The Rock Cycle

1
The Rock Cycle

• Thinking about relationships among the major rock
  groups

2
Major Rock Groups

• Igneous
• Formed from a melt (molten rock)
• Plutonic (intrusive)slow cooling and
  crystallization
• Volcanic (extrusion) quick cooling at the
  surface
• Sedimentary
• Formed at the Earths surface
• Clastic (Mineral Fragments or grains, clays)
• Chemical (crystalline chemical/biochemical
  precipitates)
• Metamorphic
• Changed by pressure, temperature and fluids.

3
Fig. 2.9
MAGMA
4
IGNEOUS
Crystallization
MAGMA
5
IGNEOUS Plutonic
Crystallization
MAGMA
6
Volcanic IGNEOUS Plutonic
Crystallization
MAGMA
7
Weathering
Volcanic IGNEOUS Plutonic
Crystallization
MAGMA
Uplift
8
SEDIMENT
SEDIMENT
Weathering
Volcanic IGNEOUS Plutonic
Crystallization
MAGMA
Uplift
9
Erosion
SEDIMENT
Weathering
Transport
Deposition
Volcanic IGNEOUS Plutonic
SEDIMENTARY
Crystallization
MAGMA
Uplift
10
Erosion
SEDIMENT
Weathering
Transport
Deposition
Volcanic IGNEOUS Plutonic
SEDIMENTARY
Crystallization
MAGMA
Uplift
11
Erosion
SEDIMENT
Weathering
Transport
Deposition
Volcanic IGNEOUS Plutonic
SEDIMENTARY
Increased PT
METAMORPHIC
Crystallization
Burial
MAGMA
Uplift
12
Erosion
SEDIMENT
Weathering
Transport
Deposition
Volcanic IGNEOUS Plutonic
Can you see any shortcuts?
SEDIMENTARY
Increased PT
METAMORPHIC
Crystallization
Melting
Burial
MAGMA
Uplift
13
Erosion
SEDIMENT
Weathering
Transport
Deposition
Volcanic IGNEOUS Plutonic
SEDIMENTARY
Increased PT
METAMORPHIC
Crystallization
Melting
Burial
MAGMA
Uplift
14
In Conclusion

• The rock cycle demonstrates the relationships
  among the three major rock groups
• It is powered by the interior heat of the Earth
• As well as earths momentum and
• The energy from the sun
• It involves processes on the Earths surface as
  well as the Earths interior
• It connects the hydrologic cycle with the
  tectonic cycle.

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16
Erosion
SEDIMENT
Weathering
Transport
Deposition
Volcanic IGNEOUS Plutonic
SEDIMENTARY
Increased PT
METAMORPHIC
Crystallization
Melting
Burial
MAGMA
Uplift
17
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