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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 obtidasa partir do ano de 1994, foi realizada uma interpretação temática separando em diversos arquivos as unidades geológicas eestruturas. Terceira etapa: trabalho de campo visando solucionar dúvidas e coleta de material quando necessário. Quartaetapa: reinterpretação final. Quinta etapa: armazenamento das informações gráficas e alfanuméricas atualizadas no bancode dados, estruturado para a utilização destas informações em um ambiente de SIG. Constam deste banco informações sobreas unidades geológicas, suas descrições, estruturas e análises diversas.

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

FID	GeologiaSD22.fid-6d9cbe3e_18e3b0a1db5_5cf8
Folha	SD22
Legenda_Completa	001
Identificacao_Unidade	1
Nome_Unidade	Aluviões Holocênicos
Letra_Simbolo	N4a
Litologia1
Litologia2
Litologia3
Litologia4
Tempo_Geologico	Fanerozóico Cenozóica Neógeno Holoceno
Area_Poligono_Km2	34.553
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