Thrust Fault

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thrust fault

[′thrəst ‚fȯlt]
(geology)
A low-angle (less than a 45° dip) fault along which the hanging wall has moved up relative to the footwall. Also known as reverse fault; reverse slip fault; thrust slip fault.

Thrust Fault

 

(geology), a form of displacement of bedding that arises in tectonic movements. The thrust fault forms when certain masses of rock are thrust over others along the dip plane of a fault in the earth’s crust. Thrust faults are subdivided into low-angle and high-angle thrust faults, depending on the angle of dip of this plane. They are frequently a further development of recumbent folds, the inverted limb of which is extended and pinched. In some cases, thrust faults are observed with virtually horizontal displacement surfaces and large displacements of the overthrust masses.