Effects of the electronic spin transitions of iron in lower mantle minerals: Implications for deep mantle geophysics and geochemistry
We have critically reviewed and discussed currently available information regarding the spin
and valence states of iron in lower mantle minerals and the associated effects of the spin …
and valence states of iron in lower mantle minerals and the associated effects of the spin …
Brillouin scattering and its application in geosciences
S Speziale, H Marquardt… - Reviews in Mineralogy …, 2014 - pubs.geoscienceworld.org
Brillouin spectroscopy is an optical technique that allows one to determine the directional
dependence of acoustic velocities in minerals and materials subject to a wide range of …
dependence of acoustic velocities in minerals and materials subject to a wide range of …
LLNL‐G3Dv3: Global P wave tomography model for improved regional and teleseismic travel time prediction
NA Simmons, SC Myers… - … Research: Solid Earth, 2012 - Wiley Online Library
We develop a global‐scale P wave velocity model (LLNL‐G3Dv3) designed to accurately
predict seismic travel times at regional and teleseismic distances simultaneously. The model …
predict seismic travel times at regional and teleseismic distances simultaneously. The model …
Slab stagnation in the shallow lower mantle linked to an increase in mantle viscosity
Subduction of oceanic lithosphere is the main process by which material from Earth's
surface and atmosphere is recycled back into the deep mantle. Seismic images indicate that …
surface and atmosphere is recycled back into the deep mantle. Seismic images indicate that …
Elastic anomalies in a spin-crossover system: Ferropericlase at lower mantle conditions
The discovery of a pressure induced iron-related spin crossover in Mg (1-x) Fe x O
ferropericlase (Fp) and Mg-silicate perovskite, the major phases of Earth's lower mantle, has …
ferropericlase (Fp) and Mg-silicate perovskite, the major phases of Earth's lower mantle, has …
Evidence for a Fe3+-rich pyrolitic lower mantle from (Al,Fe)-bearing bridgmanite elasticity data
The chemical composition of Earth's lower mantle can be constrained by combining
seismological observations with mineral physics elasticity measurements,,. However, the …
seismological observations with mineral physics elasticity measurements,,. However, the …
Spin crossover in ferropericlase at high pressure: A seismologically transparent transition?
Seismic discontinuities in Earth typically arise from structural, chemical, or temperature
variations with increasing depth. The pressure-induced iron spin state transition in the lower …
variations with increasing depth. The pressure-induced iron spin state transition in the lower …
Thermally dominated deep mantle LLSVPs: a review
The two large low shear-wave velocity provinces (LLSVPs) that dominate lower-mantle
structure may hold key information on Earth's thermal and chemical evolution. It is generally …
structure may hold key information on Earth's thermal and chemical evolution. It is generally …
Stability of ferrous-iron-rich bridgmanite under reducing midmantle conditions
Our current understanding of the electronic state of iron in lower-mantle minerals leads to a
considerable disagreement in bulk sound speed with seismic measurements if the lower …
considerable disagreement in bulk sound speed with seismic measurements if the lower …
Spin crossover in ferropericlase and velocity heterogeneities in the lower mantle
Deciphering the origin of seismic velocity heterogeneities in the mantle is crucial to
understanding internal structures and processes at work in the Earth. The spin crossover in …
understanding internal structures and processes at work in the Earth. The spin crossover in …