Due to the wide variety of parameters of images obtained from different satellites, new possibilities of their computer processing for solving geological problems open up. The paper presents methods are used to interpretation of satellite images for geological mapping of northern territories, where a number of geological exploration work is limited to the absence of snow and is very expensive. Landsat TM were selected as the analyzed satellite images. Satellite images were processed using methods built into ArcGIS software. As a result, the possibilities of using computer processing of satellite images for geological mapping and the accuracy of satellite imagery were evaluated. © 2021, Univelt Inc. All rights reserved.