Igneous Rock: Igneous, forms when magma cools, granite, obsidian, fine grained crystals, course grained crystals, intrusive, extrusive, melting, volcanoes, Sedimentary Rock: Sedimentary, forms after weathering and erosion, compaction , cementation, fossils, limestone, breccia, conglomerate, pieces of visible rock, Metamorphic Rocks: Metamorphic, ribbon or banded appearance, form under heat and pressure, marble, slate, gneiss, used in statues and building, uplift will bring to the surface, means change,

Rock Types

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