Describe the difference between intrusive and extrusive examples of this type of rocks?
Question: Describe the difference between intrusive and extrusive examples of this type of rocks?
Intrusive and extrusive are two types of rocks that form from the cooling of magma or lava. Intrusive rocks form when magma cools and solidifies below the surface of the Earth. They have coarse-grained textures because they cool slowly and allow large crystals to grow. Examples of intrusive rocks are granite, gabbro and diorite. Extrusive rocks form when lava cools and solidifies on the surface of the Earth. They have fine-grained textures because they cool quickly and do not allow large crystals to grow. Examples of extrusive rocks are basalt, rhyolite and obsidian.
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