Abstract
Abstract The Ceara Central Domain of the Borborema Province is a key tectonic domain within the 5000 km-long West Gondwana Orogen, which extends from Algeria in Africa to Central Brazil. Igneous rocks of the Tamboril-Santa Quiteria Complex, investigated in this study, record a long-lived history of convergent magmatism and crustal anatexis. SHRIMP U-Pb dating and Hf-O isotope analyses of zircons from granitoids and migmatites, coupled with whole-rock Sr-Nd isotopes were used to constrain the evolution of this long-lived continental margin. Magmatism can be divided into three main periods: i) an early period comprising essentially juvenile arc magmatism at ca. 880–800 Ma and continuing to 650 Ma as evidenced indirectly by detrital zircons from syn-orogenic deposits, ii) a more mature arc period at ca. 660–630 Ma characterized by hybrid mantle–crustal magmatic rocks, and iii) crustal anatexis at 625–618 Ma continuing until ca. 600 Ma. Detrital zircons with mantle values of δO 18 (
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