Abstract: Based on the analysis of the macrostructural and microstructural features of the Jiangyin-Tiading fault zone in Southern Jiangsu Province, the surface textures of the quartz grains from the fault zone was studied by means of scanning electron microscope (SEM). For comparison, the same work has been done for the middle segment of Tancheng-Lujiang fault zone. By comparison and analysis of the results, the ralative age and activity of the Jiangyin-Jiading fault zone have been determined. In addition, the model of earthquake migration along the fault zone, the probability distribution for the surface texture of quartz grains from the fault zone and its seismo-geological implication have been discussed in this paper as well.

Key words: Jiangsu Province, Active -fault, Surface texture of quartz grains, Seis-micity

摘要： 本文在分析苏南江阴-嘉定北西向断裂带宏观构造特征的基础上,对断层泥中石英碎砾表面溶蚀结构进行了扫描电子显微镜研究,并与郯-庐断裂带山东段断层泥进行了电镜图象的对比分析,从而确定了江阴-嘉定断裂带的相对(最新)活动年代及其地震活动性;此外,就江阴-嘉定断裂带不同区段活动年代差异及其纵向迁移模式、断层泥石英碎砾表面结构电镜图象聚类的概率分布特征及其地震地质意义等有关问题展开了讨论。

关键词: 江苏, 活动断裂, 断层泥石英碎砾表面结构, 地震