Perovskite in Earth's deep interior
Silicate perovskite-type phases are the most abundant constituent inside our planet and are
the predominant minerals in Earth's lower mantle more than 660 kilometers below the …
the predominant minerals in Earth's lower mantle more than 660 kilometers below the …
Thermodynamic properties and phase relations in mantle minerals investigated by first principles quasiharmonic theory
This research has been motivated by geophysics and materials physics. The objective of this
research has been to advance materials theory and computations for high pressure and …
research has been to advance materials theory and computations for high pressure and …
A perovskitic lower mantle inferred from high-pressure, high-temperature sound velocity data
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 …
challenge in earth science. Accurate knowledge of sound velocities in the lower-mantle …
Sound velocity of CaSiO3 perovskite suggests the presence of basaltic crust in the Earth's lower mantle
Laboratory measurements of sound velocities of high-pressure minerals provide crucial
information on the composition and constitution of the deep mantle via comparisons with …
information on the composition and constitution of the deep mantle via comparisons with …
Seismic velocities of CaSiO3 perovskite can explain LLSVPs in Earth's lower mantle
Seismology records the presence of various heterogeneities throughout the lower mantle,,
but the origins of these signals—whether thermal or chemical—remain uncertain, and …
but the origins of these signals—whether thermal or chemical—remain uncertain, and …
Dynamic stabilization of cubic perovskite at high temperatures and pressures from ab initio molecular dynamics
T Sun, DB Zhang, RM Wentzcovitch - Physical Review B, 2014 - APS
The stability of cubic Ca Si O 3 perovskite (CaPv) at high temperatures and pressures is
investigated by vibrational normal-mode analysis. We compute power spectra of mode …
investigated by vibrational normal-mode analysis. We compute power spectra of mode …
Organic acids under pressure: Elastic properties, negative mechanical phenomena and pressure induced phase transitions in the lactic, maleic, succinic and citric …
F Colmenero - Materials Advances, 2020 - pubs.rsc.org
A detailed study of the behavior under pressure of four important organic acids using the first-
principles solid-state methodology is presented. These organic acids are the L-(+)-lactic …
principles solid-state methodology is presented. These organic acids are the L-(+)-lactic …
Constraints on the presence of post-perovskite in Earth's lowermost mantle from tomographic-geodynamic model comparisons
Lower mantle tomography models consistently feature an increase in the ratio of shear-wave
velocity (VS) to compressional-wave velocity (VP) variations and a negative correlation …
velocity (VS) to compressional-wave velocity (VP) variations and a negative correlation …
Converted phases from sharp 1000 km depth mid-mantle heterogeneity beneath Western Europe
Until recently, most of the lower mantle was generally considered to be well-mixed with
strong heterogeneity restricted to the lowermost several hundred kilometres above the core …
strong heterogeneity restricted to the lowermost several hundred kilometres above the core …
Stability and Reactions of CaCO3 Polymorphs in the Earth's Deep Mantle
As an important component of carbonates in the mantle, CaCO3 is a major carrier of carbon
from the surface to the deep interiors. In recent years, new varieties of CaCO3 polymorphs …
from the surface to the deep interiors. In recent years, new varieties of CaCO3 polymorphs …