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rock
solid mass of geological material
3 types of rock
igneous, sedimentary, metamorphic
igneous rock
formed from cooling/solidification of melted rock.
sedimentary rock
made when sediment accumulates and becomes rock
metamorphic rock
existing rock altered by heat, pressure, and or chemical reactions
weathering
breaks rock down
erosion
moves the broken material
deposition
sediment gets dropped somewhere
lithifications’ 2 processes
compaction & cementation
compaction
sediment gets squeezed by the weight of material above it
cementation
minerals precipitate from groundwater & glue sediment grains together
metamorphism
an existing rock changes because of heat, pressure and/or chemical fluids