Ultrahigh-pressure acoustic wave velocities of SiO 2-Al 2 O 3 glasses up to 200 GPa

  title={Ultrahigh-pressure acoustic wave velocities of SiO 2-Al 2 O 3 glasses up to 200 GPa},
  author={Itaru Ohira and Motohiko Murakami and Shinji Kohara and Koji Ohara and Eiji Ohtani},
Extensive experimental studies on the structure and density of silicate glasses as laboratory analogs of natural silicate melts have attempted to address the nature of dense silicate melts that may be present at the base of the mantle. Previous ultrahigh-pressure experiments, however, have been performed on simple systems such as SiO2 or MgSiO3, and experiments in more complex system have been conducted under relatively low-pressure conditions below 60 GPa. The effect of other metal cations on… CONTINUE READING


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