For%20geologists,%20faults%20are%20among%20the%20most%20common%20and%20obvious%20features%20on%20this%20and%20other%20planets%20(if%20any%20of%20you%20one%20day%20decide%20to%20learn%20more%20about%20geology,%20you%20will%20see%20a%20few!).

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For geologists, faults are among the most common
and obvious features on this and other planets
(if any of you one day decide to learn more about
geology, you will see a few!).
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Faults must be identified on the surface, must be
mapped in detail and reconstructed at depth
because FAULTS ALLOW GEOLOGISTS TO SOLVE THE
GEOLOGICAL PUZZLE HOW DID THESE ROCKS GET HERE??
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FAULTS ARE SURFACES OF CONCENTRATED MOVEMENT
BETWEEN TWO BLOCKS
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There is a lot of energy released at each
earthquake. The BIGGER the earthquake, the BIGGER
is the deformation that can be observed in the
area surrounding the fault. The displacement on
this fault after this earthquake was about 3
meters.
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A vertical cross-section (slice through the
Earth) across the bump in the previous slide
would display something like this
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HOW CAN A MOUNTAIN RANGE GROW FROM SUCH A SMALL
THING?
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FAULTS ARE DANGEROUS!

• We dont want to build new cities close to
  active faults

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FAULTS ARE IMPORTANT TO OIL COMPANIES
For every slip on the fault surface the rock
volume surrounding the fault will break in many
fractures

• Fractures increase the potential for larger
  volumes of oil to flow to the surface
• Oil wells will be more productive when they
  intersect an intensely fractured rock mass

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BACK TO EVERYDAY LIFE!