publicações 40Ar/39Ar and (U-Th)/He Dating of Weathered Landsurfaces on the Rifted Continental Margin of Southern Brazil Documento Geochronologicalnvestigations on the granulite facies rocks of the Strangways Ranges, central Australia Documento High-resolution 40Ar/39Ar geochronology of volcanic rocks from the Paraná Igneous Province, Brazil: implications for extrusion rates and magmatic emplacement processes Documento