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 …
[HTML][HTML] Core formation, mantle differentiation and core-mantle interaction within Earth and the terrestrial planets
RG Trønnes, MA Baron, KR Eigenmann, MG Guren… - Tectonophysics, 2019 - Elsevier
The terrestrial planets accreted from a diverse suite of solar system materials ranging from
strongly O-deficient materials similar to enstatite chondrites via ordinary chondrite materials …
strongly O-deficient materials similar to enstatite chondrites via ordinary chondrite materials …
Moon-forming impactor as a source of Earth's basal mantle anomalies
Seismic images of Earth's interior have revealed two continent-sized anomalies with low
seismic velocities, known as the large low-velocity provinces (LLVPs), in the lowermost …
seismic velocities, known as the large low-velocity provinces (LLVPs), in the lowermost …
GyPSuM: A joint tomographic model of mantle density and seismic wave speeds
GyPSuM is a 3‐D model of mantle shear wave (S) speeds, compressional wave (P) speeds,
and density. The model is developed through simultaneous inversion of seismic body wave …
and density. The model is developed through simultaneous inversion of seismic body wave …
[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 …
The chemical composition of the Earth: Enstatite chondrite models
We propose a new model of Earth's bulk composition based on enstatite chondrites (E-
chondrites), the only chondrite group isotopically identical to the Earth. This model allows a …
chondrites), the only chondrite group isotopically identical to the Earth. This model allows a …
Deep mantle structure as a reference frame for movements in and on the Earth
TH Torsvik, R van der Voo… - Proceedings of the …, 2014 - National Acad Sciences
Earth's residual geoid is dominated by a degree-2 mode, with elevated regions above large
low shear-wave velocity provinces on the core–mantle boundary beneath Africa and the …
low shear-wave velocity provinces on the core–mantle boundary beneath Africa and the …
Anomalous 182W in high 3He/4He ocean island basalts: fingerprints of Earth's core?
Abstract The short-lived 182 Hf-182 W isotope system (t 1/2= 9 Ma) left evidence in both
ancient and modern terrestrial rock record of processes that took place during the earliest …
ancient and modern terrestrial rock record of processes that took place during the earliest …
Cluster analysis of global lower mantle tomography: A new class of structure and implications for chemical heterogeneity
Earth's lower mantle is dominated by a pair of antipodal large low shear velocity provinces
(LLSVPs) that reach> 1000km up from the core–mantle boundary (CMB). These are …
(LLSVPs) that reach> 1000km up from the core–mantle boundary (CMB). These 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 …