intrusive rock
Definitions
Igneous rock formed from magma that cools and solidifies beneath the Earth's surface.
A type of rock characterized by large crystals resulting from the slow cooling of molten material within the crust.
Examples
Granite is a common type of intrusive rock that forms when magma cools slowly beneath the Earth's surface.
The geologist identified the large formation as an intrusive rock because of its coarse-grained crystalline structure.
Unlike extrusive rocks that cool quickly on the surface, an intrusive rock develops large crystals due to the extended cooling period underground.