"The Variscan [340 – 260 Ma, 1] Corsica-Sardinia. Batholith (C-SB) emplaced discordantly across the orogenic. structure, from the roots zone to the Gondwana foreland.. Despite the scarcity ( 900°C), low fH2O and fO2. conditions [5].. NdDM model ages of post-300 Ma granites in south. Sardinia are in the range 1600 - 1700 Ma, about 1 Ga older. than those calculated in Corsica [6]. This implies a older. lithosphere, probably accreted at the northern margin of. Gondwana (S Sardinia) in early Paleozoic. The observation. that this part of the chain never reached a significant crustal. thickness during the Variscan event (i.e., > 40 km) support the. hypothesis that granulites formed before the Carboniferous."