Sedimentary Rocks: Made through compaction and cementation, "Friable" grains come off easily, Horizontal layers, May contain fossils, Examples: Limestone, Sandstone, Conglomerate, Made from sediments and grains, Igneous Rocks: Made from molten rock (magma or lava), Extrusive rock has small or no crystals, Intrusive rock has large crystals, Interlocking grains, Described as mafic (dark-coloured) or felsic (light-coloured), Examples: Granite, pumice, basalt, Metamorphic Rocks: heat and pressure, layered with crystals or grains, made from other rocks, split into sheets, Examples: Marble, Slate, Gneiss, Folding in layers,

Rock Types

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