Crustal evolution between 2.0 and 3.5 Ga in the southern Gavião block (Umburanas-Brumado-Aracatu region), São Francisco Craton, Brazil: A 3.5-3.8 Ga proto-crust in the Gavião block?

Marilda Santos-Pinto (1) , Jean-Jacques Peucat (2) , Hervé Martin (3) , J.S.F. Barbosa , C. Mark Fanning (4) , Alain Cocherie (5) , Jean-Louis Paquette (3)

1 UEFS-Dep. Ciências Exatas
2 Terre, Temps, Traçage
3 LMV - Laboratoire Magmas et Volcans
4 RSES - Research School of Earth Sciences [ANU, Canberra]
5 BRGM - Bureau de Recherches Géologiques et Minières

Mots clés: SHRIMP zircon ages; In-situ monazite ages (EPMA; LA-ICPMS); Sm-Nd; Archean and Paleoproterozoic; Gavião block; Bahia-Brazil

Domaines: Géochimie; Milieux et Changements globaux

Marilda Santos-Pinto, Jean-Jacques Peucat, Hervé Martin, J.S.F. Barbosa, C. Mark Fanning, et al.. Crustal evolution between 2.0 and 3.5 Ga in the southern Gavião block (Umburanas-Brumado-Aracatu region), São Francisco Craton, Brazil: A 3.5-3.8 Ga proto-crust in the Gavião block?. Journal of South American Earth Sciences, 2012, 40, pp.129-142. ⟨10.1016/j.jsames.2012.09.004⟩. ⟨hal-00755429⟩