Mapeamento geológico integrado 1:50.000 da região da Serra da Jiboia (GO) - área 3
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Data
2023-02-14
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Universidade Federal de Goiás
Resumo
The area of study is located in the southeast portion of the state of Goiás, next to the municipalities of Nazário and Anicuns. It is geologically located in the context of the Goiás Magmatic Arc (AMG), which is composed by rocks that register the complex metamorphic and structural geotectonic development, associated with the Brasiliano orogenesis (Arquean-Neoproterozoic), developed mainly during the structuring of the Brasília Belt. The integrated geological mapping aimed to map the different lithofacies associated with the outcropping units, namely: Anicuns Itaberaí Metavolcanosedimentary Sequence, Anápolis Itauçu Granulitic Complex, Campestre Gneiss Migmatitic Complex, Anicuns-Santa Bárbara Suite, Creole Granite and undifferentiated granitic intrusions. The work was carried out from the processing and interpretation of photointerpretive, geophysical, geochemical and geoenvironmental data, as well as lithological and structural data collected in the fieldwork, generating geological, structural and point maps as final products. The rocks exhibit metamorphism from greenschist facies to the amphibolite-granulite transition. Four deformational phases were identified: D1 generated a main E-W compression, marked by isoclinal folds with NS axes, which folded S0 and originated the S1 foliation; D2 represents the continuity of compression, generating parasitic folds and S2 foliation; D3 represents the formation of NW-SE shear zones and thrust faults, associated with the continuity of E-W compression; D4 reflects the decrease in compression, generating S3 foliation. The area presents occurrences of minerals used in civil engineering and industry.
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Mapeamento geológico, Arco magmático de Goiás, Faixa Brasília, Geological mapping, Goiás magmatic arc, Brasília Belt
Citação
SILVA, Gabriela Soares Freitas e; SILVA, Michele Urbano da. Mapeamento geológico integrado 1:50.000 da região da Serra da Jiboia (GO) - área 3. 2023. 231 f. Trabalho de Conclusão de Curso (Bacharelado em Geologia) - Faculdade de Ciências e Tecnologia, Universidade Federal de Goiás, Aparecida de Goiânia, 2023.