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.

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 It might be outdated or ideologically biased.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.

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References in periodicals archive

This sample taken from a thrust fault zone and contraction of fault zone caused developed the oblate shape of strain ellipsoid.

CONSTRAINING OF STRAIN ELLIPSOID SHAPE FROM SECTIONAL DATA IN THE AU BEARING SHEAR ZONE WEST OF IRAN

The largest compressions in the region were observed in the VAAN-MURA-OZAL triangle, which indicates that the thrust faults are active.

Analysis of October 23 (Mw 7.2) and November 9 (Mw 5.6), 2011 Van Earthquakes Using Long-Term GNSS Time Series

Thrust faults: AT = Athens; LOT = Liberty-Orrington; MLT = Messalonskee Lake.

Provenance and paleogeography of post-Middle Ordovician, pre-Devonian sedimentary basins on the Gander composite terrane, eastern and east-central Maine: implications for Silurian tectonics in the northern Appalachians

Wang, "Trenching exposures of the surface rupture of 2008 Mw 7.9 Wenchuan earthquake, China: implications for coseismic deformation and paleoseismology along the Central Longmen Shan thrust fault," Journal of Asian Earth Sciences, vol.

Estimation of recurrence interval of large earthquakes on the central Longmen Shan fault zone based on seismic moment accumulation/release model

When an earthquake occurs at a thrust fault, the plate on top snaps upward.

How did this happen? Scientists try to unravel what caused the devastating tsunami last December

An example of a thrust fault is the fault in which the Northridge earthquake occurred.

Finding faults: grades 7-12. (Scientific Noations)

This is a thrust fault. Can you see how one section of land can override another?

Challenge

Instead, stresses are displaced onto lesser-known faults - the Elysian Park near downtown Los Angeles, the Whittier, the Sierra Madre, the Oak Ridge, and the still unnamed thrust fault that caused the Northridge earthquake of January 1994.

It's our fault

In this area, the Kootenay Formation coal seams are targeted in two structural zones which include a western thrust fault and an anticline feature.

Atrum Coal Ltd - Initial Drilling Results at South East Corner of Elan South

A paper in Nature Geoscience (see accompanying article) takes another look at these shallow moonquakes and establishes connections to some very young surface features called lobate thrust fault scarps.

A New Wrinftla on tha Moon