Fig. 9

a P–T-t evolution and monazite ages from the Schrankogel complex in the Stubai region (Alpeiner Valley), compared to data from metapelites in the Oetztal basement to the west, as given in Rode et al. (2012). Sections of the P–T paths are labelled by age data. P–T data from Stubai metapelites and metabasites are interpreted to combine to a prograde-retrograde P–T path. Segments of the P–T path are marked: 1—Age data and minimum P estimate (~ 15 kbar, ellipsoid) from eclogites in Miller and Thöni (1995); they give maximal P at ~ 27 kbar. 2, 3, 4—Positions of EMP monazite age data reported here from Stubai. It is questionable if the metapelites have experienced the high pressures reported from eclogites (1). Stability fields for kyanite, andalusite, sillimanite after Spear (1993). Stability fields of monazite (Mnz) and allanite (Aln) at different bulk rock contents as a function of Ca wt%, and with the xenotime (Xtm) stability field (Janots et al. 2007; Spear 2010). b Frequency distribution (recalculated to percent) of the EMP-Th–U–Pb monazite ages in the Oetztal regions to the W, as reported in Rode et al. (2012). c Frequency distribution (recalculated to percent) of the EMP-Th–U–Pb monazite ages from the Stubai region (Alpeiner Valley), compared to Oetztal