Ediacaran-Cambrian far-field hydrothermal event in the southeast of the São Francisco Craton, Brazil: Evidence from zircon U-Pb SHRIMP, trace elements, Lu-Hf and oxygen isotopes

Iron formation-bearing sequences from the Guanhães Tectonic Block and Southern Espinhaço Belt of the Southeastern São Francisco Craton, were affected by the Ediacaran-Cambrian Brasilian Orogeny, when the Guanhães Block was upthrusted onto Statherian metasedimentary units of the Lower Espinhaço Supergroup. The iron formation contain a number of hydrothermal high-grade iron ore bodies (e.g. Horto-Baratinha, Cuité, Morro Escuro and Morro do Pilar...