摘要
本文根据实地调查,分析了小江西支断裂南段两条分支断裂的展布特征及其活动性。用冲沟长度、错动量及平均侵蚀速率,估算了断裂的水平滑动速率。指出南段分支断裂作多重右阶斜列展布,现今活动以左旋走滑为主,兼有倾向运动分量,全新世以来平均水平滑动速率为1.66mm/a。
In this paper, based on the field investigation, the geometric characteristics and activity of the Jianshui fault and the Lihaozhai fault, the two branch faults on southern segment of the Xiaojing fault zone, are analysed and the slip rate of the fault is calculated by using the length, displacement and corrosion rate of gully. The average slip rate of the Jianshui iault is 1.66mm/year since Ho-locene. Both Jianshui fault and the Lihaozai fault arc anticlockwise strike-slip faults with dip slip component and their geometric feature is obsviously multiple right-lateral en echelon distribution.
出处
《地震研究》
CSCD
北大核心
1993年第3期291-298,共8页
Journal of Seismological Research
关键词
小江断裂带
建水断裂
断裂活动性
Xiaojing fault zone, Jianshui fault, Lihaozhai fault, Fault activity
