Comparisons of

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Comparisons of
Small and Large Faults
Presentation by Mary DAngelo, Chad Ervin, Woody
Meadows, and Colin Whited Geologist Dr. Michele
Cooke
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Why are some faults larger than the others?
- Brittle/Ductile - Magnitude of Earthquakes -
Direction of extension or compression - Age (The
bigger, the older) - Pressure (Amount/Strength)
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How to tell the difference between a small and
large fault
- The larger the fault the larger the landmass
damage (brittle/ductile/flexibility) - Location
of corresponding bedrock layers -Larger and
Smaller faults EXAMPLE Wasatch Fault
(rate of increase 4 inches per year) -Clear
fault indication means it is a young fault -Older
faults tend to have multiple cracks/breakage
bedrock layers are difficult to tell apart
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How small faults become large faults

• Small faults increase in size due to seismic
  activity
• Extension Compression
• Length of slip
• - Focus point of stress/breakage

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• Where will we drill for oil in Moab?
• Near the Moab Fault
• Examples are as follows

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Where two layers of bedrock meet
In a fold on top of water
In a fault, specifically the footwall