Seismic tomography reveals 2 extensive regions in the lowermost mantle, beneath Africa
and the Pacific, that exhibit lower-than-average seismic wave speeds. These regions have …

With changing pressure and temperature conditions, downwelling and upwelling crustal and
mantle rocks experience several solid–solid phase transitions that affect the mineral …

Ultralow velocity zones (ULVZs) are the most anomalous structures within the Earth's
interior; however, given the wide range of associated characteristics (thickness and …

We use a self-consistent thermodynamic formalism to compute the phase equilibria and
physical properties of model mantle compositions, demonstrating that the seismological …

Some regions of the Earth's lowermost mantle exhibit anomalous seismic properties within a
thin zone, less than tens of kilometers in thickness, that directly overlies the core-mantle …

The abrupt changes in mineralogical properties across the Earth's mantle transition zone
substantially impact convection and thermochemical fluxes between the upper and lower …

Improved constraints on lower-mantle composition are fundamental to understand the
accretion, differentiation, and thermochemical evolution of our planet. Cosmochemical …

Numerical convection models of the thermochemical evolution of Venus are compared to
present‐day topography and geoid and recent resurfacing history. The models include …

Terrestrial planets are thought to experience episode (s) of large‐scale melting early in their
history. Fractionation during magma‐ocean freezing leads to unstable stratification within …

To explain Venus' young surface age and lack of plate tectonics, Venus' tectonic regime has
often been proposed to be either an episodic-lid regime with global lithospheric overturns, or …