Rock (geology) - Wikipedia Rocks form the Earth's outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere The study of rocks involves multiple subdisciplines of geology, including petrology and mineralogy
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Rocks - Geology (U. S. National Park Service) Rocks are made up of different minerals, broken pieces of crystals, or broken pieces of rocks Some rocks are made of the shells of once-living animals, or of compressed pieces of plants
Types of Rocks: Igneous, Sedimentary, Metamorphic - Geology In Rocks are naturally occurring solid aggregates of minerals or mineraloids They are classified into three main types based on their formation processes: igneous, sedimentary, and metamorphic rocks Rocks continually change from one form to another through the rock cycle, involving processes such as weathering, melting, and metamorphism
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