Neoarchean, Rhyacian and Neoproterozoic units of the Saquinho region, eastern Rio Piranhas-Seridó domain, Borborema Province (northeastern Brazil): implications for the stratigraphic model
- Rogério Cavalcante
- Vladimir Cruz Medeiros
- Alan Pereira Costa
- Jaziel Martins Sá
- Roberto Ventura Santos
- Joseneusa Brilhante Rodrigues
- Alexandre Ranier Dantas
- Marcos Antonio Leite Nascimento
- André Luiz Carneiro Cunha
DOIAbstract
Aeromagnetic, petrographic and isotopic data coupled with information obtained from a deep stratigraphic hole (440 m), shallow drillings (<100 m), and field data from the surroundings of the Saquinho iron mine in the Rio-Piranhas-Seridó domain of the Borborema Province, northeastern Brazil, allowed to identify a Neoarchean unit while providing a better understanding of the stratigraphy of the Jucurutu Formation, the host of the iron mineralization, and its basement. The drill hole allowed differentiating three compartments (upper, intermediate and lower). The upper compartment consists of paragneisses/schists, marbles and banded iron formations (top to bottom, respectively) correlated to the Jucurutu Formation (Seridó Group). The marbles pr...
Add to ORKG