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2014-07-30T00:50:27+05:30

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A natural geyser is a natural spring of water that is ejected intermittently and turbulently from the surface of earth.  Afterwards there is ejection of water vapour.
These natural geysers are formed due to hydro-geological conditions.

  These exist only at a few locations (1000) on Earth. These natural geysers are located near some volcanos which are active. The formation of geyser is due to magma.  The water on the surface of Earth is up to a depth of 2 km inside earth and at the bottom we have very hard and hot rocks.  The water boils due to heat and due to high pressure inside, comes out to the top and ejects as steam out through its vent. This is also called hydro thermal explosion.
Earthquakes could change natural geyers activity.  If mineral deposits take place on the vent of geyser then it may stop gradually.  There are some very small hot springs of water found near geysers.
Water vapor jets have been observed near the south pole of planet Saturn's moon Enceladus.
 Geothermally heated water rises toward the surface by convection through porous and fractured rocks. Geysers differ from non-eruptive hot springs in their subterranean structure; consist of a small vent at the surface connected to one or more narrow tubes that lead to underground reservoirs of water and pressure-tight rock.
Many people destroyed geyser by throwing litter and garbage into them. Geothermal energy power plants have cooled the geysers by taking away hot water them them.
Geysers have colors also due to the life (like some bacteria) in them, that survive even at that hot temperature.
Yellow national park USa and valley of geysers in Russia are examples of natural geysers.

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