1 average reservoir residence times reservoiraverage residence time antarctica20,000 years...
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Average reservoir residence times
Reservoir Average residence time
Antarctica 20,000 years
Oceans 3,200 years
Glaciers 20 to 100 years
Seasonal snow cover 2 to 6 months
Soil moisture 1 to 2 months
Groundwater: shallow 100 to 200 years
Groundwater: deep 10,000 years
Lakes 50 to 100 years
Rivers 2 to 6 months
Atmosphere 9 days
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The Rock CycleThinking about relationships among
the major rock groups
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VocabularyTypes of rocks:• Igneous• Metamorphic• Sedimentary
How rocks are changed:• Chemical weathering• Physical weathering• Metamorphism
Layers of the Earth:• Core• Mantle• Crust
Movement:• Convection• Earthquake• Subduction zone• Transform fault
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Layers of the Earth
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Plate Tectonics
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Convection
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Major Rock Groups
• Igneous– Formed from a melt (molten rock)–Plutonic (intrusive):slow cooling and
crystallization–Volcanic (extrusion): quick cooling at
the surface
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• Sedimentary– Formed at the Earth’s surface–Clastic (Mineral Fragments or
grains, clays)–Chemical (crystalline
chemical/biochemical precipitates)• Metamorphic
– Changed by pressure, temperature and fluids.
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Fig. 2.9
MAGMA
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MAGMA
Crystallization
IGNEOUS
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MAGMA
IGNEOUS
Plutonic
Crystallization
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MAGMA
Volcanic
IGNEOUS
Plutonic
Crystallization
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MAGMA
Volcanic
IGNEOUS
Plutonic
Uplift
Crystallization
Weathering
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MAGMA
Volcanic
IGNEOUS
Plutonic
SEDIMENT
Uplift
Crystallization
Weathering SEDIMENT
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MAGMA
Volcanic
IGNEOUS
Plutonic
SEDIMENT
SEDIMENTARY
Uplift
Crystallization
WeatheringErosion
Transport
Deposition
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MAGMA
Volcanic
IGNEOUS
Plutonic
SEDIMENT
SEDIMENTARY
Uplift
Crystallization
WeatheringErosion
Transport
Deposition
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MAGMA
Volcanic
IGNEOUS
Plutonic
SEDIMENT
SEDIMENTARY
METAMORPHIC
UpliftBurial
Increased P&T
Crystallization
WeatheringErosion
Transport
Deposition
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MAGMA
Volcanic
IGNEOUS
Plutonic
SEDIMENT
SEDIMENTARY
METAMORPHIC
UpliftBurial
Increased P&T
MeltingCrystallization
WeatheringErosion
Transport
DepositionCan you see
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MAGMA
Volcanic
IGNEOUS
Plutonic
SEDIMENT
SEDIMENTARY
METAMORPHIC
UpliftBurial
Increased P&T
MeltingCrystallization
WeatheringErosion
Transport
Deposition
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• 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 earth’s momentum and…
• The energy from the sun
• It involves processes on the Earth’s surface as well as the Earth’s interior
• It connects the “hydrologic cycle” with the “tectonic cycle”.
In Conclusion…
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MAGMA
Volcanic
IGNEOUS
Plutonic
SEDIMENT
SEDIMENTARY
METAMORPHIC
UpliftBurial
Increased P&T
MeltingCrystallization
WeatheringErosion
Transport
Deposition