U-PB zircon geochronology and SM-ND isotopic composition of the orthogneisses from Pão de Açúcar complex, Borborema Province-Northeastern Brazil - Accioly, Ana Claudia de Aguiar; Santos, Carlos A. dos; Santos, Edilton Jose dos; Brito Neves, Benjamim Bley de; Rodrigues, Joseneusa Brilhante; McReath, Ian (South American Symposium on Isotope Geology, 2012)