Figure 2
From: High Pressure Metamorphism Caused by Fluid Induced Weakening of Deep Continental Crust
Phase diagram sections. (a) Pressure-Temperature section for the amphibolite sample (HA-2-17). The stability field for the observed mineral assemblage is indicated by a dashed red line. (b) Pressure-Temperature section for the dark homogeneous zone of pseudotachylyte shown in Fig. S4, contoured for garnet compositions (red lines). Although the latter assemblage is not very sensitive to temperature, both assemblages formed at a pressure near 1 GPa, and both could have formed at a temperature near 600 °C. See Methods for solid solution models and abbreviations.
