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@Article{PadilhaVitoPáduBolo:2014:EvNeIs,
               author = "Padilha, Antonio Lopes and Vitorello, {\'{\I}}caro and 
                         P{\'a}dua, Marcelo Banik de and Bologna, Mauricio S.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and Univ Sao Paulo, IAG, Dept Geofis, 
                         BR-05508090 Sao Paulo, Brazil.",
                title = "Electromagnetic constraints for subduction zones beneath the 
                         northwest Borborema province: Evidence for Neoproterozoic island 
                         arc-continent collision in northeast Brazil",
              journal = "GEOLOGY",
                 year = "2014",
               volume = "42",
               number = "1",
                pages = "91--94",
                month = "Jan.",
             abstract = "The Borborema province in northeast Brazil occupies a crucial 
                         position in the complex Neoproterozoic West Gondwana 
                         reconstruction puzzle. However, correlation attempts between 
                         northeast Brazil and West Africa have been hampered because key 
                         links in the internal structure of the Borborema province have yet 
                         to be identified. To aid such an correlation, a magnetotelluric 
                         study was undertaken along two subparallel profiles to image the 
                         deep electrical structure in the northwestern part of the 
                         province. Despite the occurrence of recurrent tectonothermal 
                         episodes that affected the region in the past, two-dimensional 
                         models show that a large-scale signature of the assembled terrane 
                         during the Neoproterozoic accretion and collision is plausibly 
                         preserved in the area. Two resistive features dipping from the 
                         upper crust into the upper mantle in downward convergence 
                         (opposite directions) are defined beneath one of the profiles that 
                         are interpreted to be related to remnants of former subduction 
                         slabs, since the observed high-resistivity zone is consistent with 
                         a dehydrated oceanic lithosphere depleted of sediments. On the 
                         basis of geological and geochemical information, a model of 
                         collision of an intraoceanic magmatic arc coalesced into an 
                         earlier passive margin is proposed for the Neoproterozoic tectonic 
                         evolution of the province, involving processes of reversal of 
                         subduction polarity and oceanic slab breakoff.",
                  doi = "10.1130/G34747.1",
                  url = "http://dx.doi.org/10.1130/G34747.1",
                 issn = "0091-7613 and 1943-2682",
                label = "isi 2014-05 PadilhaVitoPaduBolo:2014:EvNeIs",
             language = "en",
           targetfile = "padilha_etal_2014.pdf",
        urlaccessdate = "25 jan. 2021"
}


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