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@Article{BezerraCMSMRBSN:2020:PoStFi,
               author = "Bezerra, Francisco H. and Castro, David L. de and Maia, Rubson P. 
                         and Sousa, Maria O. L. and Moura Lima, Elissandra N. and Rossetti, 
                         Dilce de F{\'a}tima and Bertotti, Giovanni and Souza, Zorano S. 
                         and Nogueira, Francisco C. C.",
          affiliation = "{Universidade Federal do Rio Grande do Norte (UFRN)} and 
                         {Universidade Federal do Rio Grande do Norte (UFRN)} and 
                         {Universidade Federal do Cear{\'a} (UFC)} and {Universidade 
                         Federal do Rio Grande do Norte (UFRN)} and {Universidade Federal 
                         de Campina Grande (UFCG)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Delft University of Technology} and 
                         {Universidade Federal do Rio Grande do Norte (UFRN)} and 
                         {Universidade Federal de Campina Grande (UFCG)}",
                title = "Postrift stress field inversion in the Potiguar Basin, Brazil  
                         Implications for petroleum systems and evolution of the equatorial 
                         margin of South America",
              journal = "Marine and Petroleoum Geology",
                 year = "2020",
               volume = "111",
                pages = "88--104",
                month = "Jan.",
             keywords = "Neotectonics, Basin inversion, Stress field, Equatorial margin, 
                         Tectonic uplift.",
             abstract = "Rifting and related normal stress regime in the equatorial 
                         continental margin of Brazil ceased during the Late Cretaceous, 
                         when the stress regimes in eastern South America and West Africa 
                         changed to induce strike-slip or reverse motion. In this study, we 
                         explore the postrift tectonic, geomorphic, magmatic, and 
                         sedimentary responses to stress changes using the Potiguar Basin, 
                         the easternmost basin in the equatorial margin of Brazil, as a 
                         case study. We use field and topographic data, 2D seismic 
                         reflection lines, vertical electric soundings, and 
                         geochronological and borehole data to constrain the stress 
                         evolution of the Potiguar Basin from the Late Cretaceous to the 
                         Quaternary, discussing the role of basin inversion on 
                         sedimentation and landforms. Our results indicate the presence of 
                         two strike-slip stress regimes after rifting. The first stress 
                         field (SF1) occurred from Late Cretaceous to the middle Miocene 
                         and consisted of a N-S-oriented maximum subhorizontal compression 
                         and an E-W-oriented extension. The second stress field (SF2) took 
                         place from the middle Miocene to the present day and included 
                         subhorizontal E-W to NW-SE compression combined with N-S and NE-SW 
                         subhorizontal extension. Emplacement of volcanic rocks occurred 
                         along transtensional faults, with a principal peak during SF1 at 
                         20-30 Ma and a subordinate peak during SF2 at 5-10 Ma, In response 
                         to shortening during SF2, a 70-kin-long and 50-km-wide dome 
                         formed, where marine Miocene strata were uplifted to similar to 
                         250 m asl. This uplift induced the displacement of alluvial 
                         channels away from the dome. Anticlines formed by transpression 
                         along the main NE-SW-striking faults during both SF1 and ST2 acted 
                         as traps in the petroleum system. Similar shifts and stress field 
                         inversions documented in other areas of the Brazilian continental 
                         margin are consistent with the Neogene rise of the Andes and may 
                         have implications for reconstructing the tectonic history of the 
                         Equatorial Atlantic margin of South America.",
                  doi = "10.1016/j.marpetgeo.2019.08.001",
                  url = "http://dx.doi.org/10.1016/j.marpetgeo.2019.08.001",
                 issn = "0264-8172",
             language = "en",
           targetfile = "bezerra_postrif.pdf",
        urlaccessdate = "12 abr. 2021"
}


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