Question

why are intrusive igneous rocks usually coarse graines​

Answer 1

Answer:

Intrusive or plutonic rocks crystallize from magma beneath the earth's surface. ... The texture of an igneous rock (fine-grained vs coarse-grained) is dependent on the rate of cooling of the melt: slow cooling allows large crystals to form, fast cooling yields small crystals.

Explanation:

BTS ARMY

Answer 2

• Intrusive or plutonic rocks crystallize from magma beneath the earth's surface. ... The texture of an igneous rock (fine-grained vs coarse-grained) is dependent on the rate of cooling of the melt: slow cooling allows large crystals to form, fast cooling yields small crystals.

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