Igneous rocks
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Igneous Rocks. Igneous rocks. Are rocks formed from solidified/cooled magma Are made of interlocking crystals Interlocking crystals make strong rock resistant to weathering and erosion. Igneous rock formation. Igneous rocks.

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Igneous Rocks

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Igneous rocks

Igneous Rocks


Igneous rocks1

Igneous rocks

  • Are rocks formed from solidified/cooled magma

  • Are made of interlocking crystals

  • Interlocking crystals make strong rock resistant to weathering and erosion


Igneous rock formation

Igneous rock formation


Igneous rocks2

Igneous rocks

  • Contain silicateminerals; atoms of silicon and oxygen and other minerals


Igneous rocks3

Igneous rocks

  • Are identified by 1) color 2) crystal size


Intrusive igneous rock

Intrusive igneous rock

  • Is rock formed/cooled inside the earth’s crust

  • Cools slowly and forms larger crystals


Vietnam veterans memorial black granite

Vietnam veterans memorialblack granite


Extrusive igneous rock

Extrusive igneous rock

  • Rock that forms when lava cools

  • Cooling is faster so crystals form more quickly and are smaller


Obsidian

obsidian


Basalt

basalt


Igneous rock

Igneous Rock

  • http://videos.howstuffworks.com/hsw/8447-basics-of-geology-igneous-rock-video.htm

  • http://videos.howstuffworks.com/hsw/8447-basics-of-geology-igneous-rock-video.htm

  • http://videos.howstuffworks.com/hsw/10466-forces-that-shape-the-earth-igneous-rocks-video.htm

  • http://videos.howstuffworks.com/hsw/5929-geology-the-structure-of-the-earth-video.htm


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