32 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
Volcanic Activity
Magma/lava inside or outside of volcanoes
Deposition
the process of sediment settling
somewhere naturally (when sediment stops moving)
Crystals
solid materials whose atoms have an orderly, repeating pattern
ore
a mineral containing enough of a useful substance to be sold for profitto
sand
a large sediment
clay
a small sediment
coarse-grained
rocks that have large crystals, gritty texture
fine-grained
rocks that have small to no crystals
granite
an example of an intrusive igneous rock
pumice
an example of an extrusive igneous rock
hot fluids
this can also chemically change the composition of metamorphic rocks
marble
an example of a non-foliated metamorphic rock
gneiss
an example of a foliated metamorphic rock
origin
Igneous rocks can be classified by texture, composition or this...

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