FCT - Faculdade de Ciências e Tecnologia

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    Mapeamento geológico integrado 1:50.000 da região da Serra da Jiboia (GO) - área 4
    (Universidade Federal de Goiás, 2023-02-15) Santos, Daniel Carelli Batista; Carvalho, Franklin Williams Silva de; Lima, Gabriel Dutra de; Temporim, Filipe Altoé; Temporim, Filipe Altoé; Oliveira, Ítalo Lopes de; Arab, Paola Bruno
    The present work had as objective the geological mapping in the region of Nazário - GO from the accomplishment of systematic works that integrated data from remote sensing (orbital images), geophysical, geochemical, lithological, petrographic, structural and geoenvironmental surveys. The result of the integrated work was the geological cartography of Neoproterozoic units associated to the Goiás Magmatic Arc: Metavolcanosedimentary Anicuns-Itaberaí Sequence, Anápolis-Itauçu Complex, Creoulos Granite and Santa Bárbara Anorthositic Complex. Four deformational stages were recognized in the area: D1 represents E-W compression associated with regional folds with eastward vergence; D2 is the E-W compression refolding of the D1 progression; D3 characterizes shallower crustal level change during deformation progression and generates N-S lateral shortening of the D2 deformation and N-S axis crenulations; D4 represents the ruptile-ductile stage of E-W compression with formation of shear zones and thrust faults. In general, the rocks of the Anicuns-Itaberaí Metavolcanosedimentary Sequence in the study area are metamorphosed between green schist and amphibolite facies with retrometamorphism to green schist facies. The region is relevant for understanding the evolution of the Brasília Belt, as the rocks are linked to tectonic and magmatic events that started with in the formation of the Magmatic Arco f Goias. The study area is economically interesting due to the presence of mineral occurrences with potential for metallurgy (manganese and iron) and civil construction (sand, gravel, crushed stone and ornamental rocks).