图2  会东地震区域活断裂及历史地震震中分布图

     ①小江断裂带；②则木河断裂带；③普渡河断裂带；④金沙江东西向断裂带

Fig.2  Map of regional active faults and the epicentral 

       distribution of historical earthquakes around Huidong 

       epicentral area