Investigação sobre deformação neotectônica no lineamento Guapiara, região de Ourinhos, Fartura-SP e Santo Antonio da Platina - PR

• Autor(a) principal: Pelaes, Igor [UNESP]
• Data de Publicação: 2013
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/120471
• topic: Geologia estrutural; Diques (Geologia); Tectonica de placas; Geomorfologia; Falhas (Geologia); Rochas - Deformação; Ourinho (SP); Santo Antônio da Platina (PR)

This study was done in the SW of the state of São Paulo and in the NE of the state of Paraná along the Guapiara Lineament, with a NW-SE direction, located on the boundary of the Ponta Grossa Arch. This lineament is characterized by a swarm of diabase dikes that belong to the Mesozoic period, which follow the main joints and fault planes developed during the rupture of the Gondwana Continent. Using thematic maps and field work, an important control in the geomorphologic features was noticed, conditioned by joints and faults which are responsible for alignments striking mainly NW-SE, and secondarily to the NE-SW direction. The major structural features mapped were joints and normal, strike-slip right-lateral, strike-slip leftlateral and reverse faults that deform sedimentary rocks in the Paraná Basin and diabase, basaltic and rhyolites dikes of the Serra Geral Formation. Eight dikes were mapped seven of them are in the NW-SE direction and one strikes NNW-SSW. The analysis of the faults demonstrates more than one deformational event into the evolutionary framework. The joints and faults deforming the dikes and basaltic rocks indicate post-Mesozoic tectonic activity, related to the rupture of the Gondwana Continent. Some of these structures denoted evidence of neotectonic deformation in the Guapiara Lineament