Located along the Ionian coast, the Ali Unit is part of the Peloritani Mountain chain, tectonically covering the Fondachelli Unit and underlaying the Mandanici Unit. The Ali Unit is composed of Paleozoic basement, which was affected by a low-grade Variscan metamorphism, and a Mesozoic cover. Both were further affected by a low-grade Alpine metamorphism. The stratigraphic succession was strongly deformed by Alpine tectonics.
