Intrusive.
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Intrusive or plutonic igneous rocks are terms used to describe rocks that crystallize inside the Earth's crust from magma that cools slowly beneath the surface. These rocks have large mineral grains due to their slow cooling process and are typically coarse-grained in texture. Examples include granite, diorite, and gabbro.
GranitesDioritesGabbrosPegmatitesDykesSillsLayered Igneous intrusions
The type of rock that forms deepest inside Earth is known as igneous rock. This type of rock is created from the solidification of magma deep within the Earth's crust or mantle. Examples of igneous rocks that form deep inside the Earth include granite and basalt.
Igneous rocks that form below Earth's surface are called intrusive or plutonic rocks. These rocks are formed from the solidification of magma beneath the Earth's crust. Examples include granite, diorite, and gabbro.
No, igneous rocks can be formed both inside the Earth (intrusive or plutonic) and on the Earth's surface (extrusive or volcanic). Intrusive rocks form underground when magma cools slowly, while extrusive rocks form on the surface when lava cools rapidly.