Why is a volcano often a good resource for geothermal energy production?
A volcano is formed due to movement of underground magma and plate tectonics. The magma heats rocks and the water naturally present in the surrounding geologic formations. Some of this water is pressurized in the rock layers below the volcano and its flanks. Worldwide, caldera-hosted geothermal systems are often productive from permeable flank fault zones and from central sub-volcanic features. .
