Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-20T22:47:57Z No. of bitstreams: 1 FranciscoGabrielFerreiraDeLima_DISSERT.pdf: 19778017 bytes, checksum: b8c1ba53855ac471fdec87a2233bb799 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-24T21:42:15Z (GMT) No. of bitstreams: 1 FranciscoGabrielFerreiraDeLima_DISSERT.pdf: 19778017 bytes, checksum: b8c1ba53855ac471fdec87a2233bb799 (MD5) / Made available in DSpace on 2017-02-24T21:42:15Z (GMT). No. of bitstreams: 1 FranciscoGabrielFerreiraDeLima_DISSERT.pdf: 19778017 bytes, checksum: b8c1ba53855ac471fdec87a2233bb799 (MD5) Previous issue date: 2016-08-09 / A borda sudeste da Bacia do Parna?ba (BPar), regi?o fronteiri?a aos estados do Piau?, Bahia e Pernambuco, ? marcada por uma expressiva orienta??o NE-SW, paralela ? do Lineamento Transbrasiliano, bem como pelo estreitamento das faixas aflorantes das forma??es silurodevonianas, em compara??o ao observado na borda leste da bacia do Parna?ba (BPar). A evid?ncia de controle estrutural nessa borda da bacia foi analisada com a interpreta??o de imagens de relevo sombreado, geradas a partir de imagens de radar. Foram destacados os fotolineamentos com dire??o preferencial NE-SW no embasamento cristalino e na cobertura sedimentar, bem como na regi?o de contato entre esses dom?nios. Foi realizada uma an?lise integrada das estruturas observadas em macroescala (imagens de radar e multiespectrais) e em campo (mesoescala), resultando na caracteriza??o de tr?s eventos deformacionais, com base em crit?rios de orienta??o, cinem?tica e cronologia relativa. As estruturas da deforma??o Dn foram reconhecidas no embasamento cristalino e nas sequ?ncias mol?ssicas das bacias de Ara?? e S?o Juli?o, sendo correlacionadas ao contexto do Grupo Jaibaras, no NW do Cear?, com idade ediacaranacambriana. Esse evento deformacional est? associado a uma etapa tardia, retrometam?rfica e de car?ter pl?stico-fr?gil, das zonas milon?ticas brasilianas. A assinatura do mesmo inclui zonas de cisalhamento dextrais orientadas NE-SW, e veios ?cidos preenchendo bandas C dilatacionais e juntas de distens?o E-W. A deforma??o Dn+1 corresponde a uma nova etapa de movimenta??o dextral em estruturas NE-SW, acompanhada por falhas normais e juntas de distens?o com orienta??o WNW a E-W, essencialmente de car?ter fr?gil e tamb?m afetando as unidades silurodevonianas. A deforma??o Dn+2 ? caracterizada por falhas normais, diques b?sicos (correlacionados ? Suite Sardinha, eocret?cea), veios silicosos (preenchendo descontinuidades nas rochas), todos com orienta??o NE-SW. As falhas NE-SW podem ocorrer no contato entre o embasamento e a cobertura sedimentar ou j? no interior da bacia. Esse evento ? resultado de uma distens?o com orienta??o NW-SE, an?loga ?quela reconhecida mais a leste, nas Bacias Interiores do Nordeste do Brasil, associada ao rifteamento do Atl?ntico Sul. / The southeast border of the Parna?ba Basin (BPar), which follows the borders between the Piau?, Bahia and Pernambuco states, is characterized by an expressive NE trend parallel to the one of the Transbrasiliano Lineament, as well as a narrowing of the outcropping belt of the Silurian-Devonian formations, as compared to the situation in the east basin border. The evidence of a structural control in this basin border was analysed interpreting hillshade images obtained from radar imagery. NE-trending photolineaments were highlighted in the crystalline basement and in the sedimentary cover, as well as in the contact zone between these domains. An integrated analysis of macroscale (radar and multispectral images) and mesoscale (outcrop data) structures, lead to the characterization of three deformation events on the basis of their orientation, kinematics and chronology. Dn structures were recognized in the crystalline basement and molassic sequences of Ara?? and S?o Juli?o basins, being correlated to same context of the Jaibaras Group, in NW Cear?, of Ediacaran-Cambrian age. This deformation event is related to a retrometamorphic, plasticbrittle late stage of Brasiliano mylonite zones. Its signature includes NE-trending dextral transcurrent shear zones, as well as acid veins filling dilational C bands and E-W extension joints. Dn+1 deformation corresponds to a new stage of dextral movement along the NE-trending structures, accompanied by normal faults and extension joints oriented WNW to E-W, in this case overprinting the Silurian-Devonian formations. Dn+2 deformation is characterized by normal faults, basic dykes (correlated to the Eocretaceous Sardinha Suite) and siliceous veins (filling anisotropy in rocks), all of them following a NE-SW trend. The NE-trending faults may occur in the contact between basement and the sedimentary cover, or inside the basin. This event resulted from a NWSE extension, analogous to the one recognized further east in the Northeast Brazil Interior Basins, associated to the South Atlantic rifting.