Mapas de anomalia de elementos através de prospecção geoquímica e tratamento estatístico no município de Caçapava do Sul e arredores

Abstract

Geochemical prospecting makes it possible to analyze the concentration, mobility and dispersion of chemical elements in rocks, soils and waters. Provides information for mineral, environmental and hydrogeological research. The present work aims at the elaboration of anomaly maps of elements from the obtaining of geochemical data collected through soil sampling, bateia concentrate, current sediments and rocks in preexisting public digital databases. The development of the work was divided in two main stages, the collection of the data obtained through the database through the GeoSGB portal and the organization and selection of the data that present interest and relevance for the proposed work, so that subsequently with the use of statistical treatment univariate and bivariate analysis performed through Excel, the elements of interest are defined. The second step was performed through ArcGIS software, where interpolation was applied to the elements gold, molybdenum, copper, nickel, lead, tin, and zinc. The Kriging responses presented an anomalous result in large and small scale of location and for the gold element due to the greater number of data regarding the element it was possible to observe a greater accuracy in the detection of anomalies.