Journal of the Virtual Explorer

A dynamic review electronic Earth Science journal publishing material from all continents

Volume 17 - The 750-550 Ma Brasiliano Event of South America

Edited By: Roberto Weinberg, Rudolf Trouw, Reinhardt Fuck, Peter Hackspacher

Several NeoProterozoic orogenic belts occur in southeast and south Brazil: the Araçuaí, Ribeira, Southern Brasília, Dom Feliciano and São Gabriel. They developed during the Brasiliano-Pan-African Orogeny that resulted in the amalgamation of Gondwana.

The Neoproterozoic orogenic evolution started with the consumption of the Goianides and Adamastor oceans, located at the western and southeastern sides of the São Francisco paleocontinent. Subduction generated magmatic arc suites and was followed by arc-continent and continent-continent collisions. The collisional episodes were diachronous, the oldest are recorded in the SW of the region considered, in the Apiaí Terrane (ca. 790 Ma) and in the São Gabriel Orogen (ca. 700 Ma).

They were followed by collisions in the southern Brasília Orogen, in the Apiaí Terrane (ca. 630-610 Ma) and in the Dom Feliciano Orogen (ca. 600 Ma). Then collision occurred in the Ribeira and Araçuaí Orogens in the period between 580 Ma and 520 Ma. Finally, the extensional collapse of the orogens took place from the Cambrian to Ordovician (ca. 520-480 Ma).

  • A review of the Brasiliano magmatism in southern Espírito Santo, Brazil, with emphasis on post-collisional magmatism Cristina P. De Campos, Júlio Cezar Mendes, Isabel P. Ludka, Silvia R. de Medeiros, Jorge C. de Moura, Carin Wallfass View Download PDF
  • Final stages of the Brasiliano Orogenesis in SE Brazil: U-Pb and 40Ar/39Ar evidence for overprinting of the Brasília Belt by the Ribeira Belt Tectonics P. C. Hackspacher, A. H. Fetter, W. Teixeira, E. L. Dantas, H. D. Ebert, R. A. J. Trouw, P. Vasconcelos View Download PDF
  • The lithospheric mantle as a source of magmas during orogenic processes: insights from high-K diorites in the Borborema Province and implications for continental dynamics Sérgio Pacheco Neves, Gorki Mariano View Download PDF
  • Brasiliano Orogens in Southeast and South Brazil Monica Heilbron, Antônio Carlos Pedrosa-Soares, Mário Campos Neto, Luiz Carlos da Silva, Rudolph Allard Johannes Trouw, Valdeci Janasi View Download PDF
  • Nd isotopes from the Ribeira Belt in the Rio Paraíba do Sul region, SE Brazil: significance for its Neoproterozoic evolution H. L. Roig, E.L. Dantas, P.R Meneses View Download PDF
  • The Araguaia Belt, Brazil: Part Of A Neoproterozoic Continental-Scale Strike-Slip Fault System Marco A. Fonseca, Claudinei G. de Oliveira, Hanna J. Evangelista View Download PDF
  • Structural and geochronological studies of the Médio Coreaú Domain, NE Brazil: Constraints on Brasiliano/Pan-African tectonic evolution in the NW part of the Borborema Province Ticiano J. S. dos Santos, Allen H. Fetter, Peter C. Hackspacher, William R. Van Schmus, José de A. Nogueira Neto View Download PDF

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Copyright Virtual Explorer 2011. ISSN 1441-8142.