The role of intracontinental deformation in supercontinent assembly : insights from the Ribeira Belt, Southeastern Brazil (Neoproterozoic West Gondwana)
Vinicius T. Meira, Antonio Garcia-Casco, Caetano Juliani, Renato P. Almeida, Johann Hans
ARTIGO
Inglês
Agradecimentos: The first author is thankful to CAPES and CNPq for the PhD scholarships. Fernando Bea and Pilar Montero are thanked for their help with SHRIMP analysis and data treatment. Thaís Hyppolito is acknowledged for field assistance and fruitful discussions. Lucas Schiavetti is thanked for...
Ver mais
Agradecimentos: The first author is thankful to CAPES and CNPq for the PhD scholarships. Fernando Bea and Pilar Montero are thanked for their help with SHRIMP analysis and data treatment. Thaís Hyppolito is acknowledged for field assistance and fruitful discussions. Lucas Schiavetti is thanked for field assistance. Thanks are due to the COTEC-IF and workers of the Parque Estadual da Serra do Mar and Parque Estadual de Ilhabela for allowing access and sampling in the conservation area. This research was financially supported by São Paulo Research Foundation (FAPESP, Grant 2012/15462-7). This is the IBERSIMS publication no 23. Three anonymous reviewers are acknowledged for substantial improvements in the early version of the manuscript. Klaus Mezger is thanked for the careful editorial handling
Ver menos
Abstract: In this study, we challenge the multiple collision model for the tectonic evolution of the Neoproterozoic Ribeira Belt in Southeastern Brazil. New U–Pb SHRIMP data reveal Palaeoproterozoic (2153 ± 15 Ma) and Cryogenian (783 ± 6 and 768 ± 8 Ma) granitic rocks in the Embu Domain, and...
Ver mais
Abstract: In this study, we challenge the multiple collision model for the tectonic evolution of the Neoproterozoic Ribeira Belt in Southeastern Brazil. New U–Pb SHRIMP data reveal Palaeoproterozoic (2153 ± 15 Ma) and Cryogenian (783 ± 6 and 768 ± 8 Ma) granitic rocks in the Embu Domain, and detrital zircon data of metasedimentary units from the Embu and Costeiro domains suggest a coherent tectonic evolution for the whole Ribeira Belt. Rather than by multiple collisions, these data are best explained by a simpler tectonic model involving continent (craton)-volcanic arc collisions in the Dom Feliciano and Brasilia belts that led to intracontinental crustal thickening of the adjacent thinned hinterland (Ribeira Belt) at ~640–610 Ma, followed by widespread post-collisional magmatism and rift-related sedimentation at ~600–540 Ma. We suggest that intracontinental orogeny is a relevant process during supercontinent assembly, as illustrated here by the evolution of significant parts of the Brasiliano orogen
Ver menos
COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
2012/15462-7
Fechado
DOI: https://doi.org/10.1111/ter.12149
Texto completo: https://onlinelibrary.wiley.com/doi/10.1111/ter.12149
The role of intracontinental deformation in supercontinent assembly : insights from the Ribeira Belt, Southeastern Brazil (Neoproterozoic West Gondwana)
Vinicius T. Meira, Antonio Garcia-Casco, Caetano Juliani, Renato P. Almeida, Johann Hans
The role of intracontinental deformation in supercontinent assembly : insights from the Ribeira Belt, Southeastern Brazil (Neoproterozoic West Gondwana)
Vinicius T. Meira, Antonio Garcia-Casco, Caetano Juliani, Renato P. Almeida, Johann Hans
Fontes
|
Terra nova (Fonte avulsa) |