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Previous issue date: 2016-03-08 / Processos end?genos recentes proporcionam din?mica ? litosfera e geram as mais variadas formas de relevo, mesmo em ?reas de margens continentais passivas, como ? o caso da ?rea de pesquisa deste trabalho, localizada no Nordeste brasileiro. A reativa??o das estruturas do embasamento pr?-cambriano, ap?s a separa??o entre a Am?rica do Sul e ?frica no Cret?ceo, teve um papel importante na evolu??o de suas bacias, o que proporcionou formas de relevo variadas. Estas caracter?sticas morfodin?micas podem ser facilmente percebidas nos sedimentos de borda das bacias marginais, que apresentam fortes ind?cios dessas reativa??es. O objetivo deste trabalho ? investigar a influ?ncia dos processos morfotect?nicos na estrutura??o da paisagem nos sedimentos da Bacia Para?ba. Para tanto foram utilizados dados aeromagn?ticos de alta resolu??o, imagens da Shuttle Radar TopographicMission-SRTM, dados geol?gicos estruturais, dados de po?os profundos e dados geol?gicos de campo. Nos resultados foi observado que algumas estruturas conhecidas no embasamento da Bacia Para?ba coincidem com os lineamentos magn?ticos e topogr?ficos interpretados como reativa??es de falhas do P?s-Mioceno. A atividade neotect?nica ocorrida na Bacia Para?ba teve a capacidade de reorganizar a deposi??o dos sedimentos e de dominar os padr?es das formas de relevo. Dados estruturais adquiridos nas unidades litoestratigr?ficas mostram evid?ncias de atividade tect?nica associada ? deposi??o e eros?o de sedimentos do final do Cret?ceo at? o presente. Isto indica que a deposi??o dos sedimentos p?s-cret?ceos foi influenciada por reativa??es de estruturas do embasamento pr?-cambriano nesta por??o da margem continental brasileira. / Recent endogenous processes provide dynamic movements in the lithosphere and generate the
varied forms of relief, even in areas of passive continental margins, such as the research area
of this work located in northeastern Brazil. The reactivation of Precambrian basement
structures, after the breakup between South America and Africa in the Cretaceous played an
important role in the evolution of basins, which provided generated forms of relief. These
morphodynamic characteristics can be easily observed in marginal basins that exhibit strong
evidence fault reactivations. The purpose of this study is to investigate the influence of
morphotectonic processes in the landscape structuring of Para?ba Basin. Therefore, we used
aeromagnetic, high?resolution images of the Shuttle Radar Topographic Mission?SRTM,
structural geological data, deep well data and geological field data. Based on the results of the
data was observed that some preexisting structures in the crystalline basement coincide with
magnetic and topographic lineaments interpreted as fault reactivation of the Post?Miocene
units in the Para?ba Basin. Faults that offset lithostratigraphic units provided evidence that
tectonic activity associated with the deposition and erosion in the Para?ba Basin occurred
from Cretaceous to the Quaternary. The neotectonic activity that occurred in Para?ba Basin
was able to influence the deposition of sedimentary units and landforms. It indicates that the
deposition of post?Cretaceous units was influenced by reactivation of Precambrian basement
structures in this part of the Brazilian continental margin.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/21260 |
| Date | 08 March 2016 |
| Creators | Lima, Jean Carlos Ferreira de |
| Contributors | 37923579415, http://lattes.cnpq.br/6050302316049061, Vieira, Marcela Marques, 83933212715, http://lattes.cnpq.br/0930845549110627, Sousa, Maria Osvalneide Lucena, 30159520304, http://lattes.cnpq.br/1224024758602281, Lima, Elissandra Nascimento de Moura, 03611790494, http://lattes.cnpq.br/8939874789327011, Lima, Maria da Guia, 02453537474, http://lattes.cnpq.br/2202888433661735, Bezerra, Francisco Hil?rio Rego |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM GEODIN?MICA E GEOF?SICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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