Early proterozoic calc-alkaline and middle proterozoic tholeiitic dyke swarms from central-eastern Argentina;: petrology, geochemistry, Sr-Nd isotopes and tectonic implications - Iacumin, M.; Piccirillo, Enzo Michele; Girardi, Vicente Antonio Vitorio; Teixeira, Wilson; Bellieni, Giuliano; Echeveste, H.; Fernandez, R.; Pinese, José Paulo Peccinini; Ribot, A. (Journal of Petrology, 2001)