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Ch.5 Vocab

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granite
generally light- colored rock that has high silica content
rock-forming mineral
one of the common minerals that make up most of the rocks of Earth's crust
basalt
dark colored-rock, low silica content
grains
particles of minerals or other rocks
texture
look and feel of rock's surface
igneous rock
forms from cooling of magma or lava
sedimentary rock
forms when particles of other rocks or the remains of plants and animals are pressed and cemented together
metamorphic rock
forms when existing rock is changed by heat, pressure, or chemical reactions
extrusive rock
igneous rock formed from lava that erupted into earth's surface
intrusive rock
igneous rock that formed when magma hardened beneath earth's surface
sediment
small, solid pieces of material that come from rocks or living things
erosion
running water, wind, or ice loosen and carry away fragments of rock
deposition
process by which sediment settles out of the water or wind carrying it
compaction
process that presses sediments together
cementation
process in which dissolved minerals crystallize and glue particles of sediments together
clastic rock
sedimentary rock that forms when rock fragments are squeezed together
organic rock
forms where the remains of plants and animals are deposited in thick layers
chemical rock
forms when minerals that are dissolved in a solution crystallize
coral reef
structure formed from skeletons
foliated
mettamorphic rocks that have their grains arranged in parallel layers of bands
nonfoliated
mineral grains in rocks arranged randomly
rock cycle
series of proccesses on earth's surface and in the crust and mantle that slowly change rocks from one another