Download - Chapter 6 – Earthquakes
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Chapter 6 – EarthquakesSection 1: Forces in Earth’s Crust
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Types of Stress
Stress & plate boundaries
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Types of Stress
What type of landform results from tension?valley
What type of landform results from compression?mountain
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Silly PuttyStress
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Silly PuttyWhich part of this activity models
the type of stress that would produce anticlines and synclines?
When we pushed the ends together – compression
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Folding Earth’s Crust
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Folding Earth’s Crust
Who can point out an anticline?Where is a syncline in this picture?
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How can I tell the difference among the three types of faults?
Normal fault
Tension
Hanging wall moves down
Reverse fault
Compression
Hanging wall moves up
Strike-Slip fault
Shearing
Movement is side-to-side w/ very little up/down
Do hand models here.
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Types of Faults What type of fault is
this?Normal faultWhat stress causes
this?tensionWhich wall moves –
the hanging wall or the footwall?
The hanging wallIn what direction?down.
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Types of Faults
What type of fault is this?
reverse faultWhat stress causes
this?compressionWhich wall moves –
the hanging wall or the footwall?
The hanging wallIn what direction?Up and over the
footwall
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Types of Faults
What type of fault is this?
Strike-slip faultWhat stress causes
this?shearingHow is this fault
different from the other two?
Rocks slip past each other with very little up/down movement.
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Fault Block Mountains
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