igneous rock: intrusive & extrusive. igneous born of fire, rocks relating to volcanic processes

Igneous Rock: Intrusive & Extrusive

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Igneous Rock:Intrusive &

Extrusive

Igneous•Born of fire, rocks relating to volcanic processes

A Variety of Types- All Igneous

Page 4: Igneous Rock: Intrusive & Extrusive. Igneous Born of fire, rocks relating to volcanic processes

Observations

Obsidian Diorite

Page 5: Igneous Rock: Intrusive & Extrusive. Igneous Born of fire, rocks relating to volcanic processes

•Black

•Smooth

•Glassy

•Sharp

Obsidian Diorite

•Many colors and crystals

•Rough

•Opaque

Page 6: Igneous Rock: Intrusive & Extrusive. Igneous Born of fire, rocks relating to volcanic processes

Obsidian Diorite

Extrusive

Intrusive

Extruded- Forced

out

Think: Intrusions

Page 8: Igneous Rock: Intrusive & Extrusive. Igneous Born of fire, rocks relating to volcanic processes

IntrusiveIntrusive

Extrusive Extrusive

Extrusive

Intrusive

Extrusive Cools:

Cools:

Quickly!

Slowly...

Extrusive

Intrusive

Cools Fast!

Cools Slowly...

Fine Grained- No time for big crystals to

form

Large Grained-

Time for big crystals to

form

Page 11: Igneous Rock: Intrusive & Extrusive. Igneous Born of fire, rocks relating to volcanic processes

Rock:______Observations: __________

I think this is extrusive/intrusive (pick one)Draw

x 7Rocks:

Andesite

Pumice DioriteRhyolite

GraniteBasalt

Obsidian

Page 12: Igneous Rock: Intrusive & Extrusive. Igneous Born of fire, rocks relating to volcanic processes

obs on each rockwhat’s intr/extr?

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