Anomalias Em Padrões De Redes De Drenagem Como Fator De Verificação De Neotectônica – Um Estudo De Caso Nas Sub-Bacias Do Rio Mamuaba-Pb

Using morphometric and geomorphic indices to assess Western São Francisco Craton neotectonic traces

“…Therefore, elevated Vf-ratio values are located on the hanging wall of the Boqueirão and Morro Redondo fault lines (CPRM, 2003a;2003b), and lower values occurred within the sedimentary basin, noticeable in the pediments and debris flow fanglomerate surfaces. Applied to the Brazilian Northeast onshore region, the index yielded similar results, identifying present tectonic control on landforms (BARBOSA et al, 2013;FURRIER, 2017), and these values are closer to the ones achieved nearby the Hellenic Arc (NTOKOS et al, 2016).…”

“…In Brazil, the morphometry of fluvial systems is one of the most common themes in fluvial geomorphology (BARROS; REIS, 2019) and the previously referenced techniques have largely been applied to investigate the correlation between geological features and the physiography of river valleys (ETCHEBEHERE et al, 2006;ROSSETTI et al, 2008;ROSSETTI, 2011;FUJITA et al, 2011;FURRIER, 2017). Moreover, morphometric and geomorphic indices were trained in Brazil in assessments of development of drainage systems and discrimination of ductile and brittle tectonics (ALVES et al, 2014), progress and growth of river catchments FURRIER, 2011), changes in river profiles (BARBOSA et al, 2013), identification and demarcation of morphotectonic features (CAMOLEZI et al, 2012), litho-structural and tectonic zoning (CHERÉM et al, 2011), and effective detection of neotectonics FURRIER, 2014;ROSSETTI, 2017). This research aims to assess whether the western São Francisco deformed cratonic foreland basin DARDENNE, 1997a;Reis et al, 2016) provided sufficient evidence to demonstrate recent tectonic activity in a rigid crustal environment.…”

Morfoestrutura e Morfotectônica no Noroeste de Minas Gerais: o >i<graben>/i< holocênico do baixo Ribeirão Cotovelo e seu enquadramento na hidrogeomorfologia regional

“…Aplicado a terrenos do litoral do Nordeste do Brasil, o índice Vf-ratio proporcionou resultados similares, suficientes para atestar o controle tectônico sobre as formas de relevo mais jovens (BARBOSA et al, 2013;FURRIER, 2017), com valores próximos àqueles calculados no entorno do Arco Helênico (NTOKOS et al, 2016).…”

“…Analogamente, índices morfométricos e geomórficos foram usados no Brasil para analisar o desenvolvimento de sistemas de drenagem e discriminação de tectônica dúctil e rúptil (ALVES et al, 2014), avanço e crescimento de bacias hidrográficas (BARBOSA; FURRIER, 2011), mudanças nos perfis longitudinais dos rios (BARBOSA et al, 2013), identificação e delimitação de feições morfotectônicas (CAMOLEZI et al, 2012), zoneamento litoestrutural e tectônico (CHEREM et al, 2011), e detecção efetiva de deformações neotectônicas (LIMA; FURRIER, 2014; ALVES; ROSSETTI, 2017).…”