3-D Inversion of Gravity Data of the Central and Eastern Gonghe Basin for Geothermal Exploration

The Gonghe Basin is one of the most important regions for exploration and development hot dry rock geothermal resources in China. However, there still some controversy about main heat source Basin. Combined with previous research results including three-dimensional magnetotelluric imaging linear inversion Rayleigh wave group phase velocity result, we obtained a high-resolution underground spatial density distribution model based on satellite gravity data by using 3-D focusing method. According to results, are widely distributed low anomalies relative surrounding middle crust study area. low-density layer speculated be low-velocity, high-conductivity partial melting result confirms first time existence melt from point view, this high temperature may It can provide new basis further genesis system