川滇菱形块体各边界垂直形变速率与断层活动特性

Vertical deformation rates and active characters about several boundaries of Sichuan and Yunnan rhombus block

依据川滇菱形块体各边界带上所有跨断层垂直形变测量资料,计算各断裂带垂直形变速率合成值,分析 各断裂带形变速率特征。结果表明,川滇菱形块体断层活动有南强北弱,西强东弱的特点。该块体东北边界断 层活动北段是以压性为主的逆断层,南段是以张性为主的正断层,西南边界断层活动北段以压性为主,南段则 以张性为主。

According to the data of vertical deformation from observation sites along the boundaries of Sichuan and Yunnan rhombus blocks, we calculate each fault deformation rates and make a summary of their deformation characters. Our results show that the activities for each fault are not same, the activities of the north faults are bigger than that of the south, and the west faults' are bigger than that of the east. The activities in the northeast blocks boundaries are compression and the faults in the south blocks boundaries are tension.