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Glossary of Rockin Definitions

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igneous rock that forms when lava cools and solidifies on the Earth's surface
extrusive rock
the texture of metamorphic rock in which mineral grains are aligned
foliated
rock that forms when magma or lava cools and solidifies
igneous rock
igneous rock that forms when magma cools and solidifies beneath the Earth's surface
intrusive rock
hot liquid that forms when rock partially or completely melts
magma
rock that forms when the texture and composition of a preexisting rock change due to heat or pressure
metamorphic rock
the texture of metamorphic rock in which mineral grains show no alignment
nonfoliated
the process by which one trock type changes into another rock type
rock cycle
rock that forms when sediments are pressed and cemented together
sedimentary rock
the layering of sedimentary rock
stratification
the sizes, shapes, and arrangement of particles or grains that make up a rock
texture
hot liquid that erupts onto the Earth's surface
lava
long cracks in the Earth's surface
fissures
the layers of sedimentary rock
strata
a solid mixture of crystals of one or more minerals
rock

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