How are rocks formed?

Rocks are so common that most of us take for granted—cursing when we hit them while gardening or trip over them. But have you ever wondered how they are formed? There are three main types of rocks: sedimentary, igneous, and metamorphic. These rocks are formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle.

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How are rocks formed?
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    How Are Metamorphic Rocks Formed?

    How Are Metamorphic Rocks Formed?

    Metamorphic rocks are rocks that have changed from one type of rock to another. While sedimentary rock is formed from sediments, and igneous rock is …

    Rock Specimens

    Rock Landformations

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