Porphyry deposits do not generally have any requisite structural controls for their formation; although major faults and lineaments are associated with some. The presence of intra-arc fault systems are beneficial, as they can localize porphyry development. Furthermore, some authors have indicated that the occurrence of intersections between continent-scale traverse fault zones and arc-parallel structures are associated with porphyry formation. This is actually the case of Chile's Los Bronces and El Teniente porphyry copper deposits each of which lies at the intersection of two fault systems.