- crystalline solids which form directly from the cooling of magma
- given names based on composition and texture (how big the crystals are)
Diorite
Felsite
Sedimentary Rock-called secondary rocks because they are the result of the accumulation of small pieces of broken off pre-existing rocks
- clastic: accumulation of small pieces of broken rock
- chemical: result of standing water evaporating, leaving dissolved minerals behind
- organic: accumulation of debris of organic matter
Shale
Sandstone
Metamorphic Rock
- any rock can become a metamorphic rock
- occurs when a rock is moved into an environment (usually buried) with different temperatures and pressures than its previous environment
Slate
Gneiss
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