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Rocks (Igneous (Made from magma/lava, Many of them are hard and dense, The…
Rocks
Igneous
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They are classified according to their origin, texture, and mineral composition
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Metamorphic
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Geologists classify metamorphic rocks according to the arrangement of the grains that make up the rocks
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Metamorphic rocks that have their grains arranged in parallel layers or bands are said to be foliated
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Sedimentary
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clastic rocks, organic rocks, and chemical rocks are 3 major groups of sedimentary rocks
Most sedimentary rocks are formed through a series of processes: erosion, deposition, compaction, and cementation
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Cementation is the process in which dissolved minerals crystallize and glue particles of sediment together
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