Geochronology of calc-alkaline and tholeiitic dyke swarms of Tandilia, Rio de la Plata craton, and their role in the paleoproterozoic tectonics - Teixeira, Wilson; Pinese, José Paulo Peccinini; Iacumin, M.; Girardi, Vicente Antonio Vitorio; Piccirillo, Enzo Michele; Echeveste, H.; Ribot, A.; Fernandez, R.; Renne, Paul; Heaman, Larry M. (South American Symposium on Isotope Geology, 2001)