DOI: 10.5176/2251-3353_GEOS13.43
Authors: M. Erkan KARAMAN and Halil BÖLÜK
Abstract: Tectonics and geophysics are key studies to determine physical properties of a geothermal area, so the relationship between geothermal and tectonics is very important as accepted with a lot of research about geothermal. The best way to specify these properties electrical resistivity is the most used method. Eldivan (Çankırı – TURKEY) presents a good example location for that. Study area is located near Turkey’s most active fault zone (North Anatolian Fault Zone). Also the study area provides all requirements for a geothermal system’s main elements (hot source, active faults, sufficient hydraulic and hydrogeological conditions and a suitable stratigraphic sequence). Along the study, all of these elements recognized and confirmed by geological, geochemical and mostly geophysical methods. Geophysical data shoes VES3 point present a suitable resistivity (about 5 – 10 ohm.m) at 1400 – 1500 meters depth for a geothermal system. But when all of these data (stratigraphic, hyrogeochemical data) evaluated together, this low resistivity can be as a result of two subject; a geothermal source or a salty level that is interaction with cold or warm water. To solve this problem an investigation sounding (about 400 m. depths) and new deeper vertical electrical soundings (VES) points offered to decide a certain location for production sounding.
Keywords: geothermal, geophysical research, tectonic, dc rezistivity
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