SANTOS -R. L. Retrospective Geomorphological Mapping of Cuiabá City (MT).Dissertação de Mestrado (Departament of Geography, FFLCH), University of São Paulo, São Paulo, 2018, 190p. + 3 attachments. This research analyzes the geomorphology of Cuiabá (MT) Urban Site and its surroundings. For that, a detailed geomorphological map of this area is presented in the 1: 50,000 scale, elaborated from documentary research, fieldwork, data analysis and laboratory treatment and, mainly, analysis and interpretation of aerial photographs. The study, developed according to the Anthropogeomorphology approach or Anthropogenic Geomorphology, emphasizes the application of retrospective geomorphological mapping. This cartographic approach deals with the pre-perturbation stage, corresponding to the original morphology, pretending to reconstruct the geomorphological systems prior to the different anthropic interventions.The mapping was based on a multiscale and systemic approach, which transited between the various elements of the slope, reaching the level up to the interflow, as well as the river channel and floodplain subsystems and their respective morphologies. The cartographic work consisted of two moments, the preliminary morphological cartography, followed by the verification and validation of the correlations between the morphological units ascertained in the field, including the integrate landforms materials.Punctual data resulting from the description of outcrops within the city and its surroundings were associated with available bibliographic information and laboratory analyzes. This set allowed the materials characterization the of the morphological units, as well as the correlation between the morphological map and the material information allowed to interpret the morphodynamics of these systems, oriented to possible spatial tendencies of current hydrogeomorphologic processes.With this, the second moment was reached, that of the final cartography, the geomorphological map. The geomorphological map and its analysis allowed to reconstruct and characterize the landforms of Cuiabá Urban Site, as well as the rescue of geomorphological systems in the antropic pre-perturbation stage. As a result of the research, the map of the original morphology of Cuiabá the urban site and its surroundings was produced, as well as its geomorphological map.Among the morphologies mapped and described, it was possible, for example, to identify basal morphologies in a crib with probable levels of exfiltration. This form possibly correlates with intra-formational lithologic and textural discontinuities which, in turn, may form part of an internal water circulation command.It is concluded that the retrospective geomorphological mapping is an important auxiliary instrument for the evaluation of the effects derived from anthropic action, mainly in the intervention modalities of high magnitude, to the example of urbanization.Therefore, it becomes indispensable for understanding the morphodynamics of undisturbed systems and for the basis of applied re...
O estudo apresenta resultados da aplicação da cartografia geomorfológica retrospectiva visando a reconstituição da morfologia original do sítio urbano de Cuiabá (MT), correspondente ao estágio pré-urbano. Para essa reconstituição, o estudo combinou procedimentos tradicionais da pesquisa em geomorfologia e da antropogeomorfologia para a recuperação de informações geomorfológicas de áreas antropizadas. A pesquisa enfatiza o reconhecimento de sistemas hidromorfológicos do sítio urbano de Cuiabá e suas adjacências em fase anterior à intensa urbanização, portanto, em cenários de paisagem nos quais atributos morfológicos e morfométricos originais na escala de vertentes e de sistemas interfluviais predominavam. Os principais documentos utilizados nessa reconstituição englobam documentação histórica, relatos de expedições, de moradores, jornais, fotografias, toponímia, cartografia antiga e fotos aéreas. Além dessas fontes de informação, a pesquisa utilizou dados pedo-estratigráficos disponíveis em relatórios de obras de engenharia, observações de campo com descrições de afloramentos, sondagens com trado, trincheiras e análises de laboratório. Dentre os principais resultados, foi produzida a carta da morfologia original de Cuiabá, na escala 1:50:000. Sua análise permitiu identificar e associar morfologias de depressões interfluviais segundo sua representatividade regional, com provável comando de circulação hídrica interna evidenciado por níveis de exfiltração possivelmente correlacionados com descontinuidades litológicas e texturais. Ratificou-se também o potencial da cartografia geomorfológica retrospectiva para estudos morfodinâmicos e morfogenéticos, base da pesquisa geomorfológica para pesquisas aplicadas.
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