Constraints on the presence of post-perovskite in Earth's lowermost mantle from tomographic-geodynamic model comparisons

- Meaningful comparisons of tomographic model SP12RTS with geodynamic models.
- Focus on high VS/VP ratio and negative VS-VC correlation in lowermost mantle.
- Areal extent of post-perovskite has a dominant influence on these properties.
- SP12RTS is best fit by a pPv-bearing CMB, implying the presence of pPv inside LLVPs.
- Indicate potential for constraining Clapeyron slope of the phase transition.