Are related processes that break down all types of rock into small particles and then move the particles to a new location
Most sedimentary rocks are created after millions of years of compaction and cementation of loose sediments. Compaction occurs as loose sediments become tightly packed from drying or the weight of more layers of sediments on top.
Rocks are "changed" versions of igneous, sedimentary, and other metamorphic rocks,. Then changes occur when the rocks are exposed to great amounts of heat and pressure, such as when molten rock intrudes into existing rock layers
Igneous rocks form when magma or lava cools. We are familiar with this process in films about spectacular volcanic eruptions
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