Igneous Rock: Intrusive & Extrusive.

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Presentation transcript:

Igneous Rock: Intrusive & Extrusive

Igneous Born of fire, rocks relating to volcanic processes

A Variety of Types- All Igneous

Observations Obsidian Diorite

Obsidian Diorite Black Many colors and crystals Smooth Rough Glassy Sharp Many colors and crystals Rough Opaque

Obsidian Diorite Extrusive Intrusive Extruded- Forced out Think: Intrusions!

Extrusive Extrusive Extrusive Intrusive Intrusive

Extrusive Cools: Quickly! Intrusive Cools: Slowly...

Extrusive Intrusive Large Grained- Cools Fast! Cools Slowly... Fine Grained- No time for big crystals to form Large Grained- Time for big crystals to form

x 7 Andesite Obsidian Granite Basalt Pumice Rhyolite Diorite Rocks: Observations: __________ Draw I think this is extrusive/intrusive (pick one) x 7 Rocks: Andesite Obsidian Granite Basalt Pumice Rhyolite Diorite

obs on each rock what’s intr/extr?

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