FENCE DIAGRAM OF LITHOSPHERE STRUCTURE OF CHINA CONTINENT AND ITS EXPLANATIONBY USING GEOPHYSICAL DATA OF 10 GGTS
We edited and explained the fence diagram of lithosphere structure in China by using the geophysical data of 10 GGTs in China continent. Through correlation on the geophysical characteristic and geological analysis, we achieved some conclusions. Firstly, China continent can be divided into three lithospheric tectonic regions and the edges of the regions are the gravitational gradient zone in Daxing'an Mountain-Taihang Mountain-Wuling Mountain and the gravitational gradient zone around Qinghai-Tibet Plateau. Secondly, China continental crust has not only trisection structure but also dichotomy structure. Finally, a series of low-velocity zones, high-conduction zones and earthquake belts were identied . At the both side of the gravitational gradient zone of Daxing'an Mountain-Taihang Mountain-Wuling Mountain, the basin has different geophysical characteristics, which is connected with the course of the tectogenesis and the isostatic adjustment. Moho has inner structure and can be found all over the continent. The geophysical anomaly in the bottom of lower crust may be connected with Moho or the change in the top-part of the mantle.