“…9a) and the distinctive array of 208 Pb/ 204 Pb vs. 207 Pb/ 204 Pb, displaced from the core data (Fig. 9b), possibly reflect the heterogeneous nature of the fluid and the residual melts (e.g., Srogi and Lutz, 1996) during the final stage of consolidation of the granitic mass. The involvement of a hydrothermal fluid is also suggested by sporadic high Cs and B concentrations in the megacrysts Gagnevin et al, in press, by the abundance of tourmaline clots in the main monzogranite facies of the MC pluton and B isotopic data (Tonarini et al, 1998;Dini, 2003).…”