The Pechenga-Allarechensk nickel structural zone of the Kola Peninsula is one of the few ore districts of the USSR, where ore seismic survey by the reflected wave method (RWM) for solving structural problems began to be applied for the first time and has been systematically carried out for a long time.....

The solution of the important question about the accuracy of seismic boundaries construction not only in the Pechenga, but also in other ore areas is complicated by the complex character of the registered wave fields and the change of velocity sections over the area, which is explained by the strong dislocation of folded structures composed of different complexes of high-velocity crystalline and metamorphosed rocks.

Seismic studies within the Pechenga structure are carried out by the reflected wave method along systems of longitudinal profiles combined with spatial observations. The seismic profiles are oriented, as a rule, crosswise to the prevailing strike of the rocks.

Seismic materials obtained during detailed studies in the Pechenga district of the Murmansk region are characterized by the presence of a large number of unextended in-phase axes, on which subsequently reflecting elements are constructed by the apparent velocity method...