云南新构造运动年代学特征及其与地震活动关系研究  

THE NEOTECTONIC MOVEMENT AND THE CHRONOLOGICAL FEATURE OF ACTIVE FAULT IN YUNNAN

作　　者：毛玉平[1] 吴伯黔[1] 何蔚[1] 俞维贤[1] 杨继武[1] 

机构地区：[1]云南省地震局

出　　处：《地震研究》1997年第4期438-446,共9页Journal of Seismological Research

摘　　要：云南是一个新构造运动复杂，地震活动强烈的地区。自有地震记载以来，该区共发生７—７．９级地震１６次，８级地震１次。通过对云南新构造运动特点分析该区新构造运动分区现象及年代学差异明显，全新世断裂活动主要集中在新构造单元边界断裂和新构造运动强烈地区的较大规模的断裂上，这些断裂大多是７级以上大震的发震构造。Yunnan is a province with complex neotectonic movement and intense seismicity. Based on the analysis on neotectonic movement feature, the regionalization phenomenon of neotectonic movement in Yunnan is very obvious, and 5 major neotectonic units can be divided in Yunnan. The difference in the neotectonics features and chronology in these units is obvious. The boundary faults of these major units are mainly the Holocene active fault. The Holocene active faults developed along the units boundary and in the inner of units all are the seismogenic faults of the earthquakes with magnitude of M≥7. The faults which length is usually tens kilometer and developed in the inner of units are usually the pleistocene active fault. The seismicity in the inner of unit is related with the complexity of neotectonics and fault chronolgy.

关 键 词：活断层 地震活动性 云南 年代学 新构造运动 

分 类 号：P546[天文地球—构造地质学] P315.5[天文地球—地质学]