On the deep structure of the Pechenga structural zone based on geophysical data

Abstract

The analysis of geophysical studies carried out in recent years within the Pechenga structural zone makes it possible, taking into account the available geological data, to illuminate its deep geological structure. Most researchers (G. T. Makeenko, L. Y. Kharitonov, N. M. Parfenenko) present the structural zone as a synclinorium composed of the Tundra and Pechenga series of the Lower and Middle Proterozoic. The rocks of the Pechenga series, composing the core of the structure, are represented by a sedimentary-volcanogenic complex consisting mainly of four complex effusive covers interspersed with sedimentary rocks. The most distinct among the sedimentary formations is the phyllite horizon, which hosts all the hyperbasite intrusions represented by serpentinites, peridotites and pyroxenites.