Q. Which of the following rocks are known as Plutonic rocks?
Answer: Deep seated Intrusive Igneous
Notes: Extrusive igneous rocks are formed by cooling of lava on the earth’s surface.  Extrusive igneous rocks are also called volcanic rocks. Intrusive igneous rocks are formed when magma solidifies below the earth’s surface. Deep seated intrusive rocks are termed as plutonic rocks. Shallow depth intrusive rocks are termed as hypabyssal.

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