▪ Abstract Observations of the geochemical diversity of mid-oceanic ridge and ocean-island
basalts have traditionally been attributed to the existence of large-scale mantle …

The P wave velocity structure beneath the Western Pacific is found from the International
Seismological Center first arrival data. Special attention was paid to the deep structure …

Shear-wave splitting of S and SKS phases reveals the anisotropy and strain field of the
mantle beneath the subducting Nazca plate, Cocos plate, and the Caribbean region. These …

Inclined zones of earthquakes are the primary expression of lithosphere subduction. A
distinct deep population of subduction-zone earthquakes occurs at depths of 350 to 690 …

We compare the predictions of compositional models of the mantle transition zone to
observed seismic properties by constructing phase diagrams in the MgO‐FeO‐CaO‐Al2O3 …

The seismic tomography problem does not have a unique solution, and published
tomographic images have been equivocal with regard to the deep structure of subducting …

The Earth's mantle is undergoing subsolidus thermal convection, driven by internal
radiogenic heat sources and heat conducted from the outer core. Seismic tomographic …

Chemical buoyancy relationships during subduction of young, thin oceanic plates cause
them to be trapped in a gravitationally stable layer between 600 and 700 km that partly …

Results of fluid dynamical experiments on the behavior of subducted slabs are presented
that address two important characteristics of subduction: slab penetration through the …

It is now widely accepted that the Earth's mantle is isotopically heterogeneous, but the scale
and distribution of this heterogeneity and the structure and evolution of the mantle as a …