@inproceedings{inproceedingsf002a1a4, title = {The ages of crystallization and metamorphism of the Passira anorthosite complex-Borborema Province-northestern Brazil}, author = {Accioly, Ana Claudia de Aguiar and McReath, Ian and Santos, Edilton José dos and Guimarães, Ignez de Pinho and Santos, Almany Costa}, year = {2003}, publisher = {CBPM/IRD}, booktitle = {South American Symposium on Isotope Geology} }