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Ch. 5 Igneous Rocks

QuestionAnswer
formed from the crystallization of magma igneous rocks
fine-grained igneous rocks that cool quickly on Earth's surface extrusive
coarse-grained igneous rocks that cool slowly beneath Earth's surface intrusive
The four factors that affect magma formation temperature, pressure, water content, and mineral content
70 SiO2 content Rhyolitic
60 SiO2 content Andesitic
50 SiO2 content Basaltic
The process whereby some minerals melt at low temperatures while other minerals remain solid partial melting
The process wherein different minerals form at different temperatures fractional crystallization
This illustrates the relationship between cooling magma and mineral formation Bowen's reaction series
Rocks that are light-colored, high silica contents felsic
Rocks that are dark colored, low silica content mafic
Igneous rocks with low silica content and very high levels of magnesium and iron ultramafic
This texture has large, well-formed crystals surrounded by finer-grained crystals of the same mineral or different mineral porphyritic
vein deposits of extremely large-grained minerals that can contain rare ores such as lithium and beryllium pegmatites
Created by: ceadams00
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