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They are made slowly. This is why they have a coarse-grained or rough texture. On the other hand there are extrusive igneous rocks, which are formed quuickly. These have a fine-grained or smoother texture. Intrusive rocks have more time to cool, so the mineral crystals can grow bigger, but extrusive rocks have lss time for their mineral crystals to grow.Igneous rocks form when magma cools and hardens.

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Related Questions

What is the igneous rocks made underground?

intrusive rock


Rocks created when melted rocks from inside earth cools?

igneous intrusive


What term describes igneous rocks that crystallize inside the Earth?

Intrusive igneous rocks.


Are intrusive igneous rocks heavy or light?

Intrusive rocks are light.


Can rocks both have igneous and intrusive?

Rocks can be classified as either igneous or intrusive, but not both. Igneous rocks are formed from the cooling and solidification of magma (molten rock) above or below the Earth's surface. Intrusive rocks specifically form from magma that cools and solidifies underground, beneath the Earth's surface.


What Igneous rocks are cooled within the Earth?

Intrusive igneous rocks.


What are Igneous rocks that formed beneath Earth's surface called?

Igneous rocks that are formed deep inside earth are called intrusive igneous rocks. These rocks are created when magma cools over millions of years inside earth. As it is cools, elements combine and form minerals. Intrusive igneous rocks are usually identified because they have visible crystals.


Rocks made by the cooling of magma are called?

Intrusive igneous rocks are formed by the cooling of magma.


Are granite rocks igneous rocks?

Yes. More exactly, intrusive igneous rocks.


Which igneous rocks form below earth's surface?

Igneous rocks that form below the Earth's surface are called intrusive igneous rocks. Examples include granite, diorite, and gabbro. These rocks cool and solidify slowly, allowing large crystals to form.


Are intrusive igneous rocks formed after a volcano?

no there are wood roks made out of a volcano


Is schist an intrusive or extrusive rock?

Neither, Igneous rock is either intrusive or extrusive. Thats what intrusive and extrusive is... A igneous rock.