Results 51 to 60 of about 180,659 (212)

Three water sites in upper mantle olivine and the role of titanium in the water weakening mechanism [PDF]

Infrared spectroscopy on synthetic olivines has established that there are at least four different mechanisms by which hydrogen is incorporated into the crystal structure.
Berry, A. J., Hermann, J., Walker, A. M., O'Neill, H. S.   +3 more
core   +1 more source

Atlas of the underworld: Slab remnants in the mantle, their sinking history, and a new outlook on lower mantle viscosity [PDF]

, 2018
Across the entire mantle we interpret 94 positive seismic wave-speed anomalies as subducted lithosphere and associate these slabs with their geological record.
Mantle dynamics & theoretical geophysics, Spakman, Wim, van der Meer, Douwe G., van Hinsbergen, Douwe J.J.   +3 more
core   +1 more source

Effect of bridgmanite-ferropericlase grain size evolution on Earth’s average mantle viscosity: implications for mantle convection in early and present-day Earth

Progress in Earth and Planetary Science
Recent experimental investigations of grain size evolution in bridgmanite-ferropericlase assemblages have suggested very slow growth for these bimodal phases.
Jyotirmoy Paul, Gregor J. Golabek, Antoine B. Rozel, Paul J. Tackley, Tomoo Katsura, Hongzhan Fei   +5 more
doaj   +1 more source

Carbonated Inheritance in the Eastern Tibetan Lithospheric Mantle: Petrological Evidences and Geodynamic Implications

Geochemistry, Geophysics, Geosystems, 2020
The timing and mechanism of formation of the Tibet Plateau remain elusive, and even the present‐day structure of the Tibetan lithosphere is hardly resolved, due to conflicting interpretations of the geophysical data.
Fanny Goussin, Nicolas Riel, Carole Cordier, Stéphane Guillot, Philippe Boulvais, Pierrick Roperch, Anne Replumaz, Karel Schulmann, Guillaume Dupont‐Nivet, Filipe Rosas, Zhaojie Guo   +10 more
doaj   +1 more source

The Magnetic Signature of Shear Zones in Marbles and Experimental Simulations

Geoscience Data Journal, Volume 13, Issue 4, October 2026.
This dataset explores how strain, microstructure, texture and magnetic susceptibility interact in natural and experimental shear zones. It includes data from low‐ and high‐temperature marble shear zones and analogue experiments simulating different deformation regimes.
Vladimír Kusbach, Zuzana Roxerová, Matěj Machek, Monika Kučeráková, Stanislav Vratislav, Anna Vávrová, Martin Chadima, Pedro F. Silva, Martin Racek   +8 more
wiley   +1 more source

A numerical study of the dynamics of subduction [PDF]

, 1988
The mechanics and dynamics of subduction have been studied using 2-D finite element analysis. Two finite element formulations have been employed; one formulation for Newtonian viscous flow and one formulation for linear elasticity and viscoelasticity ...
Whittaker, A.
core  

Mantle wedge serpentinization effects on slab dips

Terrestrial, Atmospheric and Oceanic Sciences, 2017
The mechanical coupling between a subducting slab and the overlying mantle wedge is an important factor in controlling the subduction dip angle and the flow in mantel wedge. This paper investigates the role of the amount of mantle serpentinization on the
Eh Tan
doaj   +1 more source

Subducting passive continental margins with crustal (ultra)mafic intrusions: An underappreciated mechanism for recycling water back into the mantle

Earth and Planetary Physics, 2023
It is well known that outer rise bending-assisted oceanic plate hydration is an important mechanism for transporting substantial amounts of water into the mantle.
CaiCai Pan, XiaoBo He
doaj   +1 more source

IGyTheM: Integrating Geodynamics With Thermodynamics Using Machine Learning

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Achieving a comprehensive understanding of mantle convection requires integrated models that couple mantle dynamics with thermodynamic properties. Although advances in computational geodynamics have substantially improved our ability to simulate the underlying physical processes, incorporating thermodynamics into self‐consistent geodynamic ...
Qian Yuan, Paul D. Asimow, Michael Gurnis, Paula Antoshechkina, Junjie Dong   +4 more
wiley   +1 more source

Ferropericlase Control of Lower Mantle Rheology: Impact of Phase Morphology

Geochemistry, Geophysics, Geosystems, 2020
The rheological properties of Earth's lower mantle play a key role for global mantle dynamics. The mineralogy of the lower mantle can be approximated as a bridgmanite‐ferropericlase mixture.
M. Thielmann, G. J. Golabek, H. Marquardt   +2 more
doaj   +1 more source