volcanism – מילון אנגלי-אנגלי
volcanism
n.
volcanic processes and phenomena
Volcanism
Volcanism is the phenomenon of eruption of molten rock (
magma) onto the surface of the Earth or a solid-surface planet or moon, where
lava,
pyroclastics and
volcanic gases erupt through a break in the surface called a vent. It includes all phenomena resulting from and causing magma within the
crust or
mantle of the body, to rise through the crust and form
volcanic rocks on the surface.
volcanism
Noun
1. the phenomena associated with volcanic activity
(hypernym) geological phenomenon
Volcanism
(n.)
Volcanic power or action; volcanicity.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
About
volcanism
The set of geological processes that result in the expulsion of lava, pyroclastics, and gases at the Earth's surface.
