FIG. 12. Summary of the SHRIMP ages obtained in this study compared to conventional U-Pb zircon ages and Rb-Sr bulk-rock ages of the Estrela Granitic Complex, the Old Salobo Granite, the Itacaiúnas Granite, Re-Os ages of molybdenite, and Pb-Pb model ages of bornite-chalcopyrite-magnetite mineralization at Salobo, and the host metavolcanic rocks of the Igarapé Bahia deposit.