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  • Cooling Rates in Coarse-Grained Igneous Rocks: Understanding Granite Formation
    Coarse-grained igneous rocks, like granite, cool slowly.

    Here's why:

    * Crystallization: As magma cools, minerals start to crystallize. The slower the cooling rate, the more time the minerals have to grow into larger crystals.

    * Depth of Formation: Coarse-grained rocks typically form deep underground, where the heat from the Earth's interior keeps the magma hot for a longer period.

    * Insulation: The surrounding rock acts as an insulator, slowing down the rate of heat loss from the magma.

    In contrast, fine-grained igneous rocks, like basalt, cool rapidly, resulting in smaller crystals.

    Let me know if you'd like more information about igneous rocks!

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