What are you asking to have explained, the science? Like, how seismic waves propagate at different speeds through materials of different densities? Or how the o

What are you asking to have explained, the science? Like, how seismic waves propagate at different speeds through materials of different densities? Or how the observed propagation of seismic waves through the planet after multiple earthquakes had anomalies that matched those predicted in the presence of "wet" (hydrous) ringwoodite? Or how they created ringwoodite in the lab and subjected it to temperatures and pressures like those that might be found in the mantle?