Análisis e integración de datos espaciales en investigación de recursos geológicos mediante Sistemas de Información Geográfica

In modern investigation of geological resources, including mineral exploration, large amounts of spatial data are usually collected. These data correspond to diverse and costly thematic information and are adequately organized, visualized and analyzed using a geographical information system (GIS). The main objective of data analysis in this field is the creation of maps showing areas or points where a geological resource may be located (e.g., mineral favorability maps). To achieve this, predictive spatial models capable of incorporating and combining all relevant variables related to the resources have to be generated. These models are usually implemented using GIS and are typically based on numerical rules, ranging from combination of maps using logical, arithmetical, statistical or probabilistic rules, to complex models based on artificial intelligence and data mining algorithms. In this paper, an application of two spatial integration methods based on multiclass weighted sum and multiple logistic regression for exploration of metallic deposits