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Previous issue date: 2015-08-12 / O estudo de bacias sedimentares envolve uma integra??o de informa??es adquiridas a partir da aplica??o de diversas metodologias. Os m?todos potenciais, gravim?trico e magn?tico, representam uma metodologia eficaz no estudo do arcabou?o tect?nico de bacias sedimentares a um custo relativamente barato, se comparado ?s demais t?cnicas. O presente trabalho apresenta a integra??o de diferentes t?cnicas avan?adas de processamento geof?sico em dados potenciais (Redu??o ao Polo, Matched Filter, Gradiente Horizontal e Inclina??o do Sinal Anal?tico), que auxiliaram grandemente na particulariza??o da express?o geof?sica das principais componentes estruturais do Rifte Potiguar e seu embasamento cristalino. Os resultados permitiram identificar claramente as bordas falhadas do Rifte Potiguar (Carnaubais, Apodi e Mulungu), assim como seus componentes internos, horsts Macau e Quixaba, e os grabens Apodi, Umbuzeiro e Boa Vista. As expressivas zonas de cisalhamentos do seu embasamento (Senador Pompeu, Jaguaribe, Portalegre, A?u, Flor?nia-?ngicos e Picu? Jo?o-C?mara) tamb?m foram evidenciadas pelo mapeamento geof?sico como extensos alinhamentos sigmoidais de dire??o NE-SW. A integra??o dos dados geof?sicos com dados geol?gicos permitiu a identifica??o de oito dom?nios tect?no-geof?sicos com o objetivo de se estabelecer o comportamento dos principais blocos crustais da Prov?ncia Borborema abaixo do pacote sedimentar. As respostas fornecidas pelas t?cnicas permitiram ainda a associa??o das estruturas acima citadas com as principais etapas de rifteamento pelos quais passou a bacia durante a sua complexa evolu??o. O trend NE-SW, que ocorre como o principal padr?o direcional nas regi?es adjacentes ao Rifte Potiguar e tamb?m em seu interior, evidencia uma forte influ?ncia de estruturas pr?-cambrianas na forma??o da bacia, assim como a deforma??o NW-SE nos diques Rio Cear?-Mirim, o truncamento de estruturas NE com a Falha de Apodi, e tamb?m o afastamento entre a Zona de Cisalhamento Portalegre e o Sistema de Falhas de Carnaubais, contribuem para hip?tese de propaga??o dos esfor?os da Margem Equatorial para o interior do continente. / The study of sedimentary basins involves an integration of information acquired from the application of different methodologies. The Potential Methods, gravity and magnetic represent an effective methodology to study the tectonic framework of sedimentary basins, at a relatively cheap cost than another techniques. The present work presents the integration of different advanced techniques of geophysical processing in potential data (Reducing to Pole, Matched Filter, Horizontal Gradient and Tilt Derivative) which greatly assisted in characterization of geophysical expression of the main structural components of Potiguar Rift and it tectonic framework. The results allowed clearly identify the failed edges of the Potiguar Rift (Carnaubais, Apodi e Mulungu faults), as well as its internal components, Macau and Quixaba horsts, and the Apodi, Umbuzeiro and Boa Vista grabens. The expressive shear zones of it basement (Senador Pompeu, Jaguaribe, Portalegre, A?u, Flor?nia-?ngicos e Picu? Jo?o-C?mara) they also were evidenced by geophysical mapping as extensive sigmoidal alignments of NE-SW direction. The integration of geophysical data with geological data allowed the identification of eight tectonic geophysicist domains, with purpose of establishing the behavior of main crustal blocks of the Borborema Province bellow of the sedimentary package. The results provided by techniques also allowed the association of the above mentioned structures with the main stages of rifting by which passed the basin during its complex evolution. The trend NE-SW, that occurs as the main directional pattern in the adjacent regions to the Potiguar Rift, and also inside evidence a strong control of precambrian structures in basin formation, as well as the NW-SE deformation in the Rio Cear?-Mirim dykes swarms, the truncation of NE structures with Apodi Fault, and also the separation between Portalegre Shear Zone and the Carnaubais System Faults, contribute to the hypothesis of propagation of the Equatorial Margin efforts into the continent.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/20452 |
| Date | 12 August 2015 |
| Creators | Souza, Suelen Ferreira de |
| Contributors | 40623742420, http://lattes.cnpq.br/8279954644750743, Medeiros, Walter Eug?nio de, 19980701404, http://lattes.cnpq.br/2170299963939072, Barbosa, Jos? Ant?nio, 85759058487, http://lattes.cnpq.br/9551646929257730, Castro, David Lopes de |
| 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/masterThesis |
| 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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