Zobrazeno 1 - 10
of 182
pro vyhledávání: '"Hansen, Lars. N."'
To examine the microstructural evolution that occurs during transient creep, we deformed olivine aggregates to different strains that spanned the initial transient deformation. Two sets of samples with different initial grain sizes of 5 $\mu$m and 20
Externí odkaz:
http://arxiv.org/abs/2407.04982
Partially molten rock is a densely packed, melt-saturated, granular medium, but it has seldom been considered in these terms. In this manuscript, we extend the continuum theory of partially molten rock to incorporate the physics of granular media. Ou
Externí odkaz:
http://arxiv.org/abs/2309.09688
Publikováno v:
In Ultramicroscopy March 2024 257
The size distribution of grains is a fundamental characteristic of polycrystalline solids. In the absence of deformation, the grain-size distribution is controlled by normal grain growth. The canonical model of normal grain growth, developed by Hille
Externí odkaz:
http://arxiv.org/abs/2102.01798
Autor:
Wallis, David, Harris, Joe, Böhm, Corinna F., Wang, Di, Zavattieri, Pablo, Feldner, Patrick, Merle, Benoit, Pipich, Vitaliy, Hurle, Katrin, Leupold, Simon, Hansen, Lars N., Marin, Frédéric, Wolf, Stephan E.
Publikováno v:
Material Advances, 2022
Biomineralizing organisms are widely noted and extensively studied due to their ability to generate structures exhibiting exceptional crystallographic control. Primarily, it is the organisms, such as sea-urchins or bivalves, that generate nearly sing
Externí odkaz:
http://arxiv.org/abs/2008.05790
Changes in stress applied to mantle rocks, such as those imposed by earthquakes, induce a period of evolution in viscosity and microstructure. This transient creep is often modelled based on stress transfer among slip systems due to grain interaction
Externí odkaz:
http://arxiv.org/abs/2006.05195
Autor:
Wallis, David, Hansen, Lars. N., Kumamoto, Kathryn M., Thom, Christopher A., Plümper, Oliver, Ohl, Markus, Durham, William B., Goldsby, David L., Armstrong, David E. J., Meyers, Cameron D., Goddard, Rellie, Warren, Jessica M., Breithaupt, Thomas, Drury, Martyn R., Wilkinson, Angus J.
The strength of the lithosphere is typically modelled based on constitutive equations for steady-state flow. However, models of lithospheric flexure reveal differences in lithospheric strength that are difficult to reconcile based on such flow laws.
Externí odkaz:
http://arxiv.org/abs/1909.08427
The mechanical behavior of antigorite strongly influences the strength and deformation of the subduction interface. Although there is microstructural evidence elucidating the nature of brittle deformation at low pressures, there is often conflicting
Externí odkaz:
http://arxiv.org/abs/1905.08371
Analysis of distortions of the crystal lattice within individual mineral grains is central to the investigation of microscale processes that control and record tectonic events. These distortions are generally combinations of lattice rotations and ela
Externí odkaz:
http://arxiv.org/abs/1904.08393
Laboratory measurements of seismic velocity and attenuation in antigorite serpentinite at a confining pressure of $2$ kbar and temperatures up to $550^\circ$C (i.e., in the antigorite stability field) provide new results relevant to the interpretatio
Externí odkaz:
http://arxiv.org/abs/1811.06748