Sedimentary Rocks: May contain fossils, Formed when small rock particles are deposited, compacted and cemented together, Sandstone , Often have visible layers, Limestone, Shale, Formation involves a body of water, Formation involves weathering/erosion and transportation of rock particles, Igneous Rocks: Formed when molten rock cools and solidifies, Basalt, Contain interlocking crystals, Crystal size depends on how fast the rock cooled, Obsidian, Granite, Formation involves volcanoes, Can be extrusive or intrusive,

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