Hot spring

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• A hot spring, hydrothermal spring, or geothermal spring is a spring produced with the aid of the emergence of geothermally heated groundwater onto the floor of the Earth. The groundwater is heated either via shallow bodies of magma (molten rock) or through stream through faults to warm rock deep in the Earth's crust. In both case, the final supply of the heat is radioactive decay of naturally taking place radioactive elements inside the Earth's mantle, the layer below the crust.

• Hot spring water regularly consists of huge amounts of dissolved minerals. The chemistry of hot springs degrees from acid sulfate springs with a pH as little as 0.8, to alkaline chloride springs saturated with silica, to bicarbonate springs saturated with carbon dioxide and carbonate minerals. Some springs also contain ample dissolved iron. The minerals brought to the floor in hot springs frequently feed communities of extremophiles, microorganisms adapted to extreme situations, and it's miles viable that life on Earth had its beginning in warm springs.

• Humans have made use of warm springs for bathing, relaxation, or medical therapy for thousands of years. However, some are warm sufficient that immersion may be harmful, leading to scalding and, doubtlessly, demise.