Evolution of shear fabric in granular fault gouge from stable sliding to stick slip and implications for fault slip mode
Laboratory and theoretical studies provide insight into the mechanisms that control
earthquake nucleation, when fault slip velocity is slow (< 0.001 cm/s), and dynamic rupture …
earthquake nucleation, when fault slip velocity is slow (< 0.001 cm/s), and dynamic rupture …
The role of grain size and effective normal stress on localization and the frictional stability of simulated quartz gouge
JD Bedford, DR Faulkner - Geophysical Research Letters, 2021 - Wiley Online Library
For earthquakes to occur on tectonic faults deformation localizes onto discrete slip surfaces
within the gouge material of the fault core. Here, we investigate how localization is promoted …
within the gouge material of the fault core. Here, we investigate how localization is promoted …
Nanocrystalline principal slip zones and their role in controlling crustal fault rheology
Principal slip zones (PSZs) are narrow (< 10 cm) bands of localized shear deformation that
occur in the cores of upper-crustal fault zones where they accommodate the bulk of fault …
occur in the cores of upper-crustal fault zones where they accommodate the bulk of fault …
Influence of normal and shear stress on the hydraulic transmissivity of thin cracks in a tight quartz sandstone, a granite, and a shale
EH Rutter, J Mecklenburgh - Journal of Geophysical Research …, 2018 - Wiley Online Library
Transmissivity of fluids along fractures in rocks is reduced by increasing normal stress acting
across them, demonstrated here through gas flow experiments on Bowland shale, and oil …
across them, demonstrated here through gas flow experiments on Bowland shale, and oil …
Geophysical signatures of shear‐induced damage and frictional processes on rock joints
In this study, ultrasonic waves recorded during direct shear experiments on rock joints were
employed to investigate the shear failure processes. Three types of wave attributes were …
employed to investigate the shear failure processes. Three types of wave attributes were …
Frictional heating processes and energy budget during laboratory earthquakes
During an earthquake, part of the released elastic strain energy is dissipated within the slip
zone by frictional and fracturing processes, the rest being radiated away via elastic waves …
zone by frictional and fracturing processes, the rest being radiated away via elastic waves …
Geological records of coseismic shear localization along the Yangsan Fault, Korea
We conducted outcrop‐to‐nanoscale structural observations on a principal slip zone (PSZ)
of the Yangsan fault, a major strike‐slip fault in southeast Korea, and some high‐velocity …
of the Yangsan fault, a major strike‐slip fault in southeast Korea, and some high‐velocity …
Nanometric flow and earthquake instability
Fault zones accommodate relative motion between tectonic blocks and control earthquake
nucleation. Nanocrystalline fault rocks are ubiquitous in “principal slip zones” indicating that …
nucleation. Nanocrystalline fault rocks are ubiquitous in “principal slip zones” indicating that …
Time‐lapse record of an earthquake in the dry felsic lower continental crust preserved in a pseudotachylyte‐bearing fault
NS Mancktelow, A Camacho… - Journal of Geophysical …, 2022 - Wiley Online Library
The mechanisms of earthquake rupture in lower continental crust, below the usual frictional‐
viscous transition, remain uncertain. In addressing this problem, the study of …
viscous transition, remain uncertain. In addressing this problem, the study of …
Cross-Diffusion Waves as a trigger for multiscale, multiphysics Instabilities: Application to earthquakes
Theoretical approaches to earthquake instabilities propose shear-dominated instabilities as
a source mechanism. Here we take a fresh look at the role of possible volumetric instabilities …
a source mechanism. Here we take a fresh look at the role of possible volumetric instabilities …