volcanic
Rock formed from magma erupted from a volcano.
The sudden occurrence of a violent discharge of steam and volcanic material.
Refers to the range of events related to volcanic processes, from gas emissions to eruptions.
A mountain built up by the eruption of lava and ash.
Fine particles of pulverized rock and glass created during volcanic eruptions.
An island formed by the eruption of a volcano from the ocean floor.
A bowl-shaped depression at the summit of a volcano.
A powerful and destructive eruption characterized by a sudden release of pressure.
A mixture of rock fragments, ash, and other materials ejected from a volcano.
Soil derived from volcanic ash and lava, often very fertile.
An opening in the Earth's crust through which molten rock and gas erupt.