**5. Conclusion**

On the basis of theoretical positions of mobilism, the BA represents a single system of parallel ore belts of regional ranks in the northwestern direction (Rudnoaltayskiy, Kalba-Narymsky, Zapadno-Kalkinsky and Zharma-Saursky) formed as a result of the Hercynian collision of Kazakhstan and Siberian lithospheric plates and the degradation of the Irtysh-Zaisan paleobasin (parts of the Paleo-Asiatic ocean). According to geological and geophysical data, the ore belts are characterized by a large-scale development along their length and depth, which reflects their high material and energy potential and opens new prospects for forecasting and prospecting works within their boundaries.

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In each ore belt, the maximum mineralization productivity was manifested in certain geodynamic settings and regimes. In the Rudnyi Altai, the main pyrite-polymetallic deposits were formed in a riftogenic geodynamic environment, genetically related to the Devonian basaltandesite-rhyolite volcanism (D<sup>1</sup> e-D<sup>3</sup> fr) and were controlled by a system of echeloned deep faults in the northwestern direction.

Gold-bearing deposits of Western Kalba, the Southern Altai and Zharma-Saur were formed in the Middle Gerzinian stage (C<sup>1</sup> -C<sup>3</sup> ) in a collision geodynamic situation under conditions of horizontal displacement, jointing and turning of Kazakhstan and Siberian lithospheric plates, manifestations of main folding phases, thrust and melange structures and introduction of gold-bearing small intrusions and dikes (C2–3-C<sup>3</sup> ). The ore-controlling role of diagonal deep faults system of mantle-crustal location and the regmatic system of renewed sublatitudinal deep faults in location of gold ore objects has been determined. The main gold deposits (Bakyrchik, Bolshevik, Suzdal, Kuludgun, Maralikha, etc.) were located in the Zaisan suture zone forming East Kazakhstan gold belt of regional ranks.

Rare-metal deposits are formed mainly in the Hercynian cycle in post-collision (orogenic) geodynamic situation as a result of vertical arched motions and a powerful development of Permian granitoid magmatism. They are spatially placed in granitoid belts of the northwestern direction formed in tectonically weakened blocks of EC of increased syality. The main importance is given to rare-metal and rare-earth deposits (pegmatite, albitite-riebeckite, etc.) formed in certain nonstandard geological settings and nonequilibrium PT conditions for granite massif formation.

As a result of study, regular relationships of tectonic and metallogenic development of geological structures in East Kazakhstan have been determined. The revealed mineralogical specialization of geodynamic environments is one of the main methods for forecasting and searching for new deposits along with detailed structural and physical studies of geological formations. The setting of detailed prognostic-metallogenic works in selected perspective structures at modern scientific and technical level is recommended for forecast implementation.
