOCHRONOLOGICAL CONSTRAINTS
DOI	10.1016/j.jsg.2008.11.008
英文摘要	The Fuping Complex is located in the central part of the Trans-North China Orogen (TNCO), a Paleoproterozoic collisional belt along which the Eastern and Western Blocks were assembled to form the North China Craton. Three stages of deformation (D(1)-D(3)) have been identified in the Fuping Complex. D(1) formed tight to isoclinal folds F(1), penetrative foliation S(1) and mineral lineation L(1), which resulted from the early NW-SE-orientated thrusting and shearing. D(2) progressively overprinted D(1) and was dominated by by mostly NW-SE shortening and top-to-the-SE(E) thrusting under a compressive environment. D(1) and D(2) occurred in association with the peak metamorphism (M(1)). D(3) occurred during the exhumation after the crustal thickening, producing regional-scale NWW-SEE-trending open folds (F(3)) and associated low-angle detachment faults, and was responsible for the isothermal decompression (M(2)) metamorphism of the complex. Following the D(3) deformation, the complex was exhumed to shallow crustal levels where the rocks underwent the retrogressive cooling (M(3)) metamorphism. Syn-tectonic leucocratic dykes are widespread in the Fuping Complex, Two leucocratic dykes that did not experience D(1) but underwent D(2) yield SHRIMP zircon ages of 1843 +/- 12 Ma and 1844 +/- 18 Ma, which indicate that D(1) must have occurred at some time earlier than similar to 1844 Ma, whereas D(2) must have occurred at some time later than this age. Two weakly deformed post-D(2) leucocratic dykes yield SHRIMP zircon ages of 1817 +/- 14 Ma and 1815 +/- 45 Ma, suggesting that the D(2) deformation occurred in the period 1843-1815 Ma. The new SHRIMP data indicate that the collision-related deformation of the Fuping Complex must have occurred in the Paleoproterozoic, not in the late Archean. Structural and geochronological data presented in this study, in association with previous lithological and geochemical data, suggest that the Fuping Complex may have been located in the hinterland of an eastward subduction zone and underwent intensive deformation and metamorphism involved in the final collision between the Western and Eastern Blocks at similar to 1.85 Ga. (C) 2008 Elsevier Ltd. All rights reserved.; Geosciences, Multidisciplinary; SCI(E); EI; 111; ARTICLE; 2; 177-193; 31
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/246559]
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. Polyphase deformation of the Fuping Complex, Trans-North China Orogen: Structures, SHRIMP U-Pb zircon ages and tectonic implications[J]. journal of structural geology,2009.
APA	Zhang, Jian.,Zhao, Guochun.,Li, Sanzhong.,Sun, Min.,Wilde, Simon A..,...&Yin, Changqing.(2009).Polyphase deformation of the Fuping Complex, Trans-North China Orogen: Structures, SHRIMP U-Pb zircon ages and tectonic implications.journal of structural geology.
MLA	Zhang, Jian,et al."Polyphase deformation of the Fuping Complex, Trans-North China Orogen: Structures, SHRIMP U-Pb zircon ages and tectonic implications".journal of structural geology (2009).