The Alto Moxotó Terrane is one of the best-preserved Paleoproterozoic crustal segments of the Borborema Province and shows a close correlation with basement domains of the Central African Fold Belt. Here, we review geochemical and isotopic data of Neoarchean and Paleoproterozoic rocks within the terrane and their implications for the crustal evolution of western Gondwana. The lithospheric framework of the terrane consists of three main tectono-magmatic stages: i) Neoarchean (ca. 2.6 Ga) crustal accretion with TTG juvenile injections, consisting of calcic, magnesian, meta- to peraluminous magmas derived from a basaltic oceanic crust that likely experienced high-pressure conditions; ii) Rhyacian-Orosirian (ca. 2.1 – 1.9 Ga) tholeiitic mafic-ultramafic and calc-alkaline series Cordilleran-related granitic and gneissic rocks; and iii) Statherian-Calymmian within-plate magmatism (ca. 1.6 Ga), with granitic rocks that correspond to A-type ferroan magmas, generated via partial melting of a continental source. The presence of older events within the Alto Moxotó Terrane enables correlation with basement domains within the Borborema Province and other Neoproterozoic orogens of Gondwana. These correlations strengthen the role of the province Paleoproterozoic domains in sspaleogeographic reconstructions of the Nuna/Columbia supercontinents.

You do not have access to this content, please speak to your institutional administrator if you feel you should have access.