Fault gouge forms in near-surface fault zones with brittle deformation mechanisms. There are several properties of fault gouge that influence its strength including composition, water content, thickness, temperature, and the strain rate conditions of the fault.

In fault …fine-grained, claylike substance known as fault gouge; when the crushed rock is relatively coarse-grained, it is referred to as fault breccia. Occasionally, the beds adjacent to the fault plane fold or bend as they resist slippage because of friction.

Fault gouge refers to small groups of sediments formed as a result of tectonic processes rather than sedimentary processes. It can exhibit plasmic fabric, including foliation and shears, and is studied to understand fault permeability and tectonic stability. AI generated definition based on: Sedimentary Geology, 2011

This page outlines fault gouge classification, the deformation processes by which it is generated (wear and cataclasis) and it's implications for faulting and fault strength.

2022年1月17日 · We identify a combination of weakening effects, including smearing of the weak clay; differential compaction of the two gouges redistributing normal stress; and shear localization producing...

2024年11月1日 · Understanding the control mechanism of fault rock particle size in fluid-induced fault slip and rupture processes is crucial for mitigating the seismic risks associated with large-scale fluid injection.

2007年10月5日 · The simulated fault gouge zones experience two distinct stages of evolution, i.e., fast growth and slow growth, distinguished by a switch in deformation mechanism from dominantly wear of the fault blocks to dominantly shearing of existing fault gouge.

Gouge is restricted to shear fractures and larger slip planes within the natural fault zones, whereas cataclastic sandstone usually pervades the fault zone. Grain size and sorting of gouge decrease as a function of increasing confining pressure and increasing displacement along a …

2022年12月8日 · The studied material, fault gouge, is usually characterized by (a) angular fragments, products of previous ultra-cataclastic flow inside the fault core and (b) a dense structure due to the high effective stresses. These two …

2009年5月19日 · We report on laboratory experiments designed to measure the strength, friction constitutive properties, and permeability of a suite of saturated clay-rich fault gouges, including: a 50:50% mixture of montmorillonite-quartz, powdered illite shale, and powdered chlorite schist.