This paper deals with the complex geophysical studies carried out to determine the nature of the intense magnetic anomaly identified by the results of ground surveys on the right bank of the river Slushka on the territory of Yukhnovsky district of Kaluga region. Integrated interpretation of geophysical data and laboratory core measurements allowed to define the nature and parameters of the anomalous object located in the upper part of the section and presented by loam containing such magnetic minerals as greigite, pyrrhotite and magnetite.
