Fig. 5

Updated comparison between maximum metamorphic P–T conditions determined from exhumed eclogites and blueschists (Whitney et al. 2020) and the current D80 models. Solid lines show slab top temperatures for the coldest oceanic subduction zone (Tonga), one of the coldest continental subduction zones (Tohoku), and two of the warmest subduction zones (Cascadia and Mexico). Lawsonite eclogite data is denoted by the green symbols and lawsonite blueschists in solid blue. Open small circles are from the data base of Penniston-Dorland et al. (2015) with minor modifications as discussed in Whitney et al. (2020) and as made available in their material contained in the zenodo repository referenced in the data availability statement Table S4. The quartz-coesite (Qz-Coe) and lawsonite-out (Law-out) transitions are shown for reference