Investigating the onset of strain localization within anisotropic shale using digital volume correlation of time‐resolved X‐ray microtomography images

J McBeck, M Kobchenko, SA Hall… - Journal of …, 2018 - Wiley Online Library
Digital volume correlation analysis of time‐resolved X‐ray microtomography scans acquired
during in situ triaxial compression of Green River shale cores provided time series of 3‐D …

Fracture network localization preceding catastrophic failure in triaxial compression experiments on rocks

J McBeck, Y Ben-Zion, F Renard - Frontiers in Earth Science, 2021 - frontiersin.org
We quantify the spatial distribution of fracture networks throughout six in situ X-ray
tomography triaxial compression experiments on crystalline rocks at confining stresses of 5 …

[HTML][HTML] The competition between fracture nucleation, propagation, and coalescence in dry and water-saturated crystalline rock

JA McBeck, W Zhu, F Renard - Solid Earth, 2021 - se.copernicus.org
The continuum of behavior that emerges during fracture network development in crystalline
rock may be categorized into three end-member modes: fracture nucleation, isolated fracture …

Potential energy as metric for understanding stick–slip dynamics in sheared granular fault gouge: A coupled CFD–DEM study

O Dorostkar, J Carmeliet - Rock Mechanics and Rock Engineering, 2018 - Springer
We study the stick–slip behavior in a sheared granular fault gouge using a coupled discrete
element method and computational fluid dynamics. We compare characteristics of slip …

Microscale characterization of fracture growth and associated energy in granite and sandstone analogs: insights using the discrete element method

HB Vora, JK Morgan - Journal of Geophysical Research: Solid …, 2019 - Wiley Online Library
Abstract We employ the Discrete Element Method to analyze the micromechanical response
of numerical analogs of sandstone and granite to unstable failure. Calibrated particle‐based …

Strain Localization Patterns and Thrust Propagation in 3‐D Discrete Element Method (DEM) Models of Accretionary Wedges

EM del Castillo, B Ferdowsi, AM Rubin, B Schoene - Tectonics, 2023 - Wiley Online Library
High‐resolution three‐dimensional discrete element method (DEM) simulations of sandbox‐
scale models of accretionary wedges suggest thrusts follow a variety of propagation …

Deformation evolves from shear to extensile in rocks due to energy optimization

J McBeck, B Cordonnier, M Cooke… - … Earth & Environment, 2023 - nature.com
Determining how fracture network development leads to macroscopic failure in
heterogeneous materials may help estimate the timing of failure in rocks in the upper crust …

Reverse faulting within a continental plate boundary transform system

KF Townsend, MK Clark, NA Niemi - Tectonics, 2021 - Wiley Online Library
Contractional deformation is common along transform plate margins where plate motion is
oblique to the plate boundary. While faults that accommodate this deformation are often …

Smoothing of fault slip surfaces by scale‐invariant wear

K Dascher‐Cousineau, JD Kirkpatrick… - … Research: Solid Earth, 2018 - Wiley Online Library
Previous field observations suggest that fault slip surface roughness may decrease with slip.
However, measurements have yet to confidently isolate the effect of slip from other possible …

The evolving energy budget of experimental faults within continental crust: Insights from in situ dynamic X-ray microtomography

J McBeck, B Cordonnier, K Mair, F Renard - Journal of Structural Geology, 2019 - Elsevier
We investigate the evolving distribution of strain produced by a sliding fault within intact
crystalline rock, and the energetics of deformation that occur both on-and off-fault. We slid …