Sm-Nd, Rb-Sr and K-Ar age constraints of the el Molle and Barroso plutons, western sierra de San Luis, Argentina - Sato, Anna María; Gonzalez, Pablo D.; Petronilho, Liliane Aparecida; Llambias, Eduardo J.; Varela, Ricardo; Basei, Miguel Angelo Stipp (South American Symposium on Isotope Geology, 2001)