gravity fault
2.By using known analytic expressions of the displacement due to a slip of a fault of any dipping angle in an elastic or visco-elastie half-space, we have calculated by three-dimensional numerical integration, the additional gravity field on the ground surface, resulting from various types of fault movements in an elastic or genera lized Kelvin medium, as well as the tendency of gravity change with time given rise by the rheological behavior of the medium.
4.The text analyse region characteristic and rule of gravity and magnetism annormity in Chaoshan depression,conclusion think that the Chaoshan depression is tectonic transition belt of join two tectonic element about the dongsha islands to the xisha islands,the fault of turning towards the basin control growth of the Mesozoic group.
5.The authors hold that the joint actions of numerous factors such as the upper mantle uplifted zone (the mantle thinned zone of lithosphere), the upper mantle anomalous area (relatively low-velocity area), the uplifted zone of intracrustal high-conductivity layer, the deep fault (shear zone of lithosphere), the margin of the crust-upper mantle uneven masses, the basement uplifted area reflected by gravity high, the magmatic belt and tectonic intersection reflected by skipped magnetic field, control the distribution of auriferous skarn deposits and copper (associated with gold) skarn deposits.
