Igneous rocks are found where?
Answers
Answer:
Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust. All magma develops underground, in the lower crust or upper mantle, because of the intense heat there.
Explanation:
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Answer:
Origin
Igneous rocks (derived from the Latin word for fire, ignis) can have very different mineral backgrounds, but they all share one thing in common: they formed by the cooling and crystallization of a melt. This material may have been lava erupted at the Earth's surface, or magma (unerupted lava) at depths of up to a few kilometers, known as magma in deeper bodies.
Those three different settings create three main types of igneous rocks. Rock formed of lava is called extrusive, rock from shallow magma is called intrusive, and rock from deep magma is called plutonic. The deeper the magma, the slower it cools, and it forms larger mineral crystals.