A perovskitic lower mantle inferred from high-pressure, high-temperature sound velocity data

@article{Murakami2012APL,
  title={A perovskitic lower mantle inferred from high-pressure, high-temperature sound velocity data},
  author={Motohiko Murakami and Yasuo Ohishi and Naohisa Hirao and Kei Hirose},
  journal={Nature},
  year={2012},
  volume={485},
  pages={90-94}
}
The determination of the chemical composition of Earth’s lower mantle is a long-standing challenge in earth science. Accurate knowledge of sound velocities in the lower-mantle minerals under relevant high-pressure, high-temperature conditions is essential in constraining the mineralogy and chemical composition using seismological observations, but previous acoustic measurements were limited to a range of low pressures and temperatures. Here we determine the shear-wave velocities for silicate… 
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