Comunidades no DSpace
Selecione uma comunidade para navegar por suas coleções
- Campus Samambaia, Campus Colemar Natal e Silva, Campus Aparecida de Goiânia.
Submissões Recentes
Item type: Item , Análise locacional para a construção de aterro sanitário em área predeterminada no município de Indiara, GO: caracterização e mapeamento das áreas adjacentes para avaliação de impacto ambiental(Universidade Federal de Goiás, 2025-12-05) Costa, Diullie Hannie Parreira; Nunes, Nínive Viana; Tavares, Tatiana Luiz dos Santos; Tavares, Tatiana Luiz dos Santos; Canile, Fernanda Maciel; Lopes, Débora NogueiraThis project aims to evaluate the technical locational viability of a sanitary landfill in the municipality of Indiara (Goiás, Brazil), research justified by the lack of adequate waste disposal in inland regions of the country and the necessity of mitigating environmental impacts. Since the area initially selected by the municipal government proved unviable, a new locational selection was chosen based on the technical criteria of Cruz and Almeida (2020), using a methodological approach that integrates secondary data, geological analysis, and geoprocessing tools. The geological mapping identified four main lithological units: the Anápolis-Itauçu Complex (NPlait), the Campestre Gneissic-Migmatitic Complex (NP2cam), Ferruginous Detrital-Lateritic Coverages (M1dl) and Alluvial Deposits (Q2a), which made possible the creation of geological, structural maps and a geological cross-section. For the assessment of risk and suitability of the study area and its immediate surroundings, maps of land use and land cover, flood susceptibility, slope, hypsometry, and potentiometry were generated. Considering that the newly proposed location meets most of the technical requirements for the implementation of a sanitary landfill, it is expected that the results will provide the necessary technical basis for effective decision-making regarding locational viability, and actively contribute to the sustainable management of solid waste in the municipality.Item type: Item , Mapeamento Geológico 1:50.000 da Chapada dos Guimarães (MT) – Área 1(Universidade Federal de Goiás, 2025-12-05) Brito, Alan Jarre Monteiro de; Barcellos, Bruno Costa; Borges, Mariana Soares Fortes; Canile, Fernanda Maciel; Canile, Fernanda Maciel; Sánchez, Joana Paula; Chagas, Daniel Bezerra dasThe Geological Mapping at a 1:50,000 scale of a 60 km2 area within the Chapada dos Guimarães National Park (MT) aimed to detail the lithostratigraphic units of the Paraná Basin, focusing on their composition, textures, and structures. The study identified, from base to top, a succession of sedimentary environments that includes the Furnas Formation (transitional coastal-fluvial environment, arkosic sandstones), the Ponta Grossa Formation (shallow platform environment, mudstones-siltstones and claystones), the Aquidauana Formation (continental glacial environment, various lithotypes, microscopically classified as wackes), and the Botucatu Formation (eolian/desert environment, quartz-arenites), in addition to alluvial/colluvial deposits. The most significant finding was the unprecedented identification of the Aquidauana Formation in the mapped region, which substantially expands the understanding of the Paraná Basin's local evolution. Petrographic analyses of the older formations (Furnas, Ponta Grossa, and Aquidauana), which were predominantly classified as Wackes, indicate a dominant tectonic provenance of Recycled Orogen. Furthermore, structural analyses revealed that the unit layers remained largely undeformed, displaying low-angle bedding dips (between 1 and 30 degrees), a pattern consistent with the stability of a cratonic sedimentary basin. These results reinforce the regional tectono-sedimentary framework and provide detailed data for the geological and geomorphological knowledge of the Chapada dos Guimarães.Item type: Item , Mapeamento geológico de detalhe e caracterização mineralógica em corpos pegmatíticos de Condado, município de Quixeramobim (CE)(Universidade Federal de Goiás, 2025-12-02) Bueno, Adriany Castro; Gomes, Amanda Martins; Lima, Martha Noélia; Nogueira Neto, José de Araújo; Nogueira Neto, José de Araújo; Paixão, Marco Antônio Pires; Cavalcanti, Débora EzequielThe southeastern portion of Quixeramobim (CE), the study area of this work, is situated within the geotectonic context of the Ceará Central Domain (DCC) of the Borborema Province (BP). The objective of this study is to present the results of detailed geological mapping (1:10,000), carried out over an area of approximately 3.3 km², which allowed the recognition of three lithostratigraphic units (Acopiara Unit, Banabuiú Granite, and Pegmatites), as well as the petrographic, lithogeochemical, and mineral-chemical characterization of the rocks in the area. The first unit corresponds to the Paleoproterozoic gneissic basement (Acopiara Unit), represented by partially migmatized gneisses interlayered with amphibolites and schists. These lithotypes exhibit an Sn+1 foliation with preferred NE–SW and N–S orientations and moderate to steep dips towards the west. Mineral assemblages of this unit, including amphibole (Am) + quartz (Qtz) + plagioclase (Pl) ± K-feldspar (Kfs), suggest metamorphism in the upper amphibolite facies. The second unit is represented by Neoproterozoic granites (Banabuiú Granite), composed of S-type, two-mica granites, classified mainly as monzogranites, predominantly falling within the leucocratic association field, with a peraluminous character and showing Ms > Bt. The third unit corresponds to Paleozoic pegmatites, occurring as two distinct bodies in the area, distinguished by their mineralogy and textural features: the first, occupying most of the study area, displays characteristic pegmatitic texture and a significant modal proportion of K-feldspar, which imparts a marked pink coloration; in some bodies, remnants of metasomatic “pockets” were observed. The second, concentrated in the northwestern portion of the area, contains higher concentrations of albite and biotite, in dioritic-composition zones where biotite displays a “fishbone” texture. The mapped pegmatite bodies host gemological minerals such as beryl (aquamarine) and varieties of tourmaline (schorl and elbaite-rubellite), as well as lithium-bearing minerals such as lepidolite. Geochemical data obtained through flame photometry and a portable lithium analyzer indicate significant lithium oxide concentrations in the minerals analyzed, including 42,725 ppm Li in lepidolite, 23,890 ppm in elbaite-rubellite, 2,507 ppm in muscovite, 1,533 ppm in beryl, and 371 ppm Li in black tourmaline.Item type: Item , Mapeamento geológico 1:50.000 da Chapada dos Guimarães (MT) – Área 2(Universidade Federal de Goiás, 2025-12-04) Fernandes, Emili Rodrigues; Miranda, Gabriel Peixoto de; Sánchez, Joana Paula; Sánchez, Joana Paula; Canile, Fernanda Maciel; Lima, Wemerson Gonçalves deThis is the graduation thesis for the Geology degree at the Federal University of Goiás. The study presents the results of geological mapping in the region of Chapada dos Guimarães National Park. Located in the municipality of Chapada dos Guimarães, Mato Grosso, the park covers approximately 45.2 km² and comprises lithostratigraphic units ranging from the Neoproterozoic to the Mesozoic. The main objectives were to produce geological mapping at a 1:50,000 scale and to characterize the lithological and structural units. The methodology included literature review, satellite image interpretation and DEM analysis, description of outcrops, sampling and collection of structural data in the field, and, finally, microscopic analyses, report preparation, and development of thematic maps. The results show that the sedimentary formations of the Paraná Basin were deposited in erosional contact over the metasedimentary rocks of the Cuiabá Group. Photo-structural analysis revealed strong geomorphological lineaments that correspond to the fracture patterns observed in the field. Structural interpretations indicate that the bedding of the Paraná Basin units and the structures present in the Cuiabá Group display fracture patterns that reflect regional tectonic controls. This report consolidates the geological interpretation of the area by integrating field data, remote sensing, and laboratory analyses, resulting in a coherent geological model for the studied region.Item type: Item , Análise estrutural por sensoriamento remoto e caracterização da deformação rúptil na região das serras do Quebra-Rabicho e Taquari, Pirenópolis - GO(Universidade Federal de Goiás, 2025-11-28) Oliveira, Vinícius Rodrigues de; Rodrigues, Sérgio Wilians de Oliveira; Rodrigues, Sérgio Wilians de Oliveira; Nogueira Neto, José de Araújo; Chagas, Daniel Bezerra dasThis study presents a structural analysis based on lineaments obtained using remote sensing techniques, carried out in the region of Pirenópolis, in the state of Goiás. Geologically, the study area is part of the Pireneus Syntax, belonging to the Brasília Belt, formed during the amalgamation of Western Gondwana. The lithologies present in the area correspond to the units of the Rio do Peixe Metavolcanic-Sedimentary Sequence, Araxá Group, and Granites related to the Itapuranga Suite. Shaded relief images were used, with four azimuth directions, namely 00º, 45º, 90º, and 315º with illumination at 45º, produced from the ALOS PALSAR elevation model. Techniques for processing and interpreting shaded relief images were applied with the aim of highlighting structural features and characterizing deformation patterns. Subsequently, the results obtained were compared with structural data obtained from mapping carried out by Universidade Federal de Goiás (UFG). Analysis of the shaded relief images revealed a predominance of lineaments with E-W, N-S, and NE-SW directions. The E-W direction probably represents the structural control given by the main foliation and is reflected in the lineaments observed in the high spatial resolution image. This direction also reflects the orientations of the ridges observed in the Quebra Rabicho and Taquari mountain ranges. The other two directions, N-S and NE-SW, are well defined in the analysis of structural lineaments. These directions reflect the set of fractures observed in the field. They can be interpreted as conjugate pairs of Riedel-type fractures (R and R’), in which the principal stress (σ1) has a direction of N35 (N35E).