| Abstract |
Korea Institute of Geoscience and Mineral Resources (KIGAM) have launched a new geothermal development project in Seokmo Island, Korea in 2009, which is funded by ministry of knowledge economy. The purpose of the project is to develop deep geothermal water of over 95 C within 3 km depth and to utilize the geothermal water for combined heat and power generation, which will be the first geothermal power plant in Korea. Preliminary geological and geophysical surveys have been carried out for deep geothermal development in Seokmo Island, Korea. Basement rocks, mainly Precambrian schist and granite in Jurassic or Cretaceous periods can be found even on the surface or close to the surface. In this crystalline formation, the most possible scenario for the geothermal regime can be a deep circulation of sea water along with the fracture systems. Magnetotelluric surveys, geophysical well logs and drilling results support the scenario. Additional geophysical investigations, such as additional MT surveys to cover wider area and seismic reflection survey, borehole surveys, and well loggings for more than 20 existing boreholes, will be followed to get information of deeper parts. |