聊城-兰考断裂中段第四纪活动研究

Study on Quaternary Activity at the Middle Part of Liaocheng-Lankao Fault

为研究聊城-兰考断裂中段的第四纪活动特征,采用浅层地震勘探和钻孔联合剖面相结合的探测方法,跨断裂布设5条浅层地震勘探测线和1条钻孔联合地质剖面。钻孔联合地质剖面揭示聊城-兰考断裂中段上断点埋深为61.4~64.5 m,结合地层年代学结果判定,聊城-兰考断裂中段为晚更新世早期活动断裂。

In order to study the Quaternary activity characteristics of the middle section of Liaocheng-Lankao fault,we use the shallow seismic exploration and borehole combined section to detect the fault.We arrange five shallow seismic exploration lines and one borehole combined geological section are arranged across the fault.The borehole combining geological section reveals that the buried depth of the breakpoint on the fault is 61.4-64.5 m.Combining with the chronological results,the latest age of the middle part of Liaocheng-Lankao fault is the early late Pleistocene.