volcanic explosion - significado y definición. Qué es volcanic explosion
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Qué (quién) es volcanic explosion - definición

VOLCANIC ERUPTION IN WHICH GAS DISSOLVED UNDER PRESSURE WITHIN MAGMA VIOLENTLY FROTHS INTO VOLCANIC ASH WHEN PRESSURE AT THE VENT SUDDENLY DROPS
Explosive Eruption; Explosive eruptions; Violent eruption; Violent volcano; Volcanic explosion
  • [[Mount St. Helens]] explosive eruption on July 22, 1980
  • Eruption of [[Mount Pinatubo]] in the Philippines on June 12, 1991 (PST). Its ash would spread as far west as mainland South East Asia.

Explosive eruption         
In volcanology, an explosive eruption is a volcanic eruption of the most violent type. A notable example is the 1980 eruption of Mount St.
Volcanic rock         
  • {{okina}}A{{okina}}ā next to pāhoehoe lava]] at the [[Craters of the Moon National Monument and Preserve]], Idaho, United States.
  • Le Maitre, R.W.}} (''ed.''); 1989: ''A classification of igneous rocks and glossary of terms'', Blackwell Science, Oxford.
  • A German example of [[latite]], a type of volcanic rock
  • Photomicrograph of a [[volcanic lithic fragment]] ([[sand grain]]); upper picture is plane-polarized light, bottom picture is cross-polarized light, scale box at left-center is 0.25 millimeter.
  • Vesicular olivine basalt from [[La Palma]] (green [[phenocrysts]] are [[olivine]]).
  • sp=us}} piece of [[pumice]] supported by a rolled U.S. $20 bill demonstrates its very low density.
  • A sample of rhyolite
  • Amsterdam Island]] in the Indian Ocean
  • Volcanic rocks, [[Porto Moniz]], [[Madeira]]
ROCK FORMED FROM LAVA ERUPTED FROM A VOLCANO
Volcanic Rock; Lava rock; Effusive rock; Volcanite; Igneous volcanic rock; Axiolitic; Volcanic rocks; Lava stone; Volcanics; Black volcanic rock; Subalkaline igneous rocks; Subalkaline volcanic rock; Alkaline volcanic rock; Peralkaline volcanic rock
Volcanic rock (often shortened to volcanics in scientific contexts) is a rock formed from lava erupted from a volcano. In other words, it differs from other igneous rock by being of volcanic origin.
Nuclear explosion         
  • Greenhouse]] George test early fireball.
  • Upshot–Knothole Grable test (film)
EXPLOSION THAT OCCURS AS A RESULT OF RAPID RELEASE OF ENERGY FROM A NUCLEAR REACTION (FISSION OR FUSION)
Nuclear explosions; Nuclear detonation; Atomic explosion; Thermonuclear explosion; Moderated nuclear explosion; Atmospheric nuclear weapons explosion; Detect nuclear explosions; Nuclear weapon detonation
A nuclear explosion is an explosion that occurs as a result of the rapid release of energy from a high-speed nuclear reaction. The driving reaction may be nuclear fission or nuclear fusion or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate fusion, and a pure fusion weapon remains a hypothetical device.

Wikipedia

Explosive eruption

In volcanology, an explosive eruption is a volcanic eruption of the most violent type. A notable example is the 1980 eruption of Mount St. Helens. Such eruptions result when sufficient gas has dissolved under pressure within a viscous magma such that expelled lava violently froths into volcanic ash when pressure is suddenly lowered at the vent. Sometimes a lava plug will block the conduit to the summit, and when this occurs, eruptions are more violent. Explosive eruptions can expel as much as 1,000 kg (2,200 lb) per second of rocks, dust, gas and pyroclastic material, averaged over the duration of eruption, that travels at several hundred meters per second as high as 20 km (12 mi) into the atmosphere. This cloud may subsequently collapse, creating a fast-moving pyroclastic flow of hot volcanic matter.

Ejemplos de uso de volcanic explosion
1. About 8,300 years ago, there was a mighty volcanic explosion at Mt.
2. Squyres said it appears that the rocks were formed from a volcanic explosion, but more study is needed.
3. Monday October 1, 2007 ':31 AM SAN‘A, Yemen (AP) – A volcanic explosion rocked a tiny Yemeni island in the Red Sea, spewing lava and ash hundreds of feet into the air and forcing Yemeni authorities to evacuate a military base.