With the methods of investigation which includes physiognomy,quaternary,tectonic and earthquake,the quartz shape scanning in the fracture zone and ESR dating,we draw a conclusion that Meigu River fracture zone is composed of three imbricate faults,which has not been active since the middle Pleistocene,and it is not an.

Traditional algorithm of hemisphere texture mapping in two-part texture mapping is based on stereo-projection, where the texture distortion is unavoidable.