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Sm-Nd whole-rock and U-Pb zircon geochronological studies of the basement gneisses of Ceara (NW Borborema Province, NE Brazil) have identified two major pulses of Paleoproterozoic crustal growth(More)
Abstract New U–Pb data reveal that during the mid-Cambrian the central part of West Gondwana was still undergoing a high-grade tectonometamorphic event corresponding to collision. The studied area is(More)
The Rio Negro-Juruena Province (RNJP) occupies a large portion of the western part of the Amazonian Craton and is a zone of complex granitization and migmatization. Regional metamorphism, in general,(More)