Fechar
Metadados

@Article{BolognaEgbPadPádVit:2017:3DInCo,
               author = "Bologna, Mauricio S. and Egbert, Gary D. and Padilha, Antonio 
                         Lopes and P{\'a}dua, Marcelo Banik de and Vitorello, 
                         {\'{\I}}caro",
          affiliation = "{Universidade de S{\~a}o Paulo (USP)} and {Oregon State 
                         University} and {Instituto Nacional de Pesquisas Espaciais (INPE)} 
                         and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "3-D inversion of complex magnetotelluric data from an 
                         Archean-Proterozoic terrain in northeastern S{\~a}o Francisco 
                         Craton, Brazil",
              journal = "Geophysical Journal International",
                 year = "2017",
               volume = "210",
                pages = "1545--1559",
                 note = "{Setores de Atividade: Pesquisa e desenvolvimento 
                         cient{\'{\i}}fico.}",
             keywords = "Indu{\c{c}}{\~a}o Eletromagn{\'e}tica Terrestre, Invers{\~a}o 
                         3-D, Cr{\'a}ton do S{\~a}o Francisco, Bloco Serrinha.",
             abstract = "We present a magnetotelluric (MT) study in the northeastern part 
                         of the S{\~a}o Francisco Craton that encompasses an 
                         Archean-Proterozoic terrain, the Serrinha Block, breached by a 
                         rift basin developed mostly in Early Cretaceous times during the 
                         opening of the South Atlantic Ocean. Even though the MT sites are 
                         regularly spaced, the profiles have different orientations from 
                         one another, making the data distribution over the area highly 
                         uneven and therefore non-ideal for 3-D modeling. However, the data 
                         set is very complex, with dimensionality analysis indicating 
                         prevalence of 3-D geoelectric structure. Results from 3-D 
                         inversion are evaluated for robustness and potentiality for 
                         yielding tectonic information. At upper crustal depths, the 
                         resulting 3-D model is coherent with surface geology, whereas at 
                         mid and lower crustal depths more cryptic structures are revealed, 
                         likely of Palaeoproterozoic age. The most striking features in the 
                         model are several strong (\∼1 \Ω\⋅m) crustal 
                         conductors beneath the central part of the Serrinha Block, which 
                         we attribute to a Palaeoproterozoic oceanic plate subduction and 
                         arc-continent collision event involving the Rio Itapicuru 
                         Greenstone Belt and the basement of the Serrinha Block. The 
                         west-dipping geometry of these conductors provides a constraint on 
                         subduction polarity and gives support to tectonic evolutionary 
                         models proposing that the Rio Itapicuru Belt was formed in an 
                         island arc environment.",
                  doi = "10.1093/gji/ggx261",
                  url = "http://dx.doi.org/10.1093/gji/ggx261",
                 issn = "0956-540X",
                label = "lattes: 0842543237562135 3 BolognaEgbPadP{\'a}dVit:2017:3DInCo",
             language = "en",
           targetfile = "bologna_3d.pdf",
        urlaccessdate = "04 dez. 2020"
}


Fechar