The study of the deep structure of the Baltic Shield is of great importance for the problem of the evolution of the Earth's crust of the continents and especially for Europe.
Ancient Precambrian shields are the largest geostructural elements of our planet, in the depths of which numerous mineral deposits are widely developed. Within the shields, Precambrian crystalline rocks are exposed on the day surface and are therefore most accessible for various kinds of geologic and geophysical studies.
