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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.