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Hydrothermal Features

By , About.com Guide

Hydrothermal activity is defined as geologic activity that involves hot water, typically between 50° and 400°C, although neither end of this range is well defined. Hot water is very good at dissolving, depositing and altering rocks and minerals, and hydrothermal activity is very important in the formation of metal ores as well as geothermal energy. Here are the major features that form as a result of hydrothermal activity.
Images 1-12 of 14
Hot spotsBlack Smoker, Pacific OceanTepid spotsCold Seep, Paleo-Pacific OceanFuming holesFumarole, CaliforniaA rare dry-steam fieldGeothermal Power, New Zealand
Geology's liveliest charactersGeyser, IcelandA wild saunaHot Spring, CaliforniaUnderground sea changeHydrothermal Alteration, CaliforniaNatural mud bathsMudpot, California
Hard white crustSilica Sinter, MontanaSulfur gas springsSolfatara, IcelandMicrobial paint for water and stoneThermophiles, CaliforniaHot-water limestoneTravertine (Carbonate Sinter), California

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