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ch. 4 rock cycle

TermDefinition
rock cycle The process by which new rock forms from old rock material is called the rock cycle.
rock A naturally occurring solid mixture of one or more minerals and organic matter.
erosion The process by which sediment is removed from its source is called erosion.
deposition The process in which sediment moved by erosion is dropped and comes to rest is called deposition .
composition The minerals a rock contains determine the composition of that rock.
texture The size, shape, and positions of the grains that make up a rock determine a rock's texture.
uplift The rising of regions of the earths crust to higher elevations.
intrusive igneous rock When magma intrudes or pushes into surrounding rock below the Earths's surface and cools the rock that forms is called Intrusive igneous rock.
extrusive igneous rock Igneous rock that forms from magma that erupts or extrudes onto the Earth's surface is call intrusive extrusive igneous rock.
magama magma is like lava but its deep within the Earth's crust
mafic rock A mafic rock is dark colored and are rich in calcium iron and magnesium and they are poor in silicon.
dikes Sheet like intrusions that cut across previous rock units are called dikes.
plutons Are large irregular shaped instructive bodies.
batholiths The largest of all igneous intrusions are batholiths.
sills They are sheet like intrusions tgat are oriented parallell to previous rock units.
lava flow When lava erupts from a volcano it flows.
strata Layers of rock.
stratification The process on which sedimentary rocks are layered.
organic sedimentary rock Forms the remains of once living plants or animals.
fossiliferous limestone When animal remains become cemented together.
ripple marks Record the motion in sand dunes.
mud cracks Fined grain sediments at the bottom of muddy shallow bodies of water.
foliated The texture of metamorphic rock in which the mineral grains are arranged in planes or bands.
nonfoliated The texture of metamorphic rock in which the mineral grains are not arranged in planes or bands.
deformation A change in a rock caused by force placed on it.
metamorphism When rocks changed shape and size.
contract meta Occurs near igneous intrusions
regional meta When the Earth's crust collides with eachother
index minerals Minerals used to estimate the temperature, depth, and pressure at which rock undergoes metamorphism
recrystallization Change in the size or the mineral may change in composition.
Created by: TRAE31
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