Neoproterozoic magmatism and high-grade metamorphism in the Goiás Massif: New LA-MC-ICMPS U-Pb and Sm-Nd data and implications for collisional history of the Brasília Belt

The main geological characteristics of the Uruaçu Complex, as well as the new U-Pb crystallization and provenance ages discussed in this work, are analogous to those observed in the Anápolis-Itauçu Complex, exposed in the southern Brasília Belt. This may suggests the correlation between both complexes, resulting in a long granulitic belt developed to the east of the Goiás Magmatic Arc during the main collisional stage of evolution of the Brasília Belt. High-grade metamorphism and associated igneous intrusions represented mainly by metagabbros and metagranites are, therefore, a conspicuous feature of the final stages of evolution of the Brasília Belt and might be related to delamination, uplift and extension following ocean closure and continental collision.