Compositional heterogeneity in the mantle transition zone
Earth's mantle transition zone (MTZ) is characterized by several sharp increases in seismic
wave speed between~ 300 km and~ 850 km depth. These seismic discontinuities are …
wave speed between~ 300 km and~ 850 km depth. These seismic discontinuities are …
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 …
Experimental elasticity of Earth's deep mantle
H Marquardt, AR Thomson - Nature Reviews Earth & Environment, 2020 - nature.com
Geophysical remote-sensing methods, particularly seismology, provide an incredibly
detailed view of the structure and composition of Earth's mantle. The seismic velocity …
detailed view of the structure and composition of Earth's mantle. The seismic velocity …
The Earth's lower mantle
FV Kaminsky - Composition and Structure. Cham: Springer Geology, 2017 - Springer
The Earth's lower mantle (extending from a depth of 660–2900 km) comprises more than
half (* 56%) of the total volume of the Earth. Most of the Earth's geodynamic processes stem …
half (* 56%) of the total volume of the Earth. Most of the Earth's geodynamic processes stem …
High pressure-temperature phase relations of basaltic crust up to mid-mantle conditions
A substantial amount of subducted basaltic crusts may exist in the lower mantle. It features
distinct chemical composition from the peridotitic mantle and plays important roles in the …
distinct chemical composition from the peridotitic mantle and plays important roles in the …
Buoyancy of slabs and plumes enhanced by curved post-garnet phase boundary
Mantle convection manifests in the subduction of cold slabs and the upwelling of hot plumes,
driving both near-surface processes such as volcanism and seismicity and the chemical …
driving both near-surface processes such as volcanism and seismicity and the chemical …
The evolution of mantle plumes in East Africa
Global tomography models show a large low‐velocity anomaly extending from the core‐
mantle boundary (CMB) beneath South Africa to the upper mantle in East Africa. Although it …
mantle boundary (CMB) beneath South Africa to the upper mantle in East Africa. Although it …
Confirmation of a change in the global shear velocity pattern at around 1000 km depth
In this study, we confirm the existence of a change in the shear velocity spectrum around
1000 km depth based on a new shear velocity tomographic model of the Earth's mantle …
1000 km depth based on a new shear velocity tomographic model of the Earth's mantle …
AxiSEM3D: broad-band seismic wavefields in 3-D global earth models with undulating discontinuities
We present a novel numerical method to simulate global seismic wave propagation in
realistic aspherical 3-D earth models across the observable frequency band of global …
realistic aspherical 3-D earth models across the observable frequency band of global …
Global observations of reflectors in the mid-mantle with implications for mantle structure and dynamics
Seismic tomography indicates that flow is commonly deflected in the mid-mantle. However,
without a candidate mineral phase change, causative mechanisms remain controversial …
without a candidate mineral phase change, causative mechanisms remain controversial …