The main shock occurred on the dextral obduction-type fault zone and the hypocenter depth was about 15km .
汶川地震的主震发生在具有右旋性质的仰冲型断层带上，震源深度为15公里左右。
2
After the collision of the two plates, the obduction movement was replaced by the pushment of the Indian plate towards the southern edge of the Eurasian plate.
两大陆碰撞后，仰冲运动结束，代之以印度板块对欧亚板块南缘的推挤。
3
The tin mineralization dies not depend on wall rocks in a certain extent, butchiefly relies on orogenic granitic belts of the obduction side of the continental crust.