A two-phase model for the description of the influence of cracks on the P- and S-wave velocities in dry and saturated rock samples

Complex Geophysical Investigations under Extreme P,T–Conditions at Zentralinstitut für Physik der Erde (ZIPE) (1970–1990)

“…The results were published among other things at the meeting of the European High Pressure Research Group at Potsdam (see Figure 17). The material system investigated consisted mainly of the elements relevant to the Earth's core: iron, nickel and manganese in combination with Sulphur [53][54][55][56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71]. The verification of the pressure and temperature stability of the various phases of the elements mentioned or their sulphides and the determination of possible phase transitions under the extreme conditions required the development and manufacture of special high-pressure equipment.…”