Fig. 8

Garnet–clinopyroxene–phengite thermobarometry of the Lanzada metagabbroic eclogite. See text for explanation. Mineral component abbreviations from Kretz (1983). Circle approximate ‘best-fit’ intersection generated by independently calibrated thermobarometers. Shaded area error box for equilibria A and B. Facies boundaries from Okamoto and Maruyama (1999). P–T conditions estimated for high-P metamorphism in other Penninic ophiolitic units in the Alps: AL Zermatt-Saas Zone–Allalin Gabbro (Bucher and Grapes 2009), AV Avers Bundnerschiefer (Ring 1992), LC Lago di Cignana Unit (Reinecke 1991), LZ Lanzo peridotite (Pelletier and Muntener 2006), MV Monviso Complex (Messiga et al. 1999), SM Zermatt-Saas Zone–St Marcel (Martin et al. 2008), TE Tauern Eclogite Zone (Hoschek 2007), TG Tauern Glockner Nappe (Dachs and Proyer 2001), ZS Zermatt-Saas Zone (Angiboust et al. 2009)