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Swiss Journal of Geosciences
Fig. 10 | Swiss Journal of Geosciences

Fig. 10

From: Thermal evolution of a Variscan syn-orogenic intracontinental basin (Servoz basin, Western Alps): RSCM geothermometry and geochronology

Fig. 10

Geodynamic evolution of the Servoz basin. A 370–350 Ma: Back-arc rifting induced a crustal thinning and a high heat mantle flux leading to the partial melting of the crust, the formation of a bimodal magmatism, and a high-thermal gradient in the metagreywackes forming the F1. B 350–330 Ma: Transpression during the continental collision inverted the basin and drained melts from the lower crust forming the Pormenaz (P) and Montées-Pélissier (MP) granites which induced contact metamorphism. C 330–310: The crustal dextral deformation formed a pull-apart basin in the western side of the Arve fault (AF) allowing the sedimentation of the F2 phyllites while the eastern side was exhumed. D 310–295 Ma: late-orogenic extension in a transtensional setting forming the late basins and the F3

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