INTRUSIVE ROCK


Meaning of INTRUSIVE ROCK in English

Igneous rock formed from magma forced into older rocks at depths within the Earth's crust, which then slowly solidifies below the Earth's surface, though it may later be exposed by erosion.

Igneous intrusions form a variety of rock types. See also extrusive rock .

Britannica Concise Encyclopedia.      Краткая энциклопедия Британика.