Ages and tectonic setting of alkaline-peralkaline granitoids of Paraná anda Santa Catarina States, southern Brazil - Siga Júnior, Oswaldo; Basei, Miguel Angelo Stipp; Reis Neto, José Manoel dos; Harara, Ossama Mohamed Milad; Passarelli, Claudia Regina; Prazeres Filho, Hélcio José dos; Weber, Werner; Machiavelli, Adilson (South American Symposium on Isotope Geology, 1997)