High-pressure studies with x-rays using diamond anvil cells

G Shen, HK Mao - Reports on progress in Physics, 2016 - iopscience.iop.org
Pressure profoundly alters all states of matter. The symbiotic development of ultrahigh-
pressure diamond anvil cells, to compress samples to sustainable multi-megabar pressures; …

Effects of the electronic spin transitions of iron in lower mantle minerals: Implications for deep mantle geophysics and geochemistry

JF Lin, S Speziale, Z Mao… - Reviews of …, 2013 - Wiley Online Library
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 …

GyPSuM: A joint tomographic model of mantle density and seismic wave speeds

NA Simmons, AM Forte, L Boschi… - Journal of Geophysical …, 2010 - Wiley Online Library
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 …

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 …

[图书][B] Earth as an evolving planetary system

KC Condie - 2021 - books.google.com
Earth as an Evolving Planetary System, Fourth Edition discusses key topics dealing with the
evolution and interaction through time of Earth's crust, mantle, core, atmosphere …

A perovskitic lower mantle inferred from high-pressure, high-temperature sound velocity data

M Murakami, Y Ohishi, N Hirao, K Hirose - Nature, 2012 - nature.com
The determination of the chemical composition of Earth's lower mantle is a long-standing
challenge in earth science. Accurate knowledge of sound velocities in the lower-mantle …

Reconciling dynamic and seismic models of Earth's lower mantle: The dominant role of thermal heterogeneity

DR Davies, S Goes, JH Davies, BSA Schuberth… - Earth and Planetary …, 2012 - Elsevier
Two large low-shear-velocity provinces (LLSVPs) in the deep mantle beneath Africa and the
Pacific are generally interpreted as hot but chemically dense 'piles', which have remained …

Very low sound velocities in iron‐rich (Mg, Fe) O: Implications for the core‐mantle boundary region

JK Wicks, JM Jackson… - Geophysical Research …, 2010 - Wiley Online Library
The sound velocities of (Mg. 16Fe. 84) O have been measured to 121 GPa at ambient
temperature using nuclear resonant inelastic x‐ray scattering. The effect of electronic …

Spin-State Crossover and Hyperfine Interactions of Ferric Iron in Perovskite

H Hsu, P Blaha, M Cococcioni, RM Wentzcovitch - Physical Review Letters, 2011 - APS
Using density functional theory plus Hubbard U calculations, we show that the ground state
of (Mg, Fe)(Si, Fe) O 3 perovskite, the major mineral phase in Earth's lower mantle, has high …

Anomalous compressibility of ferropericlase throughout the iron spin cross-over

RM Wentzcovitch, JF Justo, Z Wu… - Proceedings of the …, 2009 - National Acad Sciences
The thermoelastic properties of ferropericlase Mg1− x Fe x O (x= 0.1875) throughout the iron
high-to-low spin cross-over have been investigated by first principles at Earth's lower mantle …