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Igneous Rocks - Vocab

Across
Underground flow
Extrusive texture, Holes, cooled fast
Large crystals imbedded in a matrix of smaller crystals
Rocks form on Earth's surface
Upwelling hot mantle rocks melt when pressure is reduced
All crystals larger than 1cm, takes a long time cooling
The process of cooling and creating crystals
Process when a
Lacks iron & magnesium
The sinking of crystals because of their greater density
Slow cooling underground makes _____
Rocks formed from cooling of magma
Down
High in iron & magnesium
Surface flow
Extrusive texture, Explosive fragmentation of volcanic material
Relates to the temperature at which minerals crystallize when cooled, or melt when heated
Sinking of crystals because of their greater density
Inclusion of volatiles reduced melting temperature of rocks
The feel, appearance, or consistency of a surface
Equal amounts of dark and light minerals in a rock
Felsic. mafic, Intermediate, ultra-mafic
Rocks form from cooling of lava
Rocks form inside of the earth
Fast cooling on the surface makes _____
Extrusive texture, rapid cooling, conchoidal fracture