A theory of inter‐granular transient dislocation creep: Implications for the geophysical studies on mantle rheology

S Karato - Journal of Geophysical Research: Solid Earth, 2021 - Wiley Online Library
Transient creep may play an important role in short‐term (small strain) time‐dependent
deformation such as the post‐glacial rebound and the post‐seismic deformation. Among …

Pressure-dependent large-scale seismic anisotropy induced by non-Newtonian mantle flow

JK Magali, EE Ledoux, C Thomas… - Geophysical Journal …, 2024 - academic.oup.com
Observations of large-scale seismic anisotropy can be used as a marker for past and current
deformation in the Earth's mantle. Nonetheless, global features such as the decrease of the …

Surrounding rock stability in unsupported roof area and rapid heading technique for deep arch coal roadways under goaf

Y Bi, M Wang, C Wu, Y Huang - Minerals, 2022 - mdpi.com
In order to achieve rapid heading of deep arch coal roadways under goaf, the maximum
unsupported roof distance (URD), surrounding rock stability of unsupported roof area and …

Plastic deformation of dry fine-grained olivine aggregates under high pressures

RE Silber, J Girard, H Chen… - American …, 2024 - pubs.geoscienceworld.org
This study investigates the effect of pressure on diffusion creep of dry San Carlos and
synthetic (prepared by sol-gel method) olivine. We prepared dry (water content< 9 ppm wt) …

Physical simulation test on surrounding rock deformation of roof rockburst in continuous tunneling roadway

Y Shi, Y Ye, N Hu, Y Jiao, X Wang - Minerals, 2021 - mdpi.com
To study the occurrence process, as well as the temporal and spatial evolution laws, of
rockburst disasters, the roof deformation of continuous heading roadways during rockburst …

Effects of pressure on diffusion creep in wet olivine aggregates

RE Silber, J Girard, S Karato - Physics of the Earth and Planetary Interiors, 2022 - Elsevier
We report the results of an experimental study to determine the influence of pressure on
diffusion creep in wet olivine. In order to observe diffusion creep at high-pressure conditions …

Deformation and strength of mantle relevant garnets: Implications for the subduction of basaltic-rich crust

CE Vennari, F Lin, M Kunz, M Akaogi, L Miyagi… - American …, 2021 - degruyter.com
Garnet is an important mineral phase in the upper mantle as it is both a key component in
bulk mantle rocks, and a primary phase at high pressure within subducted basalt. Here, we …

Synchrotron radiation reveals transient weakening during mineral phase transformations

AJ Cross, R Goddard, KM Kumamoto, DL Goldsby… - 2024 - eartharxiv.org
Phase transformations are widely invoked as a source of rheological weakening during
subduction, continental collision, mantle convection, and various other geodynamic …

Deformation and plasticity of materials under extreme conditions

S Merkel - 2022 - lilloa.univ-lille.fr
Understanding mechanical properties and their microscopic origins is fundamental for
multiple fields in condensed matter research. They are controlled by defects, dislocations …

[PDF][PDF] Microphysics of viscoplasticity in Earth's interior

L Hanson - isrdrcn.org
The rheological behavior of the solid Earth fundamentally controls a wide variety of
geodynamic processes. The elastic and anelastic behavior of rocks controls the velocities …