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This paper obtains numerous U–Pb detrital zircon ages obtained from the Paleozoic–Triassic sandstones of the Parnaíba Basin. The resulting spectra enable us to distinguish three common age populations: Paleoproterozoic, Stenian–Tonian (mainly between 1100 and 900 Ma) and Late Neoproterozoic. Minor contributions are observed from Archean, Paleozoic (mainly Cambrian) and Mesoproterozoic sources. Differences are only highlighted by variances in the relative abundances of each age population within the stratigraphic units. The presence of metamorphic phases, schists clasts and some diagnostic heavy minerals suggest that the Neoproterozoic mobile belts to the east and west of the basin are potential source areas....

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