The Western Domain of the Magallanes Fold-and-Thrust Belt (MFTB) between 52°-54°S is part a poorly studied hinterland region southernmost Andean Cordillera. This domain consists NNW-SSE trending tectonic slices pre-Jurassic basement units and Upper Jurassic-Lower Cretaceous ophiolitic complexes volcano-sedimentary successions Rocas Verdes Basin (RVB). New detrital zircon U–Pb ages metatuffs met...

The behaviour of the phengite 40 Ar/ 39 Ar system has been explored at different scales on Sifnos and Syros, two key islands Upper Cycladic Blueschist (UCB). These expose well-preserved eclogites blueschists that were exhumed via extensional collapse Aegean subduction/accretionary wedge during Eocene Miocene. Both record switch from convergence to extension a nappe-scale thermal-kinematic rewor...