Análise geomorfológica do maciço Serra da Lua, município do Cantá - RR

Abstract

The State of Roraima presents heterogeneity of geomorphological features, which support the creation of a unique landscape in the Amazon region. Note the, geomorphological features consist of plateaus dissected, flanked by pediplanos intramountains as well as residual relief that point in the extensive flat areas. This remarkable variety of relief units reflects the interaction of endogenous and exogenous factors working in the geological ages within the lithostructural areas. Within this panorama, is located the region of Serra da Lua, whose geomorphological features stand out in the regional landscaped setting, for being the residual plateau inserted into the unit called the Residual Plateaus of Roraima, flanked a hilly morphology belonging to unit Plateau Dissected northern Amazon and flattened areas of pediplano Rio Branco - Rio Negro. Note, therefore, the importance of geomorphological studies before all this morphostructural dynamics of landforms, especially at the power of the changes caused by human activities in the Amazon landscape that has been of concern with respect to the transformations of natural landscapes. The use of geoprocessing comes as contribution in this work, for which will provide the knowledge of the distribution and behavior of the geomorphological unit. Geotechnologies provide a more detailed analysis of the studied objects. The geomorphology combined with the geotechnologies emerges as a powerful field of study as it provides a key role in landscape analysis. This study aimed to analyze the morphostructural features of the Serra da Lua, with the aid of photo-interpretation in remote sensing complemented by in loco analysis in order to map and classify the geomorphological features that make up this landscape. In which one can identify the landforms associated with structural levels identified in modeled accumulation and dissection classified according to the IBGE proposed nomenclature: Porch in Structured Crest (PCRE); Massive Somital Convex (MSC); Hills and hills staggered with open valleys (MEVA) and mountainous areas in enclosed valleys (EVS), characterized as modeled dissection. The modeled accumulation were identified in the region being characterized as planed surfaces (SAP) and Surface Alluvial (SA).