The upper part of the Earth's crust in the vast majority of cases serves to some degree as a kind of "second wire" for the whole variety of electric power circuits used in human life.

For a number of years LMI in cooperation with South Kazakhstan TOMGP conducts large-scale studies by dipole inductive profiling (DIP) on polymetallic deposits of Central Kazakhstan.

A closed loop fed with alternating current is one of the main ways of excitation of the electromagnetic field in the induction method of electrical exploration. The degree of excitation of the desired object is known to be one of the main factors in improving the efficiency of the method.

Most methods and modifications of electrical exploration are based on the study of fields generated by special (own) sources. In this case, the fields of extraneous sources are a kind of interference, limiting to a greater or lesser extent the effectiveness of electrical exploration methods ...

Dipole inductive profiling with amplitude-phase measurements (DIP) has been successfully applied in the search for objects of high electrical conductivity. However, as it follows from the laws of the electromagnetic field and the results obtained in field studies, the DIP method also can be isolated and studied objects that differed in magnetic permeability. ...

The determining factor in the formation of the resulting anomalous curve over a complex electrically conductive zone is the distance between the individual layers composing the zone. In this case, depending on the distance, the main changes in the anomalous values, obviously, will occur in the points of the interval between the layers - places of the strongest mutual influence of neighboring layers. Therefore, it is sufficient to establish the regularities of these changes on the example of two strata. ...

The ore occurrence is located on the shore of the White Sea. Structurally, it is located within a narrow graben-like synclinal fold, confined to the western wing of the Primorsky anticlinorium and composed of Archean metamorphic rocks: garnet, feldspar and monomineral amphibolites interbedded with biotite-amphibole, biotite and zoisite-biotite-amphibole gneisses.

A significant achievement in the development of AC electrical exploration is the development of low-frequency inductive methods with amplitude-phase measurements. The use of optimal frequencies for solving a particular geological problem and measurement, along with amplitude, time (phase) characteristic of the field certainly contributes to improving the efficiency of AC electrical exploration.

The search for ore bodies of increased electrical conductivity by the method of dipole inductive profiling with amplitude-phase measurements is based on the study of changes in the magnetic field of a harmonic magnetic dipole depending on its movement along the profile (relative to the ore body).

Precambrian platforms and shields, occupying the main part of the territory of the continents and storing in their bowels huge reserves of minerals, are not sufficiently studied geologically. Dissection and correlation of Precambrian strata by classical methods of paleontological, petrographic and structural-geological analysis are extremely difficult, as deeply metamorphosed and granitized rocks in many cases retain only relict textural and lithological features of the original geological formations. Geophysical methods, in particular, gravity and magnetic exploration, have great potential in studying the structure and reconstructing the history of development of Precambrian shields.

Under dipole inductive profiling (DIP) is understood a sequential study of the amplitude and phase of the magnetic field of a harmonic magnetic dipole, performed with simultaneous movement of the dipole generator and dipole-measuring device (measuring point) along a certain direction (profile) on the surface of the earth. The reciprocal spatial position of the dipoles (generator and receiver frames) is kept constant during profiling, so the relative field changes at the measurement points are only a function of the geoelectric cross sections of the areas traversed by the installation...

Problems related to the study of electromagnetic fields are universally difficult, and in application to geology, due to the diversity of parameters, often cannot be solved theoretically. In this case modeling is the only way to study the regularities of the solution. In order that the results of experience on models can be transferred to a specific geological case, the setting of the experiment and the processing of its results should be carried out under the conditions of similarity.