You searched for: “volcanism
volcanism, vulcanism
1. The processes by which magma and its associated gases rise up into the crust and are extruded onto the earth's surface and into the atmosphere.
2. Volcanic power or action; volcanicity.

The term ordinarily includes all natural processes resulting in forming volcanoes, lava fields, laccoliths, dikes, etc.

This entry is located in the following unit: volcan-, vulcan- + (page 2)