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Ch 5

Vocab.

TermDefinition
lava magma that flows out onto Earth's surface
igneous rock form when lava or magma cools and minerals crystallize
partial melting the process whereby some minerals melt at relatively low temperatures while other minerals remain
Bowen's reaction series illustrates the relationship between cooling magma and the formation of minerals that make up igneous rock
fractional crystallization is similar to partial melting in that the composition of magma can change
intrusive rock has coarse grains (larger than 1 cm)
extrusive rock has fine grains they need magnification to see
basaltic rock dark-colored, low silica contents, and contain mostly plagioclase and pyroxene
granitic rock light-colored, high silica, contain mostly quartz and feldspar
texture refers to the size, shape, and distribution of the crystals or grains that make up a rock
porphyritic texture has different sizes of grains
vesicular texture has a spongy appearance
pegmatite large veins
kimberlite produce diamonds
Created by: selenamercado
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