摘要
在野外考察和测量以及断层活动年代样品的采集和测定的基础上 ,通过室内的综合分析研究 ,查明了黄山 米山断裂的空间分布 ,鉴定了断裂的活动时代和运动性质 ,评价了断裂对米山水库稳定性的影响。研究结果表明 ,黄山 米山断裂呈南北向展布 ,分北、中、南三段 ;以挤压逆冲运动为主 ,兼有左旋走滑运动。黄山 米山断裂带物质固化胶结程度较高 ,地形地貌上无断层显示 ,没有断错Q2 以来的地层 (本区缺失Q1地层 ) ,对历史地震和现代地震不具控制作用 ,系非第四纪活动断裂 ;
On the basis of field surveying and faults activity data,the Huangshan Mishan fault is determined to extend in the direction of North South,it can be divided into 3 sections;the movement features of the fault is extrusively,rush controdictorily with little walk of left revolve.The matter in the fault belt is hardly solidified.There are no showings in landforms.The fault does not break the system of Holocene steries(there is no upper Pleistocene steries in the working region.),and it has never controlled the earthquakes of contemporary age even anivent times.The fault is determined inactive in Quaternary,it bas little impact on the stability of the Mishan reservoir and dam.
出处
《东北地震研究》
2001年第1期35-42,共8页
Seismological Research of Northeast China
