Seismic Velocity Variations in a 3D Martian Mantle: Implications for the InSight Measurements

Post - Perovskite in the Lowermost Mantle Anticorrelated Seismic Velocity

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Melting of Model Martian Mantle at High-pressure: Implications for the Composition of the Martian Basalt Source Region

High-pressure melting experiments on the Homestead L5 ordinary chondrite were performed at 5 GPa in a multi-anvil device over a temperature interval that ranged from near solidus to near liquidus conditions. Near solidus silicate liquids of Homestead have higher CaO/Al2O3 and lower Mg# compared to solidus liquids of terrestrial peridotite (e.g.: KLB-1) at this pressure. The silicate portion of ...

Mid-mantle seismic anisotropy beneath southwestern Pacific subduction systems and implications for mid-mantle deformation

Observations of seismic anisotropy can offer relatively direct constraints on patterns of mantle deformation, but most studies have focused on the upper mantle. While much of the lower mantle is thought to be isotropic, several recent studies have found evidence for anisotropy in the transition zone and uppermost lower mantle (the mid-mantle), particularly in the vicinity of subducting slabs. H...

New bulk sulfur measurements of Martian meteorites and modeling the fate of sulfur during melting and crystallization – Implications for sulfur transfer from Martian mantle to crust–atmosphere system

Material for : “ Continent - sized low seismic velocity anomalies at the base of Earth ’ s mantle ”

In this paper, we discuss large low velocity provinces (LLVPs) in Earth’s lowermost mantle, explore their dynamics and possible composition, and consider evolutionary scenarios. The question of thermochemical piles as the origin to LLVPs is important, as it forms the foundation for our understanding of the thermal state of the mantle, the thermal and chemical evolution of Earth’s interior, the ...