Fig. 2

modified from Trommsdorff et al. (2005). A detailed sample profile was collected from Val Ventina to Val Sissone (red rectangle). Numbers in the map correspond to the mapped isograds from Trommsdorff and Evans (1972) modified by Trümpy and Trommsdorff (1980) and this study. The coordinate grid is given in Swiss coordinates CH1903 +/LV95. b Zoom-in on the sampling profile of a with sample location corresponding coordinates presented in Table 1. Contour lines in both a and b are given in meters above sea-level (m.a.s.l.). Mineral abbreviations are presented in Table 1