Volcano

Volcano

A vent or opening in a planet's surface that lets out pressurized molten rocks or magma, and gases from the inner core. Volcanoes come in various shapes and structure, but the most common ones are mountain-like structures with a crater at the summit.

Industry: Natural environment

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Volcano

eruption cloud

Natural environment; Volcano

The column of gases, ash, and larger rock fragments rising from a crater or other vent. If it is of sufficient volume and velocity, this gaseous column may reach many miles into the stratosphere, ...

eruptive vent

Natural environment; Volcano

The opening through which volcanic material is emitted.

evacuate

Natural environment; Volcano

Temporarily move people away from possible danger.

extinct volcano

Natural environment; Volcano

A volcano that is not presently erupting and is not likely to do so for a very long time in the future.

extrusion

Natural environment; Volcano

The emission of magmatic material at the earth's surface. Also, the structure or form produced by the process (e.g., a lava flow, volcanic dome, or certain pyroclastic rocks).

fault

Natural environment; Volcano

A crack or fracture in the earth's surface. Movement along the fault can cause earthquakes or--in the process of mountain-building--can release underlying magma and permit it to rise to the surface.

fault scarp

Natural environment; Volcano

A steep slope or cliff formed directly by movement along a fault and representing the exposed surface of the fault before modification by erosion and weathering.