The lowermost (> 2400km) Earth's mantle mapped by seismic tomography is strongly
heterogeneous, the most striking feature being two large regions where shear-wave velocity …

Two large low-shear-velocity provinces (LLSVPs) in the deep mantle beneath Africa and the
Pacific are generally interpreted as hot but chemically dense 'piles', which have remained …

The large low shear‐wave velocity provinces (LLSVP) are thermochemical anomalies in the
deep Earth's mantle, thousands of km wide and∼ 1800 km high. This study explores the …

Within the upper mantle, the seismic discontinuity at 410-km depth marks the top of the
transition zone and is attributed to pressure-induced transformation of olivine into wadsleyite …

Mantle tomography reveals the existence of two large low-shear-velocity provinces
(LLSVPs) at the base of the mantle. We examine here the hypothesis that they are piles of …

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 …

We inverted 4864 ScS‐S and 1671 Sdiff‐SKS residual travel times for shear wave speed
anomalies at the base of the Earth's mantle. We applied ellipticity corrections, accounted for …

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 widespread low seismic velocity zone (LVZ) in the shallow oceanic mantle has long
been debated in terms of mantle melting. At LVZ depths, volatiles (CO 2 and H 2 O) are …

Surface geophysical data that are related to the process of thermal convection in the Earth's
mantle provide constraints on the rheological properties and density structure of the mantle …