26 terms

ROCKS

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metamorphic rock
A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions.
sedimentary rock
Rock formed when layers of sediment settle and are compacted and cemented together
igneous rock
Rock that forms when magma cools and solidifies
intrusive
cooling takes place slowly beneath earths surface.
extrusive
igneous rock that forms when magma cools quickly at or near Earth's surface
crystallization
The process of forming crystals when lava or magma cool.
heat and pressure
the two processes in the formation of metamorphic rock
compaction
the process that presses sediments together
cementation
Process in which dissolved minerals crystallize and glue particles of sediment together.
weathering
the process by which rocks are broken down into smaller pieces naturally (wind, water, ice)
erosion
Process by which weathered rock and soil are moved from one place to another.
deposition
the process of sediment settling
somewhere naturally (when sediment stops moving)
foliated
a layered or banded appearance that is produced by exposure to heat and directed pressure
non-foliated
rocks do not have distinct bands or layers
organic / / bioclastic / biochemical sedimentary rock
Sedimentary rock that forms from the remains of plants or animals (remains of living things)
clastic sedimentary rock
rock or sediments made up primarily of broken fragments of pre-existing rocks or minerals
chemical sedimentary rock
is formed when dissolved mineral precipitate from water
Sediment
pieces or fragments of rock
Metamorphic rock
a pre-existing rock that is heated and pressurized to become a new rock
Volcanic Activity
Magma/lava inside or outside of volcanoes
Deposition
the process of sediment settling
somewhere naturally (when sediment stops moving)
Crystals
solod materials whose atoms have an orderly, repeating pattern
gem
a rare mineral that can be cut and polished
ore
a mineral containing enough of a useful substance to be sold for profitto
organic rock
formed out of once-living matter
fissure
a large crack in the earth's crust
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