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Tomando-se como base o mapeamento realizado pelo Projeto RADAMBRASIL foi realizada a atualização destas informações de acordocom o Manual Técnico de Geologia, publicado pelo IBGE (http://biblioteca..ibge.gov.br/Manual). Primeira etapa desta atualização:pesquisa dos estudos/trabalhos mais recentes desenvolvidos na região, compatíveis com o nível de detalhamento do mapeamento(1:250.000), visando uma avaliação da incorporação destes trabalhos. Segunda etapa: através de imagens de satélites recentesfoi realizada uma reinterpretação temática. Terceira etapa: trabalho de campo visando solucionar dúvidas e coleta de materialquando necessário. Quarta etapa: reinterpretação final. Quinta etapa: armazenamento das informações gráficas e alfanuméricasatualizadas no banco de dados, estruturado para a utilização destas informações em um ambiente de SIG. Constam deste bancoinformações sobre as unidades geológicas, suas descrições, estruturas e análises diversas.

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ver Fonte/+info (dt.atualização: 12/06/2018)

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Folha	SA23
Legenda_Completa	386
Identificacao_Unidade	386
Nome_Unidade	FormaÃ§Ã£o Pirabas
Letra_Simbolo	E3N2p
Litologia1
Litologia2
Litologia3
Litologia4
Tempo_Geologico	FanerozÃ³ico CenozÃ³ica PaleÃ³geno Oligoceno Chattiano
Area_Poligono_Km2	4.965
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