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vocab page 145
chapter 6 vocab
16
Science
11th Grade
01/30/2013

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Term
Rock cycle.
Definition
the series of processes in which rock forms, changes from one type to another, is destroyed and forms again by geological processes.
Term
Bowen's reaction series.
Definition
the simplified pattern that illustrates the order in which minerals crystallize from cooling magma according to their chemical composition and melting point.
Term
igneous rock.
Definition
rock that forms when magma cools and solidifies.
Term
intrusive igneous rock.
Definition
rock formed from the cooling and solidification of magma Earth's surface.
Term
Extrusive igneous rock.
Definition
rock that forms from the cooling and solidification of lava at Earth's surface.
Term
felsic.
Definition
describes magma or igneous rock that is rich in feldspar and silica that is generally light in color.
Term
mafic.
Definition
describes magma or igneous rock that is rich in magnesium and iron and that is generally dark in color.
Term
compaction.
Definition
the process in which the volume and porosity of a sediment is decreased by the weight of overlying sediments as a result of burial beneath other sediment.
Term
cementation.
Definition
the process in which minerals precipitate into pore spaces between sediment grains and bind sediments together to form rock.
Term
chemical sedimentary rock.
Definition
sedimentary rock that forms when minerals precipitate from a solution or settle from a suspension.
Term
organic sedimentary rock.
Definition
sedimentary rock that forms the remains o plants or animals.
Term
clastic.
Definition
sedimentary rock that forms when fragments of preexisting rocks are compacted or cemented together.
Term
contact metamorphism.
Definition
a change in the texture, structure, or chemical composition of a rock due to contact with magma.
Term
Regional metamorphism.
Definition
a change in the texture, or chemical composition of a rock due to changes in temperature and pressure over a large area, generally as a result of tectonic forces.
Term
Foliation.
Definition
the metamorphic rock texture in which mineral grains are arranged in planes or bands.
Term
Nonfoliated.
Definition
the metamorphic rock texture in which grains are not arranged in planes or bands.
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