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《中国科学D辑(英文版)》 1996-S1
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Late Paleozoic sedimentation and tectonics of rift and limited ocean basin at southern margin of the Qinling

MENG Qingren(Institute of Geophysics. Chinese Academy of Sciences. Beijing 100101, China)ZHANG Guowei , YU Zaiping and MEI Zhichao(Department of Geology, Northwest University, Xi'an 710069, China)  
The rifting and occurrence of limited oceanic basin at southern margin of Qinling separated south Qinling from Yangtze Block in late Paleozoic. Detailed sedimentary studies were carried out at two localities at southern flank of this rift-limited oceanic basin zone. and depositional architectures were then established accordingly. The results show that tectono-sedimentary stories are differing in different positions but clearly demonstrate spatial development of the rift. It is obvious that the rift in west part of Mianlue underwent two developmentary phases, early rapid subsidence and late slow subsidence, and there occurred breakup unconformity between the seccessions of the two subsidence phases. Combined with the data of structural, geochemical and chronological studies on the ophiolitic complex within the Mianlue zone. it is demonstrated that the rifting-drifting transition occurred, leading to the development of limited oceanic basin during the late Paleazoic. Spatial and temporal evolution of the rift-limited oceanic basin zone am be well correlated with Paleo-Tethyside, indicating their genetic linkage.
【Fund】: Project supported by the National Natural Science Foundation of China.
【CateGory Index】: P512.2
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【References】
Chinese Journal Full-text Database 1 Hits
1 QIN Jiangfeng~1 LAI Shaocong~(1,*) WANG Juan~1 LI Yongfei~2 1 State Key Laboratory of Continental Dynamics,Department of Geology,Northwest University,Xi'an 710069,Shaanxi,China 2 Shenyang Institute of Geology and Mineral Resources,Shenyang 110032,Liaoning,China;Zircon LA-ICP MS U-Pb Age,Sr-Nd-Pb Isotopic Compositions and Geochemistry of the Triassic Post-collisional Wulong Adakitic Granodiorite in the South Qinling,Central China,and Its Petrogenesis[J];地质学报(英文版);2008-02
【Co-references】
Chinese Journal Full-text Database 3 Hits
1 ZHANG Qi, WANG Yan, QIAN Qing, YANG JinHui, WANG YuanLong, ZHAO TaiPing and GUO GuangJunInstitute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China.;The characteristics and tectonic-metallogenic significances of the adakites in Yanshan period from eastern China.[J];Acta Petrologica Sinica;2001-02
2 ZHANG ChengLi, ZHANG GuoWei, YAN YunXiang and WANG Yu Key Laboratory of Continental Dynamics in Educational Ministry of China, Department of Geology, Northwest University, Xi'an 710069, China State Key Laboratory of Geological Progresses and Mineral Resources, China University of Geosciences, Wuhan 430074 , China Exploration mapping institute of Xianyang city in Shaanxi province, Xianyang 712000, China;Origin and dynamic significance of Guangtoushan granitic plutons to the north of Mianlue zone in southern Qinling.[J];Acta Petrologica Sinica;2005-03
3 ZHANG Guowei, CHENG Shunyou, GUO Anlin,DONG Yunpeng, LAI Shaocong, YAO Anping(Key Laboratory of Continental Dynamics, Ministry of Education/Department of Geology,Northwest University, Xi'an 710069, Shaanxi, China);Mianlue paleo-suture on the southern margin of the Central Orogenic System in Qinling-Dabie-with a discussion of the assembly of the main part of the continent of China[J];Regional Geology of China;2004-Z2
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