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Folding and Faulting

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Folding and Faulting Chapter 4, Sec. 4 Stress Amount of force per area put on an object Rocks can change shape due to stress Three types of stress: Compression ... – PowerPoint PPT presentation

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Title: Folding and Faulting


1
Folding and Faulting
  • Chapter 4, Sec. 4

2
Stress
  • Amount of force per area put on an object

3
Rocks can change shape due to stress
4
Three types of stress
  • Compression
  • Tension
  • Shear

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FOLDING
  • Rock layers bend due to stress
  • Assume most rocks are laid down horizontal

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FAULTS
  • The line along which rocks break and move

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Normal Faults
  • Caused by tension forces
  • Hanging wall moves down

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Reverse Faults
  • Caused by compression forces
  • Hanging wall moves up

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Strike-slip Faults
  • Opposing forces cause rock to break
  • Move horizontally

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