Geological Characteristics and Distribution of Granite Geothermal Reservoir in Southeast Coastal Areas in China

The southeast coastal areas in China have distributed lots of granite outcrops different periods. Previous research has shown that geothermal reservoirs are also under sedimentary basins these areas, such as Zhangzhou basin. Therefore, granites with fractures buried deep can be used a potential reservoir areas. In order to study geological conditions the and discuss genesis system, rock geochemistry zircon U-Pb chronology from outcrop parts drilling cores granitic rocks been analyzed, combined anatomy seismic data electromagnetic detection selected area. Based on results chronology, most this area Yanshanian data, thickness overlying strata Huangshadong Huizhou City is up 1.5 km. According regional survey, multi-stage joints developed granite, hot springs rise intersection fracture directions surface. heat source mainly comes mantle carried by NNE-trending faults. There large number thermal at surface NW-trending fault, fault provides drainage for upwelling underground springs. huge amount resources analysis genetic models provide guidance evaluation further optimization favorable zones