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《Acta Scicentiarum Naturalum Universitis Pekinesis》 2001-06
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The Tectonic Evolution of Bohai Basin in Mesozoic and Cenozoic Time

HOU Guiting 1) QIAN Xianglin 1) CAI Dongsheng 2) ( 1)Department of Geology,Peking University,Beijing,100871; 2)Institute of Geology,Bohai Petroleum Company,Tianjin,300452)  
Based on the analysis of distribution of upper Jurassic and lower Cretaceous strata and basin-controlled faults,Tanlu fault zone strike slip to develop the three NW-trending grabens from north to south western to Tanlu fault zone in late Jurassic and early Cretaceous,which are Bohai graben,Jiyang graben and Luxinan graben.Based on the analysis of regional geology,the basic tectonic pattern of Bohai basin is the Cenozoic basin pattern since early Paleogene.The outline,structure,deposit characteristics and heat flow distributions show that the basin is pull-apart basin in Cenozoic time.The tectonic evolution pattern can be reconstructed based on the analysis of Cenozoic strata,deposit thickness,location and activity of basin-controlled faults in the different depresses in Bohai basin.The characteristics of structure and depositment in this Mesozoic and Cenozoic time show that Bohai basin is a Mesozoic and Cenozoic composite basin.
【Fund】: 国家九五科技攻关项目;; 国家自然科学基金 ( 4 0 172 0 66)资助项目
【CateGory Index】: P544.4
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