A new look at the structure of the Bobruisk and Krasnopolsk graben-synclines. Mapping possibilities in closed territories based on the geophysical and drilling data

The article considers the structure of the Bobruisk-Klimovichy geophysical megaanomaly. The nature of the negative field values of the Bobruisk and Krasnapolle structures in west and east of the megaanomaly is shown not only as impersonal contour areas of magnetic objects on the periphery of the belt, but also as features of their geological structure. The negative field of the Bobruisk Structure is associated with granitoids of the Zhitkovichy Complex, to a lesser extent with non-magnetic formations of the Bobruisk Series and sandy deposits of the Riphean. The presence of a large Bobruisk-Boretsk Batholith of granitoids – an analogue of the Korosten Pluton is assumed. The Bobruisk Graben-Syncline has slightly different outlines than previously assumed. The negative field of the Krasnapolle Structure is to some extent associated with the graben-syncline on the surface of the crystalline basement, filled with sandstones of the Sherovichy Series of the Riphean.