Anomalous changes in concentrations due to scattering halos are often comparable in their parameters with fluctuations of the geochemical background and with its changes due to the change of rocks. In these cases, it is necessary to use such a method of processing the survey results, in which the geochemical background, carrying information about the geological structure or regional geochemical patterns, is distinguished from the field of measured concentrations, and local anomalies of prospecting interest are identified