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Structure and Freezing of MgSiO3 Liquid in Earth's Lower Mantle
First-principles molecular-dynamics simulations show that over the pressure regime of Earth's mantle the mean silicon-oxygen coordination number of magnesium metasilicate liquid changes nearlyExpand
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Thermodynamics of mantle minerals - II. Phase equilibria
P>We complete the development and description of a thermodynamic method for the computation of phase equilibria and physical properties of multiphase mantle assemblages. Our previous paper focused onExpand
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Thermodynamics of mantle minerals – I. Physical properties
SUMMARY We present a theory for the computation of phase equilibria and physical properties of multicomponent assemblages relevant to the mantle of the Earth. The theory differs from previousExpand
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The effect of bulk composition and temperature on mantle seismic structure
Abstract We use a self-consistent thermodynamic formalism to compute the phase equilibria and physical properties of model mantle compositions, demonstrating that the seismological properties of aExpand
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Mineralogy and elasticity of the oceanic upper mantle: Origin of the low‐velocity zone
[1] We use a new method to construct an upper mantle model based on self-consistent computation of phase equilibria and physical properties. Computation of the isotropic elastic wave velocities of aExpand
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High-pressure elastic properties of major materials of Earth's mantle from first principles
The elasticity of materials is important for our understanding of processes ranging from brittle failure, to flexure, to the propagation of elastic waves. Seismologically revealed structure of theExpand
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Elasticity of iron at the temperature of the Earth's inner core
Seismological body-wave and free-oscillation studies of the Earth's solid inner core have revealed that compressional waves traverse the inner core faster along near-polar paths than in theExpand
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High-Pressure Elasticity of Iron and Anisotropy of Earth's Inner Core
A first principles theoretical approach shows that, at the density of the inner core, both hexagonal [hexagonal close-packed (hcp)] and cubic [face-centered-cubic (fcc)] phases of iron areExpand
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Talc under tension and compression: Spinodal instability, elasticity, and structure
[1] Talc occurs as a product of alteration of ultramafic rocks and may be a significant constituent of oceanic lithosphere and the arc mantle wedge. We explore the physical properties and structureExpand
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Viscosity of MgSiO3 Liquid at Earth’s Mantle Conditions: Implications for an Early Magma Ocean
Mixing the Magma Ocean Molten silicate makes up the majority of the magma we see spewing out of volcanoes, yet the mantle from which these melts originate is largely solid. The high pressures andExpand
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