Application of U-Pb and Sm-Nd geochronology to understanding the geotectonic history of the Borborema Province, NE Brazil and its implications for the evolution of West Gondwana - Van Schmus, William Randall; Brito Neves, Benjamim Bley de; Hackspacher, Peter; Babinski, Marly; Fetter, Allen Hutcheson; Dantas, Elton Luiz (South American Symposium on Isotope Geology, 1997)