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  2. Hydrothermal explosion - Wikipedia

    en.wikipedia.org/wiki/Hydrothermal_explosion

    Small 2009 hydrothermal explosion in Biscuit Basin, Yellowstone National Park. Hydrothermal explosions occur when superheated water trapped below the surface of the Earth rapidly converts from liquid to steam, violently disrupting the confining rock. Boiling water, steam, mud, and rock fragments are ejected over an area of a few meters up to ...

  3. Surprise blast of rock, water and steam in Yellowstone sends ...

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    The hydrothermal explosion did not indicate new activity within the volcanic system, which remains at normal levels, according to the U.S. Geological Survey.

  4. Glossary of geology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_geology

    Also called Indianite. A mineral from the lime-rich end of the plagioclase group of minerals. Anorthites are usually silicates of calcium and aluminium occurring in some basic igneous rocks, typically those produced by the contact metamorphism of impure calcareous sediments. anticline An arched fold in which the layers usually dip away from the fold axis. Contrast syncline. aphanic Having the ...

  5. Geothermal areas of Yellowstone - Wikipedia

    en.wikipedia.org/wiki/Geothermal_areas_of...

    Five groups of hydrothermal features comprise the basin, and all of them contain geysers, although some are dormant. [ 22 ] Between Shoshone Lake and Old Faithful is the Lone Star Geyser Basin , of which the primary feature is Lone Star Geyser , named for its isolation from the nearby geysers of the Upper Geyser Basin.

  6. Hydrothermal explosion leads to closure of parts of ... - AOL

    www.aol.com/hydrothermal-explosion-leads-closure...

    Based on the occurrence of large hydrothermal explosion events over the past 16,000 years, an explosion large enough to create a 100-(meter)- (328-ft-) wide crater might be expected every few ...

  7. Phreatic eruption - Wikipedia

    en.wikipedia.org/wiki/Phreatic_eruption

    The extreme temperature of the magma (anywhere from 500 to 1,170 °C (930 to 2,100 °F)) causes near-instantaneous evaporation of water to steam, resulting in an explosion of steam, water, ash, rock, and volcanic bombs. [2] At Mount St. Helens in Washington state, hundreds of steam explosions preceded the 1980 Plinian eruption of the volcano. [2]

  8. Yellowstone closes Biscuit Basin for the season after ... - AOL

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    An area of Yellowstone National Park that saw a hydrothermal explosion that launched steam and debris into the air Tuesday will be closed for the rest of the season because more blasts may occur ...

  9. Geyser - Wikipedia

    en.wikipedia.org/wiki/Geyser

    The vents of such geysers are artificial, but are tapped into natural hydrothermal systems. These so-called artificial geysers, technically known as erupting geothermal wells, are not true geysers. Little Old Faithful Geyser, in Calistoga, California, is an example. The geyser erupts from the casing of a well drilled in the late 19th century ...

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