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Fault terminology:
- Strike
- the azimuthal direction of the line of intersection
of a horizontal plane with the fault plane
- Trace
- the line marking the intersection of the fault plane with the
surface of the Earth evident only when the fault reaches the Earth's
surface
- Dip
- the angle that a fault plane makes with a horizontal plane
measured downward from horizontal
- Throw
- the amount of vertical displacement between like
geological units on opposing sides of a fault
- Foot wall
- the lower wall of an inclined fault
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- Hanging wall
- the upper wall of an inclined fault
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- Rake
- the declination from horizontal of the direction of slip on a fault
- Slip
- the amount of displacement on a fault during an earthquake
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