【摘要】 据1∶5万区域地质调查和专题研究资料,就郯庐断裂带是否南延与消失的原因,其与大别-苏鲁造山带交截形成的假位错效应,以及与中新生代沉积盆地形成演化的关系等作了新的阐述。在此基础上,讨论了郯庐断裂带是否为巨大的左行平移断层或转换断层。认为郯庐断裂带可能是在“古郯庐带“的基础上于早侏罗世重新活动、白垩纪强烈活动的地堑型枢纽断裂带。更多还原

【Abstract】 Based on the1∶50000geological mapping and special-subject research data,the paper makes a new elucidation of the cause for the southward extension and disappearance of the Tanlu fault zone and the effect of the false dislocation produced by its intersection with the Dabie-Sulu orogenic belt,as well as its relations to the formation and evolution of Meso-Cenozoic sedimentary basins.On that basis,the paper discusses whether the Tanlu fault is a gigantic sinistral strike-slip fault or a transform fault.It is thought that the Tanlu fault might be a graben-type hinge fault zone which formed on the“Paleo-Tanlu belt”,was reactivated in the Early Jurassic and was very active during the Cretaceous.更多还原