Abstract

The future green world, without of greenhousegases, is possible to produce the electricity from the renewableenergy resources. The geothermal is one of the most potentialclean energy sources to be developed in the next century. Thegeothermal energy potential study needs the temperature valueand amount of stored heat in the underground rocks. Thepurpose of this research is to determine the earth’s crusttemperature at the depth of 3.5 to 10.5km for geothermalenergy potential calculation in Afghanistan. The temperature atdepth prediction model is based on the tectonic ages, tectonicactivity, geological structures, and hot spring data. To achievethis goal, in GIS, the earth’s crust thickness, sediment thickness,surface heat flow, mantle heat flow, and surface temperaturehave been mapped. The temperature calculation formulas, as afunction of depth, were applied in GIS model to estimate thetemperature at depth. The analysis contains the sediment andbasement contribution along with surface temperaturecorrection considering the constant thermal conductivity andradioactive heat generation in the crust. The resulting maps areplotted for each km of depths from 3.5 to 10.5km. Thecalculation result is in the range of; minimum 39°C andmaximum 347°C average temperature at the depth of 3.5kmand 10.5 km respectively. The huge geothermal energy (powerproduction) is available; First in Helmand, Kandahar, andHerat provinces, moreover, in northern and eastern deepersedimentary region of the country at the depth of 3.5km. Secondin the all known geothermal fields of the country until the depthof 5 km.