Continent-sized anomalous zones with low seismic velocity at the base of Earth's mantle
Seismic images of Earth's interior reveal two massive anomalous zones at the base of the
mantle, above the core, where seismic waves travel slowly. The mantle materials that …
mantle, above the core, where seismic waves travel slowly. The mantle materials that …
[HTML][HTML] Core formation, mantle differentiation and core-mantle interaction within Earth and the terrestrial planets
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 …
Deep magma ocean formation set the oxidation state of Earth's mantle
K Armstrong, DJ Frost, CA McCammon, DC Rubie… - Science, 2019 - science.org
The composition of Earth's atmosphere depends on the redox state of the mantle, which
became more oxidizing at some stage after Earth's core started to form. Through high …
became more oxidizing at some stage after Earth's core started to form. Through high …
Thermal expansivity, heat capacity and bulk modulus of the mantle
We derive exact expressions for the thermal expansivity, heat capacity and bulk modulus for
assemblages with arbitrarily large numbers of components and phases, including the …
assemblages with arbitrarily large numbers of components and phases, including the …
Hydrous peridotitic fragments of Earth's mantle 660 km discontinuity sampled by a diamond
The internal structure and dynamics of Earth have been shaped by the 660 km boundary
between the mantle transition zone and lower mantle. However, due to the paucity of natural …
between the mantle transition zone and lower mantle. However, due to the paucity of natural …
Depressed 660-km discontinuity caused by akimotoite–bridgmanite transition
The 660-kilometre seismic discontinuity is the boundary between the Earth's lower mantle
and transition zone and is commonly interpreted as being due to the dissociation of …
and transition zone and is commonly interpreted as being due to the dissociation of …
BurnMan: A lower mantle mineral physics toolkit
We present BurnMan, an open‐source mineral physics toolbox to determine elastic
properties for specified compositions in the lower mantle by solving an Equation of State …
properties for specified compositions in the lower mantle by solving an Equation of State …
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 …
The composition and redox state of hydrous partial melts generated at the top of the lower mantle
Seismic low-velocity zones, that are proposed to form through hydrous partial melting, have
been observed at the top of the lower mantle. The buoyancy of such melts will depend …
been observed at the top of the lower mantle. The buoyancy of such melts will depend …
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 …