【摘要】 在大量地震剖面综合解释的基础上 ,提出华北板块与北淮阳晚加里东 -早海西期褶皱带的界线应在六安断裂 ,肥中断裂是华北陆壳型基底与其过渡壳型基底的大致分界。首次发现合肥盆地侏罗系之下存在以青白口系刘老碑组泥质岩为主滑脱层的印支期形成的由南向北滑脱冲断、主要卷入华北地台及其被动陆缘上元古 -古生界的完整冲断体系 ,并认为侏罗纪盆地为再生前陆盆地 ,编制了前侏罗系基岩地质图 ,为研究华北、大别及扬子三大块体的相互关系提供了新资料更多还原

【Abstract】 Based on the comprehensive explanation of a large number of seismic sections, this paper suggests that the boundary between the Northern China Plate and the Beihuaiyang Folded Belt from Late Caledonian to Early Hercynian should be the Liuan Fault, and the Feizhong Fault is about the line dividing continental crust basement and transitional crust basement of the Northern China Plate. It is first discovered that Under Jurassic System in Hefei Basin, a comprehensive overthrust system which has been mainly involved with Neoproterozoic and Paleozoic strata of craton and passive continental margin of the Northern China Plate, and which formed in Indosinian Period (Middle to Late Triassic) overthrusting from south to north and sliding along the chief decollement layer of argillaceous rocks of Liulaobei Formation of Qingbaikou System. The basin in Jurassic is a rejuvenated foreland basin. A geologic map of Pre Jurassic of Hefei Basin was drawn. It provides some information for dealing with the relationship among the Northern China Plate, Dabie Massif and Southern China Plate.更多还原