Paleoproterozoic tectonic evolution of the Trans-North China Orogen: Toward a comprehensive model

doi:10.1016/j.precamres.2011.09.008

	Paleoproterozoic tectonic evolution of the Trans-North China Orogen: Toward a comprehensive model
	Trap, Pierre 1; Faure, Michel 2; Lin, Wei 3; Le Breton, Nicole 2; Monie, Patrick 4
刊名	PRECAMBRIAN RESEARCH
	2012-12-01
卷号	222 页码:191-211
关键词	Trans-North China Orogen Paleoproterozoic Collision Pseudosection Ar-40/Ar-39 dating North China Craton
ISSN号	0301-9268
DOI	10.1016/j.precamres.2011.09.008
文献子类	Article
英文摘要	In this contribution we present a reconstruction of the overall lithotectonic architecture, from inner zones to external ones, of the Paleoproterozoic Trans-North China Orogen, within the North China Craton. Moreover, forward thermobarometrical modelling on a kyanite-bearing gneiss yields a reliable prograde P-T-t-D path. In addition, Ar-40/Ar-39 dating on rocks from distinct litho-tectonic units helps us to distinguish several tectono-metamorphic events during the orogenic development. Considering these results, we propose a geodynamic model involving three cratonic blocks, namely the Western, Fuping and Eastern Blocks, separated by two oceans, the Luliang and Taihang Oceans. The opening of oceanic basins occurred around 2.2-2.3 Ga. After the westward subductions of oceanic lithosphere, the Trans-North China Orogen was built up through a polyphase tectonic evolution within the period 1900-1800 Ma. The first event (D1) corresponded to the emplacement of lower and upper nappes herein called the Orthogneiss-and-Volcanite Unit (OVU) and the Low-Grade-and-Mafic Unit (LGMU), respectively. The syn-metamorphic D1 deformation (1880 +/- 10 Ma) is characterized by a NW-SE stretching and mineral lineation with a top-to-the SE sense of shear. During ongoing compression of the thickening orogenic crust, a second deformation event D2 (1850 +/- 10 Ma) was responsible for (1) syn-anatectic lateral flow and exhumation of the orogenic root and (2) folding of the middle and upper parts of the orogenic wedge that consequently acquired a fan-type geometry. The late D3 (1830 +/- 10 Ma) and D4 (1810 +/- 10 Ma) events are related to late-orogenic normal and strike-slip shearing, respectively. In our present state of knowledge, the Paleoproterozoic Trans-North China Orogen might be regarded as the assemblage of two continent-continent collisional belts, both of which are characterized by nappe stacking accommodated by top-to-the E/SE ductile shearing. Continental subduction, crustal thickening, partial melting of overthickened crust, exhumation of HP rocks and deposition of syn-orogenic detrital basins are typical features of modern collisional-type orogens. (c) 2011 Elsevier B.V. All rights reserved.
WOS关键词	PB ZIRCON GEOCHRONOLOGY ; ULTRAHIGH-TEMPERATURE METAMORPHISM ; HIGH-PRESSURE GRANULITES ; LIAO-JI BELT ; CONSISTENT THERMODYNAMIC DATA ; LOWER CRUSTAL SECTION ; WUTAI-FUPING BELT ; U-PB ; CENTRAL ZONE ; DEFORMATION HISTORY
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000313765700010
资助机构	National Science Foundation of China(40472116) ; National Science Foundation of China(40472116) ; National Science Foundation of China(40472116) ; National Science Foundation of China(40472116) ; National Science Foundation of China(40472116) ; National Science Foundation of China(40472116) ; National Science Foundation of China(40472116) ; National Science Foundation of China(40472116)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/84328]
专题	中国科学院地质与地球物理研究所
通讯作者	Trap, Pierre
作者单位	1.Univ Franche Comte, CNRS, UMR Chrono Environm 6249, F-25030 Besancon, France 2.Univ Orleans, CNRS, UMR 6113, Inst Sci Terre Orleans, F-45071 Orleans 2, France 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithosphere Evolut, Beijing 100029, Peoples R China 4.Univ Montpellier 2, CNRS, UMR 5243, F-34095 Montpellier 5, France
推荐引用方式 GB/T 7714	Trap, Pierre,Faure, Michel,Lin, Wei,et al. Paleoproterozoic tectonic evolution of the Trans-North China Orogen: Toward a comprehensive model[J]. PRECAMBRIAN RESEARCH,2012,222:191-211.
APA	Trap, Pierre,Faure, Michel,Lin, Wei,Le Breton, Nicole,&Monie, Patrick.(2012).Paleoproterozoic tectonic evolution of the Trans-North China Orogen: Toward a comprehensive model.PRECAMBRIAN RESEARCH,222,191-211.
MLA	Trap, Pierre,et al."Paleoproterozoic tectonic evolution of the Trans-North China Orogen: Toward a comprehensive model".PRECAMBRIAN RESEARCH 222(2012):191-211.