华南块体的现今构造运动与内部形变

CONTEMPORARY TECTIONIC MOVEMENT AND INTERNAL DEFORMATION OF SOUTH CHINA BLOCK

运用华南块体及周围地区最新的GPS观测结果,研究了华南块体的现今构造运动。华南块体无论是相对于欧亚板块或相对于西伯利亚块体都存在逆时针方向的旋转。由GPS观测结果得到的华南块体相对于西伯利亚块体的现今旋转运动与由地质学和地球物理学方法得到的自晚新生代以来华南块体相对于西伯利亚的旋转运动相比,运动速率相同,但运动方向顺时针旋转了20.7°。

In this paper we have studied the contemporary tectonic movement of South China block by use of the latest GPS data. The South China block has a counterclockwise rotation relative to both Eurasia block and Siberia block. We made a comparison between the contemporary rotational motion of South China block relative to Siberia block acquired from GPS data and that since the late Cenozoic obtained by geological and geophysical methods. We have found that the motion rate acquired from GPS is almost the same as that obtained by geological and geophysical methods,but its motion rotating orientation clockwise by 20.7° with respect to that obtained from geological and geophysical data.