The video tutorial introduces metamorphic rocks, explaining their origins from sedimentary, igneous, or other metamorphic rocks. It describes the process of metamorphism, which involves reshaping rocks under extreme conditions deep within the Earth, such as high pressure and temperature. The tutorial also covers how rocks can transform without melting and lists common types of metamorphic rocks like quartzite and marble. It emphasizes the variety of metamorphic rocks and their formation deep underground.

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