Geophysical processes and biosphere: article

Аnnotation: The controversial problem of genetic relationships of shallow magmatogenic ore deposits with spatially associated complexes of small intrusive bodies or separate syn-ore bodies is discussed in this article. Materials of field study by the authors of four epithermal gold deposits of the Amur region were used. These materials are supplemented by an analysis of published data on the condi-tions and geological settings of the localization of a number of other epithermal and shallow Cu-Mo-porphyry deposits in various regions of Russia and other countries. Active thermal participa-tion sings of syn-ore stocks and sill in retraction to intrusions and initiation of near-intrusive con-vection of deep-seated fluids during ore formation at epithermal gold deposits of the Amur region (Pokrovskoe, Pioner, Zheltunak, Bamskoe Mnogovershinnoe) were established and confirmed by model experiments. These signs and zoning of metal deposition are also established at epithermal and porphyry deposits in other regions of Russia (Ural, Transbaikalia, Kamchatka) and in other countries. Favorable conditions for ore accumulation have been identified. These conditions are associated with shallow syn-ore small intrusions and magma chambers at 11 characterized depos-its, including large and unique ones (Pioner, Mnogovershinnoe, Bingham, Klaimax).