Rocks and The Rock Cycle

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Rocks and The Rock Cycle
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3 Main Rock Types
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3 Main Rock Types
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Igneous
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Igneous
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IGNEOUS---Extrusive Little or NO Crystals!
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IGNEOUS---Extrusive Little or NO Crystals!
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IGNEOUS---Extrusive Little or NO Crystals!
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IGNEOUS---ExtrusiveLittle or NO Crystals!
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Igneous
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IGNEOUS---IntrusiveLarge Interlocking Crystals!!!
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IGNEOUS---Intrusive Large Interlocking Crystals!
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IGNEOUS---Intrusive Large Interlocking Crystals!
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IGNEOUS---Intrusive Large Interlocking Crystals!
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3 Main Rock Types
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How to make a clasticsedimentary rock
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Sedimentary
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(No Transcript)
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3 Main Rock Types
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Metamorphic rocks form from HEATPRESSURE
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Contact Metamorphism

• Deep underground, zones of metamorphism form
  around the hot magma of batholiths.
• L.Gardiner/Windows Original

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Regional Metamorphism

• Tectonic forces smash continents together. The
  rocks get heated and become semi-molten. The
  added pressure causes the mineral to separate
  into bands and sometime to even flow before
  cooling again!

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How are Metamorphic rocks formed?
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Common Metamorphic Rocks
Parent Rock Metamorphic Rock
Granite Gneiss
Shale Slate
Sandstone Quartzite

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Foliated - vs. - Non Foliated

• Foliated These types of metamorphic rock are
  distinctly layered.
• This is due to the immense directional pressure
  that the rock is exposed to.

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Foliated Examples
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Foliated - vs. - Non-Foliated

• Non-Foliated
• As opposed to the foliated metamorphic rocks, the
  non-foliated rocks are not distinctly layered.   
  
• This is probably because non-foliated rocks were
  exposed to high temperature conditions, but not
  to high directional pressure conditions.  

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Non Foliated Examples
Marble from Limestone
Quartzite from Sandstone
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The Rock Cycle