TY JOUR TI Thermodynamics of deep geophysical media KW thermodynamics KW properties of geomaterials KW lower-mantle properties KW Earth's interior. JO Russian Journal of Earth Sciences AU Pankov, V.L. AU Ullmann, W.. AU Heinrich, R.. AU Kracke, D.. PY 1998 IS 1 PB Geophysical Center of the Russian Academy of Sciences