Diverse styles of lithospheric drip**: Synthesizing gravitational instability models, continental tectonics, and geologic observations

M McMillan, LM Schoenbohm - Geochemistry, Geophysics …, 2023‏ - Wiley Online Library
Density instabilities in the lithosphere can founder gravitationally via viscous drip** and
decoupling from overlying crust. The lithospheric drip** concept has been invoked across …

Nonlinear viscoplasticity in ASPECT: Benchmarking and applications to subduction

A Glerum, C Thieulot, M Fraters, C Blom… - Solid Earth, 2018‏ - se.copernicus.org
ASPECT (Advanced Solver for Problems in Earth's ConvecTion) is a massively parallel finite
element code originally designed for modeling thermal convection in the mantle with a …

101 geodynamic modelling: How to design, carry out, and interpret numerical studies

I van Zelst, F Crameri, AE Pusok, A Glerum… - Solid Earth …, 2021‏ - se.copernicus.org
Geodynamic modelling provides a powerful tool to investigate processes in the Earth's crust,
mantle, and core that are not directly observable. However, numerical models are inherently …

On viscoplastic regularisation of strain‐softening rocks and soils

R de Borst, T Duretz - … for Numerical and Analytical Methods in …, 2020‏ - Wiley Online Library
Constitutive models for rocks and soils typically incorporate some form of strain softening.
Moreover, many plasticity models for frictional materials use a nonassociated flow rule …

Chemical and microstructural controls on viscoplasticity in Carbopol hydrogel

M Shafiei, M Balhoff, NW Hayman - Polymer, 2018‏ - Elsevier
Many engineering and natural materials, as well as earth systems, exhibit a combination of
elastic-plastic and viscous behaviors, but precisely evaluating their rheology, and the …

Resolving strain localization in frictional and time‐dependent plasticity: Two‐and three‐dimensional numerical modeling study using graphical processing units …

Y Alkhimenkov, L Khakimova, I Utkin… - Journal of …, 2024‏ - Wiley Online Library
Shear strain localization refers to the phenomenon of accumulation of material deformation
in narrow slip zones. Many materials exhibit strain localization under different spatial and …

Continuum approximation of dyking with a theory for poro-viscoelastic–viscoplastic deformation

Y Li, AE Pusok, T Davis, DA May… - Geophysical Journal …, 2023‏ - academic.oup.com
To reach Earth's surface, magma must ascend from the hot, ductile asthenosphere through
cold and brittle rock in the lithosphere. It does so via fluid-filled fractures called dykes. While …

The benefits of using a consistent tangent operator for viscoelastoplastic computations in geodynamics

T Duretz, A Souche, R De Borst… - Geochemistry …, 2018‏ - Wiley Online Library
Strain localization is ubiquitous in geodynamics and occurs at all scales within the
lithosphere. How the lithosphere accommodates deformation controls, for example, the …

[HTML][HTML] 101 geodynamic modelling: how to design, interpret, and communicate numerical studies of the solid Earth

I Van Zelst, F Crameri, AE Pusok, A Glerum… - Solid Earth, 2022‏ - se.copernicus.org
Geodynamic modelling provides a powerful tool to investigate processes in the Earth's crust,
mantle, and core that are not directly observable. However, numerical models are inherently …

Fluid migration in the mantle wedge: Influence of mineral grain size and mantle compaction

NG Cerpa, I Wada, CR Wilson - Journal of Geophysical …, 2017‏ - Wiley Online Library
Mineral grain size in the mantle affects fluid migration by controlling mantle permeability; the
smaller the grain size, the less permeable the mantle is. Mantle shear viscosity also affects …