Mantle convection and plate tectonics: Toward an integrated physical and chemical theory

PJ Tackley - Science, 2000 - science.org
Plate tectonics and convection of the solid, rocky mantle are responsible for transporting
heat out of Earth. However, the physics of plate tectonics is poorly understood; other planets …

Global tomographic images of mantle plumes and subducting slabs: insight into deep Earth dynamics

D Zhao - Physics of the Earth and Planetary Interiors, 2004 - Elsevier
A new model of whole mantle P-wave tomography is determined with a novel approach. A
grid parameterization instead of blocks and spherical harmonics is adopted to express the …

Probabilistic tomography maps chemical heterogeneities throughout the lower mantle

J Trampert, F Deschamps, J Resovsky, D Yuen - Science, 2004 - science.org
We obtained likelihoods in the lower mantle for long-wavelength models of bulk sound and
shear wave speed, density, and boundary topography, compatible with gravity constraints …

Origin of lateral variation of seismic wave velocities and density in the deep mantle

S Karato, BB Karki - Journal of Geophysical Research: Solid …, 2001 - Wiley Online Library
Strong constraints can be placed on the origin of heterogeneity of seismic wave velocities
and density if the observed ratios of various parameters are compared with mineral physics …

Multiscale seismic tomography and mantle dynamics

D Zhao - Gondwana Research, 2009 - Elsevier
In this article we first introduce the methodology of multiscale seismic tomography and the
way to interpret the obtained tomographic images, and then review the significant recent …

Three‐dimensional simulations of mantle convection with a thermo‐chemical basal boundary layer: D ″?

PJ Tackley - The core‐mantle boundary region, 1998 - Wiley Online Library
Numerical simulations in both two-and three-dimensions are performed to investigate the
hypothesis that D" is a thermo-chemical boundary layer. A layer of dense, compositionally …

The D ″discontinuity and its implications

ME Wysession, T Lay, J Revenaugh… - The core‐mantle …, 1998 - Wiley Online Library
Few seismic observations have revolutionized our con-cept of the deep Earth like the
discovery of a discontinuous increase in velocity a few hundred kilometers above the core …

Melting of (Mg, Fe)SiO3-Perovskite to 625 Kilobars: Indication of a High Melting Temperature in the Lower Mantle

A Zerr, R Boehier - Science, 1993 - science.org
The melting curves of two compositions of (Mg, Fe) SiO3-perovskite, the likely dominant
mineral phase in the lower mantle, have been measured in a CO2 laser-heated diamond …

The elastic constants of MgSiO3 perovskite at pressures and temperatures of the Earth's mantle

AR Oganov, JP Brodholt, GD Price - Nature, 2001 - nature.com
The temperature anomalies in the Earth's mantle associated with thermal convection can be
inferred from seismic tomography, provided that the elastic properties of mantle minerals are …

Effects of multiple phase transitions in a three‐dimensional spherical model of convection in Earth's mantle

PJ Tackley, DJ Stevenson… - Journal of …, 1994 - Wiley Online Library
Numerical models of mantle convection that incorporate the major mantle phase changes of
the transition zone reveal an inherently three‐dimensional flow pattern, with cylindrical …