Sandro Sidnei Vargas de Cristo

Análise das transformações ambientais no entorno do Parque Estadual do Lajeado, Palmas – Tocantins.

The research consists of the analysis of the transformations of land use occurred between 2000 and 2015 in the surroundings of the State Park of Lajeado, located in the municipality of Palmas, capital of the state of Tocantins, taking as reference the observation of the interference of the different Forms of occupation installed there. In order to reach the proposed objective, Geoprocessing and Remote Sensing techniques were used to organize a database using the Spring software of the National Institute of Space Research (INPE) and the interpretation of images of the Landsat 5 and Landsat 8 satellites, supported by Fieldwork. The results show that urban sprawl and large-scale agriculture are primarily responsible for the significant transformation of the natural aspects of the area.

Jalapão: Sedimentary Heritages in Central Brazil

The Jalapao region, a region with undefined boundaries located in central Brazil, has unique scenic beauty and unmatched physical features. It has a set of residual landforms with flat tops and scarped slopes resulting from the regressive erosion of large tabular features such as the Serra Geral and the Ocidental da Bahia and Mangabeiras plateaus. Geologically, it generally consists of a crystalline basement and the Parnaiba and Sanfranciscana sedimentary basins, which are covered by recent deposits. However, geomorphology of the region is still poorly recognized, although some specific features are known, such as canyons, dunes, caves, bubbling springs, and several residual landforms caused by intense local erosive action. This chapter aims to describe the geomorphology of the area and to explain the existing features and geomorphologic processes.