U–Pb SHRIMP zircon ages of Ediacaran-Cambrian granitic bodies in central Brazil: Implications for the tectonic evolution of the Araguaia belt

2020 ◽  
Vol 104 ◽  
pp. 102804
Author(s):  
Paulo Sergio de Sousa Gorayeb ◽  
Umberto Giuseppe Cordani ◽  
Juvenal Juarez Andrade da Silva Neto ◽  
Kei Sato ◽  
Victor Camara Maurer
Keyword(s):  
Tectonic Evolution ◽  
Central Brazil ◽  
Shrimp Zircon

scholarly journals The tectonic evolution of the Neoproterozoic Brasília Belt, central Brazil: a geochronological and isotopic approach

2016 ◽  
Vol 46 (suppl 1) ◽  
pp. 67-82 ◽  
Author(s):  
Márcio Martins Pimentel
Keyword(s):  
Tectonic Evolution ◽  
Oceanic Lithosphere ◽  
Passive Margin ◽  
Magmatic Arc ◽  
Provenance Studies ◽  
Continental Arcs ◽  
Central Brazil ◽  
Tectonic Settings ◽  
Subduction Magmatism ◽  
Final Closure

ABSTRACT: The Brasília Belt is one of the most complete Neoproterozoic orogens in western Gondwana. Rapid progress on the understanding of the tectonic evolution of the belt was achieved due to new U-Pb data, combined with Sm-Nd and Lu-Hf analyses. The evolution of the Brasília orogen happened over a long period of time (900 - 600 Ma) involving subduction, magmatism and terrain accretion, as a result of the consumption of the Goiás oceanic lithosphere. Provenance studies, based on U-Pb zircon data, indicate that the sedimentary rock units record different tectonic settings and stages of the evolution of the orogen. The Paranoá and Canastra groups represent passive margin sequences derived from the erosion of the São Francisco Craton. The Araxá and Ibiá groups, however, have dominant Neoproterozoic detrital zircon populations, as young as 650 Ma, suggesting derivation from the Goiás Magmatic Arc. The Goiás Magmatic Arc represents a composite arc terrain, formed by the accretion of older (ca. 0.9 - 0.8 Ga) intraoceanic island arc(s), followed by more evolved continental arcs. It extends for several thousand kilometers, from SW Goiás, through NE Brazil and into Africa. Metamorphism took place between 650 - 630 Ma reflecting final closure of the Goiás Ocean and continental collision.

The tectonic evolution of the Neoproterozoic Brasília Belt, central Brazil, based on SHRIMP and LA-ICPMS U–Pb sedimentary provenance data: A review

2011 ◽  
Vol 31 (4) ◽  
pp. 345-357 ◽  
Author(s):  
Márcio M. Pimentel ◽  
Joseneusa B. Rodrigues ◽  
Maria Emilia S. DellaGiustina ◽  
Sergio Junges ◽  
Massimo Matteini ◽  
...  
Keyword(s):  
Tectonic Evolution ◽  
Central Brazil ◽  
Sedimentary Provenance ◽  
Provenance Data

The Paleoproterozoic Campinorte Arc: Tectonic evolution of a Central Brazil pre-Columbia orogeny

2014 ◽  
Vol 251 ◽  
pp. 49-61 ◽  
Author(s):  
Pedro Filipe de Oliveira Cordeiro ◽  
Claudinei Gouveia de Oliveira ◽  
Maria Emília Schutesky Della Giustina ◽  
Elton Luis Dantas ◽  
Roberto Ventura dos Santos
Keyword(s):  
Tectonic Evolution ◽  
Central Brazil

Tectonic evolution of the Brasília Belt, Central Brazil, and early assembly of Gondwana

2008 ◽  
Vol 294 (1) ◽  
pp. 197-210 ◽  
Author(s):  
C. M. Valeriano ◽  
M. M. Pimentel ◽  
M. Heilbron ◽  
J. C. H. Almeida ◽  
R. A. J. Trouw
Keyword(s):  
Tectonic Evolution ◽  
Central Brazil
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