Igneous Rocks

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Igneous Rocks
By Annamarie Cao Date 10-16-2008
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• Igneous rocks are one of the three major rock
  types and are basically rocks that solidified
  from magma.

• Magma is the term for liquid or melted rock and
  is usually quite hot.

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There are two types of igneous rocks called
extrusive (because it extruded or came out of the
Earth) and intrusive (because it intruded and
stayed inside the Earth).
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PLUTONIC - Intrusive igneous rocks
PLUTONIC - Intrusive igneous rocks

• Name Granite
• Chemistry Acidic
• Minerals Quartz, plagioclase, alkali feldspars
  and micas
• Color Generally light colors from white, pink to
  gray
• Texture Phaneritic to pegmatitic
• Origins Continental crusts and mountain belts

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