IGNEOUS ROCKS
SEDIMENTARY ROCKS
METAMORPHIC ROCKS
100
Rocks formed from the crystallization of magma
Igneous rocks
100
Pieces of solid material that have been deposited on Earth's surface by wind, water, ice, gravity, or chemical precipitation
Sediments
100
When molten rocks come in contact with solid rock
Contact metamorphism
200
Magma that flows out onto Earth's surface
Lava
200
The physical and chemical process that transforms sediments into sedimentary rocks
Lithification
200
When very hot water reacts with rock and alters its chemistry
Hydrothermal metamorphism
300
Fine-grained igneous rock that cool quickly on Earth's surface
Extrusive igneous rocks
300
When mineral growth cements sediment grains together into solid rock
Cementation
300
Wavy layers and bands of minerals
Foliated
400
Coarse-grained igneous rocks that cool slowly beneath Earth's surface
Intrusive igneous rocks
400
Sedimentary rocks that where formed from the remains of once-living things
Organic sedimentary rocks
400
Metamorphic rock that lacks mineral grains with long axes in one direction
Nonfoliated
500
The process in which different minerals form at different temperatures
Fractional Crystallization
500
The percentage of open spaces between grains in rocks
Porosity
500
When high temperatures and pressure affect large regions
Regional metamorphism
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