Uso de um SIG no reconhecimento geológico em uma área de ocorrência fosfática na região da Bodoquena - MS

Abstract

The growing world consumption of food in all countries requires a constant optimization of agricultural production through the use of fertilizers based on phosphate. This assumes great importance in the mineral exploration scenario nowadays, considering that most of this element is destined for agricultural inputs. Recent discoveries of phosphate deposits in Brazil have contributed significantly to reducing production costs, decreasing imports, and consequently lower costs for producers. Recently, in the Bodoquena region, state of Mato Grosso do Sul, prospective surveys applying detailed geological mapping, drilling, and soil analysis have preliminarily defined high concentrations of P2O5 associated with carbonate rocks in the Corumbá Group formations. In this sense, the purpose of this study is to integrate direct information obtained in geological field mapping with indirect data such as satellite images and digital terrain models with 12,5m resolution from the Alos palsar sensor. The area is located in the region of Fazenda Veneza, between the municipality of Bonito and Bodoquena, Mato Grosso do Sul state. With a consistent database and analysis of the information in a GIS, it was possible to generate integrated maps, 3D visualizations, and a geological profile sectioning an area of interest. The presented results represent an important contribution to the geological detailing of the site and, considering the scale of detail, the indirect methods applied in a GIS added significant information to the local reconnaissance. Additionally, the results provide important support for the definition of targets for further studies.