Reconciling the Post-Perovskite Phase With Seismological Observations of Lowermost Mantle Structure

The discovery of post-perovskite (pPv), the high pressure polymorph of (Mgx,Fe1-x)SiO3 perovskite (Pv), may have profound implications for the thermal, chemical and dynamical structure of the deep Earth, if it can be demonstrated that pPv currently exists in the lower mantle. The requisite basis for such a demonstration is seismological observation of… CONTINUE READING