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Physical Phenomena > Geological Phenomena > Volcanic Eruptions

Preferred term

Volcanic Eruptions  

Type

  • Topical Descriptor

Broader concept

Entry terms

  • Eruptions, Volcanic
  • Eruption, Volcanic
  • Volcanic Eruption

Note

  • specify geographic term if pertinent

Scope note

  • The ash, dust, gases, and lava released by volcanic explosion. The gases are volatile matter composed principally of about 90% water vapor, and carbon dioxide, sulfur dioxide, hydrogen, carbon monoxide, and nitrogen. The ash or dust is pyroclastic ejecta and lava is molten extrusive material consisting mainly of magnesium silicate. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

History note

  • 2009 (1995); use NATURAL DISASTERS 1982-1994

In other languages

URI

http://www.yso.fi/onto/mesh/D018707

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