Fat Plumes May Reflect the Complex Rheology of the Lower Mantle [PDF]
Geophysical Research Letters, 2018 Recent tomographic imaging of the mantle below major hot spots shows slow seismic velocities extending down to the core‐mantle boundary, confirming the existence of mantle plumes. However, these plumes are much thicker than previously thought.
Patrick Cordier +2 more
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Rheology of the lower mantle: an alternative review [PDF]
Progress in Earth and Planetary ScienceUnderstanding the rheology of the Earth’s lower mantle is essential for modelling mantle convection and its consequences for the geodynamical, thermal and chemical evolution of the planet.
Patrick Cordier +2 more
doaj +3 more sources
Narrow, Fast, and “Cool” Mantle Plumes Caused by Strain‐Weakening Rheology in Earth's Lower Mantle
Geochemistry, Geophysics, Geosystems, 2022 The rheological properties of Earth's lower mantle are key for mantle dynamics and planetary evolution. The main rock‐forming minerals in the lower mantle are bridgmanite (Br) and smaller amounts of ferropericlase (Fp).
Anna Gulcher +2 more
exaly +3 more sources
Effects of Composite Rheology on Plate‐Like Behavior in Global‐Scale Mantle Convection
Geophysical Research Letters, 2023 Earth's upper mantle rheology controls lithosphere‐asthenosphere coupling and thus surface tectonics. Rock deformation experiments and seismic anisotropy measurements indicate that composite rheology (co‐existing diffusion and dislocation creep) occurs ...
Maelis Arnould +2 more
exaly +2 more sources
Modulation of intra-oceanic trench bending and along-trench thermochemical transport by mantle toroidal flow [PDF]
Nature CommunicationsOceanic trench bending over 1000 km occurs globally, with notable along-trench variations in mantle wedge thermochemistry. However, the mechanisms influencing both shallow trench geometry and deep mantle state remain unclear. Here we focus on the Mariana
Liang Liu +7 more
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Spin Transition of Iron in Deep‐Mantle Ferromagnesite
Geophysical Monograph Series, Page 115-125., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Jiachao Liu, Suyu Fu, Jung‐Fu Lin
wiley +3 more sources
The impact of rheological uncertainty on dynamic topography predictions [PDF]
Solid Earth, 2019 Much effort is being made to extract the dynamic components of the Earth's topography driven by density heterogeneities in the mantle. Seismically mapped density anomalies have been used as an input into mantle convection models to predict the present ...
Ö. F. Bodur, Ö. F. Bodur, P. F. Rey
doaj +1 more source
Models of plate tectonics with the Lattice Boltzmann Method
Artificial Intelligence in Geosciences, 2023 Modern geodynamics is based on the study of a large set of models, with the variation of many parameters, whose analysis in the future will require Machine Learning to be analyzed.
Peter Mora +2 more
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The Role of Lower Crustal Rheology in Lithospheric Delamination During Orogeny
Frontiers in Earth Science, 2021 The continental lower crust is an important composition- and strength-jump layer in the lithosphere. Laboratory studies show its strength varies greatly due to a wide variety of composition. How the lower crust rheology influences the collisional orogeny
Lin Chen
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An effective parameterization of texture-induced viscous anisotropy in orthotropic materials with application for modeling geodynamical flows [PDF]
Journal of Theoretical, Computational and Applied Mechanics, 2021 In this article, we describe the mathematical formulation and the numerical implementation of an effective parametrization of the viscous anisotropy of orthorhombic materials produced by crystallographic preferred orientations (CPO or texture), which can
Javier Signorelli +3 more
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