ORE BELTS OF THE BAIKAL-TRANSBAIKAL REGION. PART II

The Purpose of the paper is to identify and describe the ore belts of intraplate tectonic environments on the territory of Central, Southern and Eastern Transbaikalia. Results. In earlier works we have identified and described metallogenic belts of intraplate nature. This article deals with the ore belts as their constituents. Within the Chikoy-Shilkinsky belt we distinguish Chikoy, Onon-Turinsky, Agin, Nercha-Tungir, Shilka-Amazar ore belts. The Kerulensko-Argunsky metallogenic belt includes the Priargunsky and Gazimur-Uryumkan ore belts. Geodynamic conditions are determined by the formation of deposits in the belts, the foundation of which is made up of terranes of craton, oceanic and other nature. The cross-linking and overlapping complexes that are predominantly of Caledonian, Hercynian age are represented by volcanic, plutonic, terrigenous-carbonate formations; intraplate basically Cimmerian rock complexes refer to volcanic-plutonic and terrigenous formations of riftogenic zones. Ore zones of intraplate environments feature a wide range of deposits: tin, tungsten, gold, molybdenum, uranium, fluorite, polymetals. The hydrothermal ore formation processes of the Mesozoic metallogenic epoch prevailed. Conclusions. Most of the ore clusters and fields of intraplate belts are included in magmatogene-ore systems of plutonic or volcanic-plutonic types associated with fault zones. Under complex combination of microterranes and cross-linking complexes favorable for hydrothermal ore formation conditions predominantly took place in ancient hard blocks where deep splits were formed. The latter controlled magmatism and ore deposition (Muya, Urulungui and other micro-terrains).

metallogenic zoning, ore belts, intraplate geodynamic conditions, ore clusters, deposits of rare, noble and non-ferrous metals

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