Volcano Articles

• Volcanoes
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  Nature of Water
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  Volcanic rock

  Volcanic rock is an igneous rock of volcanic origin. Volcanic rocks are usually fine-grained or aphanitic to glassy in texture. They often contain clasts of other rocks and phenocrysts. Phenocrysts ... > more
• Volcanoes
  Natural Disasters
  Earthquakes
  Caving
  Geography
  Geology
   
  

  Mount Etna

  Mount Etna is an active volcano on the east coast of Sicily, close to Messina and Catania. It is the largest active volcano in Europe, currently standing about 3,350 m (10,991 ft) high, though it ... > more
• Earthquakes
  Natural Disasters
  Tsunamis
  Volcanoes
  Earth Science
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  Great Chilean Earthquake

  The Great Chilean Earthquake or Valdivia Earthquake (Terremoto de Valdivia in Spanish) of May 22, 1960 is the largest magnitude earthquake recorded since seismographic monitoring ... > more
• Landslides
  Natural Disasters
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  Snow and Avalanches
  Geology
  Earth Science
   
  

  Landslide

  A landslide is a geological phenomenon which includes a wide range of ground movement, such as rock falls, deep failure of slopes, and shallow debris ... > more
• Volcanoes
  Natural Disasters
  Sports Science
  Geology
  Global Warming
  Early Climate
   
  

  Volcano

  A volcano is an opening (or rupture) in the Earth's surface or crust, which allows hot, molten rock, ash, and gases to escape from deep below the surface. Volcanic activity involving the extrusion of ... > more
• Volcanoes
  Global Warming
  Severe Weather
  Weather
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  Storms
   

  Year Without a Summer

  The Year Without a Summer, also known as the Poverty Year and Eighteen hundred and froze to death, was 1816, in which severe summer climate abnormalities destroyed crops in Northern Europe, the ... > more
• Volcanoes
  Geology
  Natural Disasters
  Geography
  Caving
  Oceanography
   
  

  Basalt

  Basalt is a common gray to black volcanic rock. It is usually fine-grained due to rapid cooling of lava on the Earth's surface. It may be porphyritic containing larger crystals in a fine matrix, or ... > more
• Volcanoes
  Natural Disasters
  Tsunamis
  Geography
  Geology
  Earthquakes
   
  

  Krakatoa

  Krakatoa is a volcanic island in the Sunda Strait between Java and Sumatra in Indonesia. It has erupted repeatedly, massively and with disastrous consequences throughout recorded history. The best ... > more
• Rainforests
  Geology
  Volcanoes
  Earthquakes
  Natural Disasters
  Earth Science
   
  

  Hotspot (geology)

  In geology, a hotspot is a location on the Earth's surface that has experienced active volcanism for a long period of time. Hotspots were thought to be caused by a narrow stream of hot mantle ... > more
• Volcanoes
  Geology
  Sports Science
  Natural Disasters
  Geography
  Nature of Water
   
  

  Igneous rock

  Igneous rocks are formed when molten rock (magma) cools and solidifies, with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive ... > more

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