A new model of geological structure of the southern zone of early Proterozoic Pechenga-Varzuga greenstone belt (Kola peninsula)

A new model of geological structure for the Southern zone of the Early Proterozoic Pechenga-Varzuga Greenstone Belt (PVB) is proposed. In the article arguments are given that at the final stages of evolution in the Southern zone a young Svecofennian-Vepsian Volcanic Belt was formed, in many respects analogous to the volcanic belts of the Phanerozoic. This new approach to the PVB structure is important from both a geological and a metallogenic point of view, since deposits of a wide range of ore-bearing elements are associated with volcanic belts: Au, Ag, PGE, Sn, Bi, Sb, Pb, Zn, etc. The model is based on the results of the author’s mapping of various volcanic-tectonic structures of the region. In the Southern-Pechenga zone of PVB, an early group of linear Svecofennian volcano-tectonic structures and a later group of subisometric Vepsian volcanic structures were identified. In the Southern-Imandra-Varzuga zone, the volcano-tectonic Svecofennian structures are represented by the Early-Svecofennian linear and Late-Svecofennian subisometric varieties.