Early to late Neoproterozoic subduction-accretion episodes in the Cariris Velhos Belt of the Borborema Province, Brazil: Insights from isotope and whole-rock geochemical data of supracrustal and granitic rocks

The Cariris Velhos Belt is an unique domain of the Borborema Province, Brazil, because it presents magmatic and metamorphic lithotectonic associations spanning all the Neoproterozoic. In this study, we investigate the main sources of its major supracrustal sequence (i.e. São Caetano Complex) as well as genetic aspects of a later intrusive granitic body, the São Pedro Stock. Detrital U-Pb zircon determinations for the supracrustal rocks are...