Data for 40Ar/39Ar Geochronology of Meso-Cenozoic magmatism and its aqueous alteration, northern Santos Basin, South Atlantic

Two datasets are available: (1) full major and trace element geochemistry data for all samples dated in this study (analytical results produced at ActLabs Canada; (2) complete 40Ar/39Ar results for all sample steps (analyses conducted at UQ-AGES – University of Queensland Argon Geochronology in Earth Sciences – laboratory).