Geophysical research: article

Аnnotation: The paper proposes an algorithm for processing and interpretation of field materials of electrical prospecting, obtained by the long cable method using low-frequency equipment KAN-EMM is presented, which includes several stages. At the first stage, the anomalous values of the horizontal and vertical components of the magnetic field are calculated. At the second stage the full magnetic field vectors are constructed, the coordinates of which are the calculated anomalous values of the components. The next step is to construct normals to vectors and to find their intersection points. Then, the found set of points using the k-means clustering algorithm is divided into groups corresponding to the desired anomalous areas; at the final stage, the boundaries of these areas are highlighted. This algorithm is implemented as a software module “Prognoz” developed by the authors. The developed software module allows to identify locations of anomalous objects in the geological environment, to analyze the obtained locations of low or high electrical resistance obtaining useful geophysical information. Using the “Prognoz” module, field data obtained at the stage of prospecting for gold were processed under conditions of poor geological exploration of the studied area of the Barobinsky (Northern Kazakhstan). Based on the interpretation results, anomalous conduction zones were localized, which are of interest for exploration and are subject to further geological interpretation with the use of additional geological and geophysical information. On the picket 1420 profile 7 was carried out calibration drilling, which showed the presence of mineralization with the presence of gold, which is consistent with the results of the study. The developed software module provides the construction of adequate models of geoelectric sections in the conditions of incomplete geological and geophysical information based on the solution of the inverse task and allows to significantly reduce the time and material costs.