(a) Calcium X-ray map of garnet and the immediate symplectite rim showing the textural evidences of garnet growth and resorption sequence (same garnet grain as in Fig. 3). Concentric zones (core, mantle and rim) can be traced according to the inclusion pattern in garnet1. Note that the resorption surface (R) is characterized by contrasting Ca content in garnet1 rim and garnet2. (R’) marks the current contour of garnet. (b) Synthetic P–T path and schematic pictures of the inferred garnet growth and resorption sequence.