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Faults

The different types of faults - including reverse, normal, thrust and strike-slip - are defined by how the two blocks of crust move relative to each other.

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Faults
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Vocabulary

dip

dip

The angle of a fault relative to horizontal.
dip-slip fault

dip-slip fault

A fault in which the dip of the fault plain is inclined relative to the horizontal.
fault

fault

A fracture along which one side has moved relative to the other.
joint

joint

A break in rock along which there is no movement.
normal fault

normal fault

A dip-slip fault in which the hanging wall drops down relative to the footwall.
reverse fault

reverse fault

A dip-slip fault in which the hanging wall pushes up relative to the footwall.
slip

slip

The distance rocks move along a fault.
strike-slip fault

strike-slip fault

A fault in which the dip of the fault plane is vertical.
thrust fault

thrust fault

A reverse fault in which the dip of the fault plane is nearly horizontal.

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