郯庐断裂带(安徽部分)动力学演化及其构造意义  

Dynamic evolution and tectonic significance of the Tanlu fault zone(Anhui segment)

作　　者：侯明金[1] 王永敏[1] Jacques MERCIER Pierre VERGELY 

机构地区：[1]安徽省地质调查院,安徽合肥230001 [2]Geophysique et Geodynamique Laboratore

出　　处：《地质通报》2003年第2期105-112,共8页Geological Bulletin of China

基　　金：原地矿部及安徽地矿局资助项目。

摘　　要：依据区域构造层划分,从最新地层内的断裂动力学分析开始,层层深入,层层筛选,采用计算机程序对所获的断层面上的擦痕统计分析计算,求得每个点上的古应力场状态,继而求得区域古构造应力场状态。确定发生于各个不同时代断裂活动的古应力场特征。最后确定一个连续的、完整的古应力场演化序列表,结合区域构造变形特征分析,阐明断裂带的构造事件演化序列及其构造意义。According to the regional tectonic layer division and proceeding from a dynamic analysis of faults in the youngest strata,analysis was performed layer by layer along the Tanlu fault zone.Through sta-tistical analysis and calculation of striations on fault planes by means of the computer program,the pale-ostress state at every point is obtained,and then the state of the regional paleostress field is obtained.After that,the characters of paleostress fields in which fault movements occur in different periods of time can be determined.Finally a complete and successive evolutionary sequence of the paleostress field can be deter-mined.On that basis,combined with an analysis of the features of regional tectonic deformation the se-quence of tectonic events occurring in the fault zone and its significance can be elucidated.

关 键 词：郯庐断裂带安徽段 断层擦痕 古应力场分析 构造演化序列 

分 类 号：P542.4[天文地球—构造地质学]