plutonic rock
Definitions
Igneous rock formed by the cooling and solidification of magma deep beneath the Earth's surface.
A coarse-grained rock, such as granite, resulting from the slow crystallization of magma within the crust.
Examples
Granite is a common type of plutonic rock that forms from the slow cooling of magma beneath the Earth's surface.
Geologists studied the mineral composition of the plutonic rock to determine the cooling history of the ancient volcanic chamber.