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- Volcano - Wikipedia
A volcano is a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface [1]
- Volcano Hazards Program | U. S. Geological Survey
There are about 170 potentially active volcanoes in the U S The mission of the USGS Volcano Hazards Program is to enhance public safety and minimize social and economic disruption from volcanic unrest and eruption through our National Volcano Early Warning System
- Volcano | Definition, Types, Facts | Britannica
Volcano, vent in the crust of Earth or another planet or satellite, from which issue eruptions of molten rock, hot rock fragments, and hot gases The term volcano can also refer to the landform created by the accumulation of solidified lava and volcanic debris near the vent
- Which Volcanoes are Erupting? - List map of Active Volcanoes Erupting . . .
List map of currently active volcanoes Notes: The status colors of volcanoes are our subjective interpretation of activity status (unrest, alert, erupting, major eruption) and have no official significance, although we try to keep them in agreement with various existing official color and alert codes
- Anatomy of a Volcano - U. S. National Park Service
Volcanoes are both the vents where molten rock material and volcanic gases are erupted from within Earth’s interior, and the cones and mountains built up around those vents But beyond this simple definition, volcanoes are incredibly diverse with some types being very complex
- Global Volcanism Program - Smithsonian Institution
Concise daily volcanic activity summaries are published Monday through Friday and describe volcanic activity that has occurred and been reported by volcano observatories or other authoritative agencies during the preceding ~24 hours
- Volcano World | Oregon State University
Volcanoes have killed thousands of people and caused some of the most frightening events in human history This site includes information about volcanoes, their activity, and how they form and erupt
- Volcanoes: Facts, news, features and articles about geologys fieriest . . .
From lava fountains to towering ash clouds, volcanoes produce some of the most dramatic geological events on the planet Volcanoes are cracks in Earth's crust that allow molten rock and hot
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