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At the base of the column, material is violently forced upward out of the crater by the pressure of rapidly expanding gases, mainly steam. The gases expand because the pressure of rock above it rapidly reduces as it approaches the surface. This region is called the gas thrust region and typically reaches to only one or two kilometers above the ...
Name origin: Named by Henry D. Washburn September 18, 1870; 154 years ago (): Location: Upper Geyser Basin Yellowstone National Park Teton County, Wyoming, U.S.: Coordinates: 1]: Elevation: 7,349 ft (2,240 m) [2]: Type: Cone geyser: Eruption height: 106 to 185 ft (32 to 56 m): Frequency: 60 to 90 minutes: Duration: 1½ to 5 minutes: Discharge: 3,700–8,400 US gal (14,000–32,000 L): Old ...
Material shot out of the volcano at 2,575 kilometres per hour (715 metres per second). [10] The energy released from the explosion has been estimated to be equal to about 200 megatonnes of TNT (840 petajoules), [11] roughly four times as powerful as the Tsar Bomba, the most powerful thermonuclear weapon ever detonated. This makes it one of the ...
Shoot and scoot: a type of fire-and-movement tactic used by artillery to avoid counter-battery fire. Siege: a military blockade of a city or fortress with the intent of conquering by force or attrition, often accompanied by an assault in the later phase.
Activity continued at the Cumbre Vieja volcano on the Spanish island of La Palma on October 5, more than two weeks after its initial eruption.More than 1,000 buildings and over 400 hectares of ...
Italy's Mount Etna shot lava into the sky on Sunday, 12 November, spewing ash high over the Mediterranean island of Sicily. According to Italy's National Institute of Geophysics and Volcanology ...
A volcanic bomb or lava bomb is a mass of partially molten rock larger than 64 mm (2.5 inches) in diameter, formed when a volcano ejects viscous fragments of lava during an eruption. Because volcanic bombs cool after they leave the volcano, they are extrusive igneous rocks. Volcanic bombs can be thrown many kilometres from an erupting vent, and ...
According to the Icelandic Meteorological Office, the volcano shot lava about 50 meters (about 165 feet) high and came from a fissure that is about 1 kilometer long (about 1,100 yards).