Igneous Rock

Jul 18, 2014

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Igneous Rock. (from fire). Extrusive: Volcanic glass (Obsidian). Extrusive: Basalt ( o cean floor; ridges). Extrusive: Pumice (volcanic explosions). Intrusive : Granite (course crystals). Intrusive: Dykes. Metamorphic. Changed Rock. Metamorphic : Gneiss (Compressed Granite).

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Igneous Rock

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