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The vertical amount of fault motion; the elevation difference between two points offset by the fault. The horizontal amount of fault motion perpendicular to the strike of the fault.

Slip, heave, throw In measuring the horizontal or vertical separation, the throw of the fault is the vertical component of the separation and the heave of the fault is the horizontal component, as in "Throw up and heave out".

Reverse faults occur when one plate slides under the other, creating a vertical offset. Strike-slip faults happen when two plates move horizontally past each other.

1. n. [Geology] The horizontal displacement between points on either side of a fault, which can range from millimeters to kilometers. Perhaps the most readily visible examples of offset are features such as fences or roads that have been displaced by strike-slip faults, such as the San Andreas fault of California, USA.

The dip-slip component can be further broken down into horizontal and vertical components, called heave and throw. The throw represents the entire vertical component of motion across a fault plane; the total horizontal component is the sum of the heave and strike-slip components.