Fig. 4: Depth of dehydration reactions as a function of sinking velocity vsink.
From: Olivine’s high radiative conductivity increases slab temperature by up to 200K
Slab age is \({t}_{{slab}}=80\) \({Myrs}\), slab thickness \({H}_{{slab}}=120\) \({km}\). Different markers indicate the type of dehydration reaction (star: complete dehydration; triangle: partial dehydration), whereas the colors indicate the type of model (\({\varLambda }_{{rad}}=0\): blue; \({\varLambda }_{{rad}} > 0\): red). The light blue area indicates the MTZ (\(410\)–\(660\) \({km}\)). The two subplots indicate different positions of extracted P, T profiles inside the slab: (a) \(10\) \({km}\) from slab surface (Moho); (b) \(30\) \({km}\) from slab surface (coldest region within the slab corresponding to maximum hydration depth)11. Partial dehydration reactions determine the loss of 50–70% of the initial slab water content at <350 \({km}\) of depth. The remaining 30% is lost between 640 and 660 \({km}\) of depth (Fig. S13 in SM).
