SHRIMP U-Pb,  207 Pb/ 206 Pb zircon dating, and Nd isotopic signature of the Umburanas greenstone belt, northern São Francisco craton, Brazil

Bastos Leal, Luiz; Cunha, Jose; Cordani, Umberto; Teixeira, Wilson; Nutman, Allen; Menezes Leal, Angela; Macambira, Moacir

SHRIMP U-Pb, 207 Pb/ 206 Pb zircon dating, and Nd isotopic signature of the Umburanas greenstone belt, northern São Francisco craton, Brazil

Date

2003

Authors

Bastos Leal, Luiz

Cunha, Jose

Cordani, Umberto

Teixeira, Wilson

Nutman, Allen

Menezes Leal, Angela

Macambira, Moacir

Publisher

Pergamon-Elsevier Ltd

Abstract

The Gaviao block in the northern portion of the Sao Francisco craton, northeast Brazil, is one of the oldest Archean fragments of the South American platform. It underwent polycyclic evolution from very old juvenile components dated between 3400 and 3000