Effect of water on lattice thermal conductivity of ringwoodite and its implications for the thermal evolution of descending slabs


Key Points: Ringwoodite thermal conductivity is reduced by 40% due to the presence of 1.73 wt% water in the crystal structure. Lower thermal conductivity of hydrous ringwoodite might delay the breakdown of hydrous phases hosted in a subducting slab. Hydrous ringwoodite acts as a heat propagation barrier, supporting preservation of hydrous minerals down to the lower mantle.

Geophysical Research Letters