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| 华北地块北缘中新元古界沉积构造演化 | |
| 引用本文： | 潘建国,曲永强,马瑞,潘中奎,王海龙.华北地块北缘中新元古界沉积构造演化[J].高校地质学报,2013,19(1):109-122. |
| 作者姓名： | 潘建国 曲永强 马瑞 潘中奎 王海龙 |
| 作者单位： | 中国石油勘探开发研究院西北分院;中国石油大港油田分公司第三采油厂;甘肃省地矿局第三地质矿产勘查院 |
| 基金项目： | 中国科学院知识创新工程重要方向项目(编号:KZCX2-YW-Q04-04) |
| 摘 要： | 根据文献资料及对研究区8 条实测剖面资料的综合分析结果表明，Columbia 超级大陆的裂解导致华北陆块北缘大陆裂 |
| 关 键 词： | 华北地块北缘 中新元古代 构造演化 大陆边缘 超大陆 |
Sedimentary and Tectonic Evolution of the Meso-Neoproterozoic Strata in the Northern Margin of the North China Block |
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| PAN Jianguo,QU Yongqiang,MA Rui,PAN Zhongkui,WANG Hailong.Sedimentary and Tectonic Evolution of the Meso-Neoproterozoic Strata in the Northern Margin of the North China Block[J].Geological Journal of China Universities,2013,19(1):109-122. | |
| Authors: | PAN Jianguo QU Yongqiang MA Rui PAN Zhongkui WANG Hailong |
| Institution: | 1.Northwest Branch,Research Institute of Petroleum Exploration and Development,PetroChina,Lanzhou 730020,China;2.TheThird Extraction of Dagang Oilfield,PetroChina,Changxian 061723,China;3.Institute Geological and Mineral Exploration of Gansu Provincial Bureau of Geology and Mineral Resources,Lanzhou 730020,China |
| Abstract: | The formation of continental rift basin in the northern margin of the North China block is caused by the breakup of the Columbia supercontinent according to previous study and analysis of our eight measured sections. Due to the continued crustal extension and creation of oceanic crust, the northern North China block involved into a passive continental margin, which then turned into an active margin around 1400 Ma after the deposition of the Tieling Formation. The low-angle subduction of the oceanic crust beneath the North China block resulted in a compression environment in the back-arc area (Qinyu Uplift), thus leading to the uplift and erosion of the Tieling Formation. Presumably, high-angle subduction of the oceanic crust followed, and caused intense rifting and deposition of the Xiamaling Formation accompanied by the intrusion of diabase dykes. The uplift of the Xiamaling Formation (or Yuxian Uplift) was related to the collision between the North China block and the adjacent block, accompanied by occurrence of the collision-related granites. The time of contractional event coincided with the formation age of the Rodinia supercontinent. Neoproterozoic successions might be related to the breakup of the Rodinia supercontinent. Quartzarenites and glauconitic sandstones of the Longshan Formation is the earliest deposition after the breakup of the Rodinia supercontinent, recording the early transgressive processes. |
| Keywords: | northern margin of North China block Meso-Neoproterozoic tectonic evolution continental margin supercontinent |
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