The Barrovian metamorphism of the Lepontine dome is manifested by isograds that cross-cut tectonic nappe contacts, which commonly interpreted as occurred after emplacement. However, pervasive mineral and stretching lineation in amphibolite facies, associated with top-to-foreland shearing, suggests peak conditions are coeval nappe-overthrusting. Here, we combine mapping U-Pb zircon dating to bet...

The Paramirim Aulacogen was filled by the Espinhaço and São Francisco supergroups in period from 1.75 to 0.69 Ga, suffered partial inversion during Ediacaran. In northern sector of intracontinental domain Araçuaí-WestCongo Orogen, six compressive deformational phases were interpreted associated with frontal Aulacogen. Three structural domains identified: Jacaraci Fold-Thrust Belt, Caetité Nappe...

Metamorphic Core Complexes (MCCs) form when a thickened domain with a low-strength lower crust is submitted to extension. These structures are characteristic of post-orogenic extension, and field observations suggest that several MCCs rework a crustal nappe-stack emplaced before extension begins. These MCCs therefore develop within heterogeneous crusts that contain pre-existing dipping heteroge...