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

Add a new term

Contributors in Volcano

Become a Contributors

Volcano

rhyodacite

Natural environment; Volcano

An extrusive rock intermediate in composition between dacite and rhyolite.

rhyolite

Natural environment; Volcano

Volcanic rock (or lava) that characteristically is light in color, contains 69% silica or more, and is rich in potassium and sodium.

ridge, oceanic

Natural environment; Volcano

A major submarine mountain range.

rift system

Natural environment; Volcano

The oceanic ridges formed where tectonic plates are separating and a new crust is being created; also, their on-land counterparts such as the East African Rift.

rift zone

Natural environment; Volcano

A zone of volcanic features associated with underlying dikes. The location of the rift is marked by cracks, faults, and vents.

ring of fire

Natural environment; Volcano

The regions of mountain-building earthquakes and volcanoes which surround the Pacific Ocean.

scoria

Natural environment; Volcano

A bomb-size (> 64 mm) pyroclast that is irregular in form and generally very vesicular. It is usually heavier, darker, and more crystalline than pumice.