▪ Abstract The mechanisms of exchange of hydrogen between the deep interior and surface
of Earth, as well as the means of retention and possible abundance of hydrogen deep within …

The presence of water strongly influences the structure, composition and dynamics of the
Earth's deep mantle,,,. Hydrous magnesium-rich silicates play an important role in …

It is possible that the majority of Earth's H2O budget is present as hydroxyl (OH) structurally
incorporated into the major nominally anhydrous minerals (NAMs) of the mantle (eg, Martin …

The phase relations in hydrous and anhydrous mid-ocean ridge basalt were determined at
pressures of 18–28GPa. Liquidus phase relations in hydrous and anhydrous MORB are …

First principles calculations have shown that the high‐pressure phase transition of phase D
MgSi2O6H2 to the new high‐pressure hydrous phase MgSiO4H2 plus stishovite occurs at …

Over the past few decades, hydrous minerals were thought to be absent in the lower mantle,
due to their instability at high-pressure conditions. Recently, however, hydrous phases …

We have investigated the physical and structural properties of phase D (MgSi2O6H2) at high
pressure by means of a first-principles calculation method. Phase D is important as a dense …

The thermodynamic properties and elasticity of superhydrous phase B (ShyB) at high
pressure and temperature are calculated using first‐principles calculations based on density …

With the steady development of static high-pressure techniques in recent years, it is now
possible to probe in increasing detail the novel behavior of materials subjected to extreme …

Dense hydrous magnesium silicate (DHMS) phases play a crucial role in transporting water
in to the Earth's interior. A newly discovered DHMS, phase H (MgSiO4H2), is stable at …