@inproceedings{inproceedingsecc890ba, title = {U-PB and SM-ND isotopic studies of Campo Alegre and Guaratubinha volcanosedimentary basins, southern region}, author = {Siga JĂșnior, Oswaldo and Basei, Miguel Angelo Stipp and Sato, Kei and Cordani, Umberto G. and Citroni, Sergio Brandolise}, year = {2000}, publisher = {CPRM}, booktitle = {International Geological Congress} }