SciELO - Scientific Electronic Library Online

 
vol.47 número2Investigação da continuidade do enxame de diques máficos sob as dunas da Joaquina usando magnetometria terrestreEstratigrafia, tectônica e geocronologia U-Pb (LA-ICP-MS) em zircão detrítico da faixa Rio Preto e porção norte do corredor do Paramirim, NE, Brasil índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Brazilian Journal of Geology

versão impressa ISSN 2317-4889versão On-line ISSN 2317-4692

Resumo

FRIES, Maximilian; MALAGUTTI FILHO, Walter; DOURADO, João Carlos  e  FERNANDES, Mariana Aparecida. Gravimetric survey and modeling of the basement morphology in the sedimentary thickness characterization, NE portion of Paraná Sedimentary Basin - Brazil. Braz. J. Geol. [online]. 2017, vol.47, n.2, pp.249-260.  Epub 22-Maio-2017. ISSN 2317-4889.  http://dx.doi.org/10.1590/2317-4889201720160117.

The northeast portion of the Paraná Sedimentary Basin is distinguished by structural highs as the known Pitanga Dome, an uplifted structure identified in the last century. It represents a geological and evolutionary evidence of the Paraná Sedimentary Basin and has undergone inspired studies and intense exploration surveys. This study consists of a gravimetric survey in the Pitanga Dome area, State of São Paulo, Brazil. The Bouguer gravity anomalies have been identified and related to the structural high, sedimentary thickness, and the basement morphology. Processing and enhancement techniques were used for forward modeling based on previous studies. The three models from profiles sectioning the dome have a sedimentary thickness varying from 200 to 1.250 meters. The adopted methodology has provided important results determining that the Pitanga Dome can be understood through rational 3D visualization. The area can be interpreted as an undulating basement with thinning of sedimentary rocks related to deep features (structures) in the crust/mantle limit (Moho uplift). This characteristic is confirmed by the sedimentary layer thickening present throughout the surrounding area. The results also offer important insights and support for further studies concerning the genesis and evolution of this and other uplifted structures of the Paraná Sedimentary Basin.

Palavras-chave : Paraná basin; Gravimetry; Modeling.

        · resumo em Português     · texto em Inglês     · Inglês ( pdf )