Mantle plumes and their role in Earth processes
The existence of mantle plumes was first proposed in the 1970s to explain intra-plate,
hotspot volcanism, yet owing to difficulties in resolving mantle upwellings with geophysical …
hotspot volcanism, yet owing to difficulties in resolving mantle upwellings with geophysical …
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 …
Plume generation zones at the margins of large low shear velocity provinces on the core–mantle boundary
Large Igneous Province (LIP) eruption sites of the past 300 My lie vertically above 1% slow
shear wave velocity (Vs) contours bounding the African and Pacific Large Low Shear …
shear wave velocity (Vs) contours bounding the African and Pacific Large Low Shear …
Viscosity jump in Earth's mid-mantle
The viscosity structure of Earth's deep mantle affects the thermal evolution of Earth, the
ascent of mantle plumes, settling of subducted oceanic lithosphere, and the mixing of …
ascent of mantle plumes, settling of subducted oceanic lithosphere, and the mixing of …
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 …
Thermochemical structures beneath Africa and the Pacific Ocean
AK McNamara, S Zhong - Nature, 2005 - nature.com
Large low-velocity seismic anomalies have been detected in the Earth's lower mantle
beneath Africa and the Pacific Ocean that are not easily explained by temperature variations …
beneath Africa and the Pacific Ocean that are not easily explained by temperature variations …
A benchmark study on mantle convection in a 3‐D spherical shell using CitcomS
As high‐performance computing facilities and sophisticated modeling software become
available, modeling mantle convection in a three‐dimensional (3‐D) spherical shell …
available, modeling mantle convection in a three‐dimensional (3‐D) spherical shell …
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 …
A tectonic-rules-based mantle reference frame since 1 billion years ago–implications for supercontinent cycles and plate–mantle system evolution
Understanding the long-term evolution of Earth's plate–mantle system is reliant on absolute
plate motion models in a mantle reference frame, but such models are both difficult to …
plate motion models in a mantle reference frame, but such models are both difficult to …
Constraints on thermochemical convection of the mantle from plume heat flux, plume excess temperature, and upper mantle temperature
S Zhong - Journal of Geophysical Research: Solid Earth, 2006 - Wiley Online Library
Seismic and geochemical observations indicate a compositionally heterogeneous mantle in
the lower mantle, suggesting a layered mantle. The volume and composition of each layer …
the lower mantle, suggesting a layered mantle. The volume and composition of each layer …