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| CAXITO,FABRÍCIO A.; UHLEIN,ALEXANDRE; MORALES,LUIZ F.G.; EGYDIO-SILVA,MARCOS; SANGLARD,JULIO C.D.; DIAS,TATIANA G.; MENDES,MONICA C.O.. |
| The Rio Preto fold belt borders the northwestern São Francisco craton and shows an exquisite kilometric doubly-vergent asymmetric fan structure, of polyphasic structural evolution attributed exclusively to the Brasiliano Orogeny (∼600-540 Ma). The fold belt can be subdivided into three structural compartments: The Northern and Southern compartments showing a general NE-SW trend, separated by the Central Compartment which shows a roughly E-W trend. The change of dip of S2, a tight crenulation foliation which is the main structure of the fold belt, between the three compartments, characterizes the fan structure. The Central Compartment is characterized by sub-vertical mylonitic quartzites, which materialize a system of low-T strike slip shear zones... |
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Palavras-chave: Brasiliano Orogeny; Doubly-vergent fan; Rio Preto fold belt; São Francisco craton; Structural analysis. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301101 |
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