Switch of Mesozoic extensional tectonic style in the Lusitanian basin (Portugal): Insights from magnetic fabrics

► First magnetic fabric data to characterize the Lusitanian basin Mesozoic evolution. ► Magnetic fabric data, analysis of brittle mesostructures and mapped faults comparison. ► Triassic and Upper Jurassic units show high variability of strain axes orientation. ► We interpret a switch of the stretching direction between the Triassic and Jurassic.