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 …
[HTML][HTML] Atlas of the underworld: Slab remnants in the mantle, their sinking history, and a new outlook on lower mantle viscosity
Across the entire mantle we interpret 94 positive seismic wave-speed anomalies as
subducted lithosphere and associate these slabs with their geological record. We document …
subducted lithosphere and associate these slabs with their geological record. We document …
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 …
Global variations in abyssal peridotite compositions
JM Warren - Lithos, 2016 - Elsevier
Abyssal peridotites are ultramafic rocks collected from mid-ocean ridges that are the
residues of adiabatic decompression melting. Their compositions provide information on the …
residues of adiabatic decompression melting. Their compositions provide information on the …
Achievements and prospects of global broadband seismographic networks after 30 years of continuous geophysical observations
Global seismographic networks (GSNs) emerged during the late nineteenth and early
twentieth centuries, facilitated by seminal international developments in theory, technology …
twentieth centuries, facilitated by seminal international developments in theory, technology …
Whole-mantle radially anisotropic shear velocity structure from spectral-element waveform tomography
SW French, BA Romanowicz - Geophysical Journal International, 2014 - academic.oup.com
The radially anisotropic shear velocity structure of the Earth's mantle provides a critical
window on the interior dynamics of the planet, with isotropic variations that are interpreted in …
window on the interior dynamics of the planet, with isotropic variations that are interpreted in …
Persistent high paleosecular variation activity in southern hemisphere for at least 10 000 years
Direct observations of the geomagnetic field show that secular variation is strong in the
Atlantic hemisphere, and comparatively reduced in the Pacific region. The dipole has been …
Atlantic hemisphere, and comparatively reduced in the Pacific region. The dipole has been …
[HTML][HTML] Global kinematics of tectonic plates and subduction zones since the late Paleozoic Era
Detailed global plate motion models that provide a continuous description of plate
boundaries through time are an effective tool for exploring processes both at and below the …
boundaries through time are an effective tool for exploring processes both at and below the …
Global mantle structure from multifrequency tomography using P, PP and P-diffracted waves
In global-scale seismic tomography, teleseismic P and PP waves mainly constrain structures
in the upper two thirds of the mantle, whereas core-diffracted waves (Pdiff) constrain the …
in the upper two thirds of the mantle, whereas core-diffracted waves (Pdiff) constrain the …
Seismic wavefield imaging of Earth's interior across scales
J Tromp - Nature Reviews Earth & Environment, 2020 - nature.com
Seismic full-waveform inversion (FWI) for imaging Earth's interior was introduced in the late
1970s. Its ultimate goal is to use all of the information in a seismogram to understand the …
1970s. Its ultimate goal is to use all of the information in a seismogram to understand the …