The rock cycle describes the continuous process of transformation between three main types of rocks: igneous, metamorphic, and sedimentary. Here are examples of each:
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Igneous Rock: Granite - This rock forms from the slow crystallization of magma beneath the Earth's surface. It is often characterized by its coarse-grained texture and is commonly used in construction and monuments.
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Sedimentary Rock: Limestone - This rock is primarily composed of calcium carbonate and forms from the accumulation of organic materials, such as shells and coral, or through chemical precipitation. It is often found in marine environments and is used in cement and as a building stone.
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Metamorphic Rock: Schist - This rock forms from the alteration of existing rocks (either igneous, sedimentary, or other metamorphic rocks) under high pressure and temperature conditions. Schist is characterized by its foliated structure, which means it has a layered appearance due to the alignment of mineral grains.
These three types of rocks continuously interact in the rock cycle through processes such as melting, erosion, sedimentation, and metamorphism.