Phase transformations in mantle mineralogies probably cause the transition zone seismic
discontinuities, nominally at 410, 520, and 660 km depth. Thermodynamic principles govern …

Water plays an important role in most processes within the Earth's mantle, eg transport
phenomena, differentiation and seismic properties. This paper reviews the various aspects …

Phase relations of the olivine‐wadsleyite transition in the system (Mg, Fe) 2SiO4 have been
determined at 1600 and 1900 K using the quench method in a Kawai‐type high‐pressure …

The 410-kilometer seismic discontinuity is generally considered to be caused by a phase
transformation of the main constituent of the upper mantle, olivine, α-(Mg, Fe) 2SiO4, to β …

Systematic stacks of P wave receiver functions (Pds) for 118 global seismic stations yield
new transition zone thickness (WTZ) estimates, as measured by the difference in depths …

The phase transformations which take place in peridotite between 19 and 25 GPa have
been investigated by performing experiments at closely spaced pressure intervals. All …

The recent increasing number of experimental works leads us to review the elastic
properties and mineralogical transformations of mantle minerals. The updated data set is …

Water in the deep upper mantle can influence the properties of seismic discontinuities in the
mantle transition zone. Observations of converted seismic waves provide evidence of a 20 …

In order to evaluate the effect of H on the pressure and transition interval of the olivine‐
wadsleyite transformation, synthesis experiments were carried out in hydrous and …

The upper mantle seismic discontinuities provide important constraints on models of mantle
composition and dynamics. New observations of re-flected and converted phases from the …