Silica-water superstructure and one-dimensional superionic conduit in Earth's mantle
Water in Earth's deep interior is predicted to be hydroxyl (OH−) stored in nominally
anhydrous minerals, profoundly modulating both structure and dynamics of Earth's mantle …
anhydrous minerals, profoundly modulating both structure and dynamics of Earth's mantle …
Water speciation and hydrogen isotopes in hydrous stishovite: implications for the deep Earth water cycle
Stishovite is a key mineral for understanding the deep Earth water cycle because of its
potential as a main carrier for water into the transition zone and lower mantle. During …
potential as a main carrier for water into the transition zone and lower mantle. During …
Large H2O solubility in dense silica and its implications for the interiors of water-rich planets
C Nisr, H Chen, K Leinenweber… - Proceedings of the …, 2020 - National Acad Sciences
Sub-Neptunes are common among the discovered exoplanets. However, lack of knowledge
on the state of matter in H 2 O-rich setting at high pressures and temperatures (P− T) places …
on the state of matter in H 2 O-rich setting at high pressures and temperatures (P− T) places …
Evidence for the stability of ultrahydrous stishovite in Earth's lower mantle
The distribution and transportation of water in Earth's interior depends on the stability of
water-bearing phases. The transition zone in Earth's mantle is generally accepted as an …
water-bearing phases. The transition zone in Earth's mantle is generally accepted as an …
Elasticity of Hydrated Al‐Bearing Stishovite and Post‐Stishovite: Implications for Understanding Regional Seismic VS Anomalies Along Subducting Slabs in the …
Seismic studies have found seismic scatterers with− 2 to− 12% shear velocity anomalies
along some subducting slabs at 700–1900 km depth. The ferroelastic post‐stishovite …
along some subducting slabs at 700–1900 km depth. The ferroelastic post‐stishovite …
Hydrous SiO2 in subducted oceanic crust and H2O transport to the core-mantle boundary
Subduction of oceanic lithosphere transports surface H 2 O into the mantle. Recent studies
show that dense SiO 2 in the form of stishovite, an abundant mineral in subducted oceanic …
show that dense SiO 2 in the form of stishovite, an abundant mineral in subducted oceanic …
Hydrogen solubility of stishovite provides insights into water transportation to the deep Earth
M Chen, C Yin, D Chen, L Tian, L Liu, L Kang - Solid Earth, 2024 - se.copernicus.org
Water dissolved in nominally anhydrous minerals (NAMs) can be transported to deep
regions of the Earth through subducting slabs, thereby significantly influencing the …
regions of the Earth through subducting slabs, thereby significantly influencing the …
Elasticity of Hydrous SiO2 Across the Post‐Stishovite Transition in the Lower Mantle
Elastic properties of Si0. 95H0. 21O2 with hydrogarnet substitution (4H+= Si4+) across the
post‐stishovite transition (28–42 GPa) are determined up to 70 GPa using ab initio …
post‐stishovite transition (28–42 GPa) are determined up to 70 GPa using ab initio …
Discovery of stishovite in the prismatine-bearing granulite from Waldheim, Germany: A possible role of supercritical fluids of ultrahigh-pressure origin
R Thomas, P Davidson, A Rericha, U Recknagel - Geosciences, 2022 - mdpi.com
For the first time in the sixty years since the synthesis of stishovite, we report unambiguous
evidence of stishovite formed in the deep Earth. A minimum pressure of about 7.5 GPa at …
evidence of stishovite formed in the deep Earth. A minimum pressure of about 7.5 GPa at …
Temperature Dependence of H2O Solubility in Al‐Free Stishovite
The role of stishovite in transporting water in subducting slabs has been a subject of debate
for several decades. Here we investigated stishovite's water solubility and its potential role in …
for several decades. Here we investigated stishovite's water solubility and its potential role in …