Coach Williams Room 310B. Igneous Rocks What are Igneous Rocks.
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Transcript of Coach Williams Room 310B. Igneous Rocks What are Igneous Rocks.
![Page 1: Coach Williams Room 310B. Igneous Rocks What are Igneous Rocks.](https://reader036.fdocuments.us/reader036/viewer/2022062407/56649e375503460f94b278e0/html5/thumbnails/1.jpg)
Earth ScienceCoach Williams
Room 310B
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Igneous Rocks
Chapter 5
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What are Igneous Rocks
5.1
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Crystallized magma “Ignis” = fire Lava- magma flowing onto surface
Igneous Rocks
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Extrusive◦ Cool quickly, fine-grained, on surface
Intrusive◦ Cool slowly, coarse-grained, beneath surface
Types of Igneous Rocks
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Identify: Igneous Rocks
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Slushy mix of molten rock, gases, minerals SiO2 most abundant 800 – 1200°F to melt rocks Factors that affect magma
◦ Temperature- deeper = hotter◦ Pressure- deeper = more pressure◦ Water- affects melting point◦ Minerals- affects melting point
Magma
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http://geology.com/rocks/igneous-rocks.shtml
Pictures of Igneous Rocks
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Partial Melting◦ Different substances, different melting points◦ Rock parts melt at different temperatures
Fractional Crystallization◦ Magma cools and crystallizes◦ Rock parts crystallize at different temperatures
How Rocks Melt
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Relationship: cooling magma/mineral formation
Bowen’s Reaction Series