Determining the composition of Earth's lower mantle, which constitutes almost half of its total
volume, has been a central goal in the Earth sciences for more than a century given the …

The mantle's compositional structure reflects the thermochemical evolution of Earth. Yet,
even the radial average composition of the mantle remains debated. Here, we analyze a …

We have compiled a new data set of global PP and SS precursor waveforms that we jointly
invert in combination with fundamental-mode and higher-order Rayleigh-wave phase …

Seismic boundaries caused by phase transitions between olivine polymorphs in Earth's
mantle provide thermal and compositional markers that inform mantle dynamics. Seismic …

Abstract (Mg, Fe) O ferropericlase‐magnesiowüstite has been proposed to host the majority
of Earth's sodium, but the mechanism and capacity for incorporating the alkali cation remain …

Mid‐ocean ridges generate basalt and harzburgite, which are introduced into the mantle
through subduction as a mechanical mixture, contributing to both lateral and radial …

Earth's mantle transition zone (MTZ) is characterized by multiple mineral phase changes.
The MTZ is bounded seismically by the 410-and 660-km elastic discontinuities, which are …

In this study, we inverted a large set of normal-mode centre-frequencies and quality
(attenuation) factors, including astronomic-geodetic data (mass, moment of inertia and tidal …

This study investigates lateral variations in density contrast across the 660‐km discontinuity,
which is critical for understanding mantle convection and composition. We produce a global …

Here we illustrate the use of self-consistent models to address fundamental questions about
Earth's mantle and core structure. For this purpose, we invert a large set of recent normal …