Continent-sized anomalous zones with low seismic velocity at the base of Earth's mantle
Seismic images of Earth's interior reveal two massive anomalous zones at the base of the
mantle, above the core, where seismic waves travel slowly. The mantle materials that …
mantle, above the core, where seismic waves travel slowly. The mantle materials that …
Core–mantle boundary heat flow
The Earth can be viewed as a massive heat engine, with various energy sources and sinks.
Insights into its evolution can be obtained by quantifying the various energy contributions in …
Insights into its evolution can be obtained by quantifying the various energy contributions in …
High accuracy mantle convection simulation through modern numerical methods
Numerical simulation of the processes in the Earth's mantle is a key piece in understanding
its dynamics, composition, history and interaction with the lithosphere and the Earth's core …
its dynamics, composition, history and interaction with the lithosphere and the Earth's core …
A review of large low shear velocity provinces and ultra low velocity zones
AK McNamara - Tectonophysics, 2019 - Elsevier
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 …
and the Pacific, that exhibit lower-than-average seismic wave speeds. These regions have …
High accuracy mantle convection simulation through modern numerical methods–II: realistic models and problems
Computations have helped elucidate the dynamics of Earth's mantle for several decades
already. The numerical methods that underlie these simulations have greatly evolved within …
already. The numerical methods that underlie these simulations have greatly evolved within …
Persistence of strong silica-enriched domains in the Earth's lower mantle
The composition of the lower mantle—comprising 56% of Earth's volume—remains poorly
constrained. Among the major elements, Mg/Si ratios ranging from∼ 0.9–1.1, such as in …
constrained. Among the major elements, Mg/Si ratios ranging from∼ 0.9–1.1, such as in …
Reconciling dynamic and seismic models of Earth's lower mantle: The dominant role of thermal heterogeneity
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 …
Pacific are generally interpreted as hot but chemically dense 'piles', which have remained …
Slab control on the mega-sized North Pacific ultra-low velocity zone
Ultra-low velocity zones (ULVZs) are localized small-scale patches with extreme physical
properties at the core-mantle boundary that often gather at the margins of Large Low …
properties at the core-mantle boundary that often gather at the margins of Large Low …
Tracking deep mantle reservoirs with ultra-low velocity zones
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 …
thin zone, less than tens of kilometers in thickness, that directly overlies the core-mantle …
Compositional mantle layering revealed by slab stagnation at~ 1000-km depth
Improved constraints on lower-mantle composition are fundamental to understand the
accretion, differentiation, and thermochemical evolution of our planet. Cosmochemical …
accretion, differentiation, and thermochemical evolution of our planet. Cosmochemical …