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Aplicação de dados aerogeofísicos no mapeamento geológico do limite entre os terrenos Arqueanos e Proterozóicos da região de Crixás-Cedrolina, Goiás

2001; Sociedade Brasileira de Geologia; Volume: 31; Issue: 3 Linguagem: Inglês

10.5327/rbg.v31i3.941

2317-4889

Marcelo de Lawrence Bassay Blum, Adalene Moreira Silva, Hardy Jost, Paulo Roberto Meneses, Reinhardt A. Fuck, José Affonso Brod, Alexandre de Amorim Teixeira, Alexandre Augusto Cardoso da Silva, André Luiz Durante Spigolon, MARCOS VINICIUS RODRIGUES MAAS, Michelle Mota de Souza, Pedro Macedo Júnior, Bruno Eustáquio Moreira Lima, Marina de Oliveira Campos,

Geophysical and Geoelectrical Methods

This paper presents an integrated approach to geological mapping, by the use of old airborne geophysical data. The data processing and interpretation allowed the use of the Brazil - Canada Geophysical Project for much more comprehensive understanding of the regional and local geology. The interpretation of airborne magnetics has provided both an overview of the regional structure as well as further insights into the structural controls of the Crixas-Cedrolina region. The four radiometric maps (total count, potassium, uranium and thorium) were individually enhanced by manipulation of their histograms and then displayed in pseudo-color, as ternary displays (R:G:B = K:Th:U). Individual lithological units can be traced due to their distinctive radiometric response. Ground magnetics profile provided good results identifying detailed location for the boundary. This kind of approach is fundamental for investigating the regional structural framework and helps to better define the boundaries of the different lilhostratigraphic units present in Precambrian terranes.