安徽西南宿松-枞阳断裂中段活动性的综合评价

A SYNTHETIC ASSESSMENT ON ACTIVITY ALONG THE MIDDLE SEGMENT OF SUSONG ZONGYANG FAULT, SOUTHWEST AREA OF ANHUI PROVICE

安徽西南的宿松－枞阳断裂有历史记载以来曾发生多次中、小地震。综合近年来在该地区进行的一些重大工程场地地震安全性评价工作积累的资料，利用宏观、微观构造相结合的分析方法，配合断层物质测年等手段，对该断裂中段进行了较系统的研究，说明了近代中、小地震沿断裂发生的地质背景，并对断裂未来地震活动水平进行了初步预测，为弱震地区断裂活动习性综合评价提供了一个实例。

Since having historical records, there have been many times middle or small earthquakes occurred along the Susong Zongyang fault, southwest area of Anhui province. This paper gives a synthetic study on the fault by means of macro microscopic structural analysis, dating of the deformational materials, and combing with a series of seismic safety evaluation of the enginnering sites in this area. Based on the aforementined work, the authors revealed the geological background of middle or small earthquakes along the fault, and forecased initially the level of seismic acitvity nearby the fault in future. It offers an example to evaluating fault′s active behaviour in the areas of lower seismicity.