Fig. 5From: The relation between peak metamorphic temperatures and subsequent cooling during continent–continent collision (western Central Alps, Switzerland)K–Ar data of Frank and Stettler (1979, FS79) and Ar–Ar data of Kirschner et al. (2003, K03) in a diagram of mica composition against apparent age. The trends of the samples that belong to metasediments of the Doldenhorn Nappe indicate an upper intercept at 14 and 21 Ma with 100% illite-2MBack to article page