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Characteristics of Plate Tectonics and Division of Geotectonic Units in Liaoning Region
详细信息   
摘要

///Based on the theory of plate tectonics and the results of the 1∶50 000 regional geological surveys in recent years and related achievements, the crustal evolution and development of Liaoning region are analyzed. It is suggested that the crustal development in the region should be divided into Early Precambrian continental accretion tectonic system and Mesoproterozoic plate tectonic system. On this basis, the tectonic units of Liaoning region are divided. The Grade I unit is Tarim-North China plate. Grade II involves Tianshan-Chifeng continental margin active belt and North China landmass. The Grade III units include Jianping-Xifeng Variscan continental margin orogeny, Hebei-Liaoning massif, Tieling-Qingyuan micro-massif, Liaoning-Jilin massif and Lower Liaohe-Liaodong Bay Cenozoic rift. There are 16 tectonic units of Grade Invite characteristics of the 5 units of Grade III are described in this paper to clarify the crustal evolution in the region. 

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