First-principles investigation of equilibrium magnesium isotope fractionation among mantle minerals: review and new data
Equilibrium inter-mineral Mg isotope fractionation factors (10 3 lnα) are key to using Mg
isotopes to investigate high-temperature geochemical processes. First-principles …
isotopes to investigate high-temperature geochemical processes. First-principles …
Hadean mantle oxidation inferred from melting of peridotite under lower-mantle conditions
The early Earth's mantle is believed to have been highly reducing when it formed from a
magma ocean equilibrating with the core. Conversely, some geological evidence suggests …
magma ocean equilibrating with the core. Conversely, some geological evidence suggests …
Global variations of Earth's 520-and 560-km discontinuities
We investigate seismic discontinuities in the mantle transition zone (MTZ) by analyzing SS
precursors recorded at global seismic stations. Our observations confirm the global …
precursors recorded at global seismic stations. Our observations confirm the global …
No globally detectable seismic interfaces within Earth's mantle transition zone: Evidence for basalt enrichment
Earth's mantle transition zone (MTZ) is characterized by multiple mineral phase changes.
The MTZ is bounded seismically by the 410-and 660-km elastic discontinuities, which are …
The MTZ is bounded seismically by the 410-and 660-km elastic discontinuities, which are …
A first-principles study of water in wadsleyite and ringwoodite: Implication for the 520 km discontinuity
The seismic discontinuity around 520 km is believed to be caused by the phase transition
from wad-sleyite to ringwoodite, the dominant minerals in the mantle transition zone (MTZ) …
from wad-sleyite to ringwoodite, the dominant minerals in the mantle transition zone (MTZ) …
The Upper‐Mantle Structure Beneath Alaska Imaged by Teleseismic S‐Wave Reverberations
Alaska is a tectonically active region with a long history of subduction and terrane accretion,
but knowledge of its deep seismic structure is limited by a relatively sparse station …
but knowledge of its deep seismic structure is limited by a relatively sparse station …
High pressure-temperature single-crystal elasticity of ringwoodite: Implications for detecting the 520 discontinuity and metastable ringwoodite at depths greater than …
Abstract The 520 km discontinuity (the 520) and the 660 km discontinuity (the 660) are
primarily caused by the wadsleyite to ringwoodite and ringwoodite to bridgmanite+ …
primarily caused by the wadsleyite to ringwoodite and ringwoodite to bridgmanite+ …
A single 520 km discontinuity beneath the contiguous United States with pyrolitic seismic properties
H Zhang, B Schmandt, WY Zhou… - Geophysical …, 2022 - Wiley Online Library
Olivine polymorphs are considered the most abundant minerals in Earth and vital to
governing its dynamics. Seismic discontinuities near 410 and 660 km depth are attributed to …
governing its dynamics. Seismic discontinuities near 410 and 660 km depth are attributed to …
Olivine–modified spinel–spinel transitions
M Akaogi - High-Pressure Silicates and Oxides: Phase Transition …, 2022 - Springer
Abstract Olivine of Mg-rich (Mg, Fe) 2SiO4 composition is accepted as the most abundant
mineral in the Earth's upper mantle. High-pressure phase transitions of (Mg, Fe) 2SiO4 …
mineral in the Earth's upper mantle. High-pressure phase transitions of (Mg, Fe) 2SiO4 …
Mantle transition zone receiver functions for Bermuda: Automation, quality control, and interpretation
AL Burky, JCE Irving, FJ Simons - Journal of Geophysical …, 2021 - Wiley Online Library
The origin of the Bermuda rise remains ambiguous, despite, or perhaps because of, the
existence of sometimes incongruous seismic wave‐speed and discontinuity models in the …
existence of sometimes incongruous seismic wave‐speed and discontinuity models in the …