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Ground Deformation: Faulting and Folding Earthquakes and Mountain- Building

Ground Deformation: Faulting and Folding Earthquakes and Mountain- Building. An Earthquake is a rapid vibration of the Earth’s surface created by a sudden movement of a part of a plate along a fault. Energy released radiates in all directions from its source, the focus.

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Ground Deformation: Faulting and Folding Earthquakes and Mountain- Building

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  1. Ground Deformation: Faulting and FoldingEarthquakes and Mountain- Building

  2. An Earthquake is a rapid vibration of the Earth’s surface created by a sudden movement of a part of a plate along a fault.

  3. Energy released radiates in all directions from its source, the focus

  4. Energy propagates in the form of seismic waves

  5. L Waves S Waves

  6. Sensitive instruments around the world record the event

  7. Seismograph

  8. What is a Fault or Fault line?

  9. A Fault is a fracture in rock along which displacement has taken place- associated with a plate boundary.Faults can be active or inactive, and can be associated with either current or old plate boundaries.

  10. Types of Faults

  11. Normal

  12. Reverse

  13. Strike-slip

  14. What causes an Earthquake??

  15. Focus- The location within the Earth where movement occurs, and an Earthquake originates.Epicenter- The location on the surface directly above the focus of an earthquake.

  16. Where do Earthquakes occur?

  17. So, how does energy released by slippage at a fault travel through the ground?

  18. Energy from an Earthquake travels in seismic waves.

  19. S-Wave Motion – “Side-to-Side” Motion

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