mention the use of the three types of rocks in five different sectons with suitable example
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Intrusive
Extrusive
Intrusive Igneous Rock
Intrusive igneous rocks form when magma cools slowly thousands of feet below the Earth’s surface. Most intrusive rocks have large, well-formed crystals. Examples of intrusive igneous rocks include granite, gabbro, diorite and dunite.
Extrusive Igneous Rock
Extrusive igneous rocks form when magma reaches the Earth’s surface a volcano and cools quickly. Most extrusive (volcanic) rocks have small crystals. Examples of extrusive igneous rocks include basalt, rhyolite, andesite, and obsidian.
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