Abstract:The Weijiagou rock group, originally a suite of carbonate rocks, clastic rocks and volcanic rocks, was formed during the continental rift-active continental margin stage, with metamorphism and deformation occurred in 1036 Ma. Based on the the tectonic environment discrimination of magmatic rocks, the Mesoproterozoic magmatism of the studied area lasted throughout the pre-, syn-and post-collision periods. Accompanying with the evolution of orogenic belt, this region suffered three times of ductile deformation, which separately formed in the stages of continental rift, active continental margin and collision-orogeny. Research has determined the existence of the Mesoproterozoic orogenic belt in the studied area, which experienced the process of continental rift, passive continental margin, active continental margin and collision-orogeny. It is also confirmed that the Grenville orogeny took place in the northern margin of North China plate and responded to the convergence of Rodinia super continent in late Mesoproterozoic.
刘锦, 李东涛, 蒯兵, 李玉超, 彭游博, 赵辰, 杨仲杰, 刘文彬. 华北板块北缘东段中元古代造山带地质特征及构造演化[J]. 地质与资源, 2013, 22(6): 435-443.
LIU Jin, LI Dong-tao, KUAI Bing, LI Yu-chao, PENG You-bo, ZHAO Chen, YANG Zhong-jie, LIU Wen-bin. MESOPROTEROZOIC OROGENIC BELT IN THE EAST PART OF THE NORTHERN MARGIN OF NORTH CHINA PLATE: Geologic Characteristics and Tectonic Evolution. GEOLOGY AND RESOURCES, 2013, 22(6): 435-443.