Hydrothermal
Volcano Learning zone > Volcano Glossary
Water warmed by volcanic activity within the ground. Geysers, fumaroles,mud pots/pools and springs are are are surface hydrothermal features. On the sea bed black and white smokers are hot mineral rich rich jets of water which support their own ecosystems.
The water for hydrothermal systems is normally sourced from ground or sea water which has pentrated the earths crust and become warmed by the magmatic bodies or hot rocks below, it then rises to the surface dissolving minerals on its rise.