一、引言川滇地区现代地壳运动的水平运动一直是个有争议的问题。它地处我国东西两种构造域的分界带——约１００°Ｅ～１０５°Ｅ，西部构造运动通过这一带影响东部，故构造运动比较活跃、复杂，且地震频发。就构造分区而言，川滇断块即扬子地块西部边缘，它不是独立的岩... I. INTRODUCTION The horizontal movement of modern crustal movement in Sichuan-Yunnan region has always been a controversial issue. It is located in the boundary between the two tectonic domains of East China and West China - about 100 ° E ~ 105 ° E. The western tectonic movement affects the eastern part of the country through this zone. Therefore, the tectonic movement is relatively active and complicated with frequent earthquakes. As far as structural zoning is concerned, the Sichuan-Yunnan fault block is the western edge of the Yangtze block and it is not an independent rock ...