Multiple episodes of Late Paleozoic Cu-Au mineralization in the Chatkal-Kurama terrane: New constraints from the Kuru-Tegerek and Bozymchak skarn deposits, Kyrgyzstan

•New geochronological data of the skarn Cu-Au mineralization in the Chatkal region is provided.•Four pulses of Cu-Au mineralization in the Chatkal-Kurama region are identified.•A close relationship between the magmatic arc setting and the scale and style of Cu-Au mineralization are revealed.