@inproceedings{inproceedings332ebe33, title = {U-Pb (zircon) ages of metabasic rocks of the Água Clara formation in the Araçaiba region-São Paulo (Brazil): preliminary data}, author = {Weber, Werner and Siga Júnior, Oswaldo and Sato, Kei and Basei, Miguel Angelo Stipp and Reis Neto, José Manoel dos}, year = {2003}, publisher = {CBPM/IRD}, booktitle = {South American Symposium on Isotope Geology} }