鲜水河—小江断裂带7级以上强震构造区的划分及其构造地貌特征  

SEISMO TECTONIC DIVISIONS OF STRONG EARTHQUAKES ( M_S≥7.0) AND THEIR TECTONIC GEOMORPHOLOGY ALONG XIANSHUIHE XIAOJIANG FAULT ZONE

作　　者：张世民[1] 谢富仁[1] 

机构地区：[1]中国地震局地壳应力研究所,中国北京100085

出　　处：《地震学报》2001年第1期36-44,共9页Acta Seismologica Sinica

基　　金：地震科学联合基金! (950 74 2 4 )

摘　　要：划分了鲜水河—小江断裂带 7级以上历史地震的强震构造区 ,分析了各强震构造区地质构造和构造地貌特征 .认为强震构造区是沿断裂带的一些特殊构造段落 ,区内以断裂带主要分支断层的左阶斜列、并行排列或三叉构造组合为主体构造格局 .强震构造区内发育了构造较复杂的盆地类型 ,如三叉区拉分盆地、双阶区拉分盆地和阶区Seismo tectonic areas of historical strong earthquakes with magnitude M S≥ 7.0 along Xianshuihe Xiaojiang fault zone are divived, and their individual fault pattern and tectonic geomorphology are analysed. Those strong earthquake areas are located in some special parts of the fault zone, where the major branch faults of the fault zone form left stepping, parallel, and fork like patterns. In the strong earthquake areas structurally complicated basins are developed, such as pull apart basins in fork like area, in double stepping area, and in stepping and fork like areas.

关 键 词：强震构造区 断裂带 断陷盆地 断裂构造 三叉构造 

分 类 号：P315.5[天文地球—地震学]