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 …

The Earth's lithosphere can focus basaltic magmatism along pre-existing weakness zones or
discontinuities. However, apart from the influence on the geochemistry of magmas emplaced …

Results are reported of an exploration of mantle source lithology for intraplate magmas
using whole-rock and olivine phenocryst compositions. This analysis includes modern mid …

There is no consensus on the processes responsible for near-coeval formation of Archaean
continental crust (dominantly tonalite–trondhjemite–granodiorite: TTG), greenstone belts …

The two parallel chains of Hawaiian volcanoes ('Loa'and 'Kea') are known to have
statistically different but overlapping radiogenic isotope characteristics. This has been …

Lavas erupted at ocean island hotspots such as Hawaii have diverse geochemical
signatures. These ocean island basalts are thought to be derived from many sources with …

Geodynamic models of thermo‐chemical plumes rising in a mantle wind suggest that we
should abandon some paradigms based on the dynamics of purely thermal axisymmetric …

New geochemical data integrated in a petrogenetic model indicate that the∼ 30 Ma
Northern Ethiopian continental flood basalts (CFBs) preserve a record of magmas generated …

Mantle plumes originate at depths near the core− mantle boundary (~ 2,800 km). As such,
they provide invaluable information about the composition of the deep mantle and insight …

The existence, spatial distribution, and style of volcanism on terrestrial planets is an
expression of their internal dynamics and evolution. On Earth a physical link has been …