Answer: Plutonic (intrusive igneous rocks), because of their cooling rates, are to be distinguished having - relatively large crystals.
Explanation: Plutonic in minerology are rocks formed deep in the Earth's crust, rather than by volcanoes at the surface of the Earth. "Pluton" is a general term to describe an intrusive igneous body.
The most common rock types in plutons are granite, granodiorite, tonalite, monzonite, and quartz diorite.
They are believed to be formed from either one single magmatic event, or several incremental events.
