Strain fabric analysis applied to hydrothermal ore deposits emplaced during changing geodynamical conditions (Infiernillo and Las Picazas, San Rafael Massif, Argentina)

► The tectonic regime is confirmed as major factor in controlling mineralization style. ► Porphyry emplacement is confirmed as occurring at the end of an orogeny. ► Strain fabrics help to discriminate deposits placed under different tectonic settings. ► Strain fabrics help to identify stages during the hydrothermal system evolution.