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10 Cards in this Set

  • Front
  • Back
What are faults?
They are surfaces on which rocks move when their elastic limit is passed and they break.
What is an earthquake?
Vibrations produces when rocks along a fault break because the force on them is great enough.
What is compression?
It is the force that squeezes rocks together.
What is tension?
It is the force that pulls rocks apart.
What is shear?
It is the force that causes plates to move sideways past each other.
What kinds of faults are caused by tensional forces?
Normal faults are caused by tensional forces.
Describe a normal fault.
Rock above the fult surface moves downward in relation to rock below the fault surface.
What kinds of faults are caused by cimpressional forces?
Reverse faults are caused by compressional forces.
What kinds of faults are caused by shear forces?
Strike-slip faults are caused by shear forces.
Describe a reverse fault.
Rocks on either side of the fault surface move past each other.