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Are igneous rocks intrusive or extrusive?

Question:

Are igneous rocks intrusive or extrusive?

Igneous Rocks:

All rocks can be classified as either igneous, sedimentary, or metamorphic. Igneous rocks are formed when magma or lava cools and solidifies into stone.

Answer and Explanation:

Igneous rocks can be either intrusive or extrusive. In fact, these are terms specifically used to describe types of igneous rocks. Intrusive igneous...

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Volcanic vs Plutonic Igneous Rocks: Definition and Differences

from Earth Science 101: Earth Science

Chapter 7 / Lesson 2
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