Metallogeny of the Central-Asian orogenec belt

The specific features of the Central-Asian orogenic belt (CAOB) and margina l structures of the North-Asian craton ate considered on the basis of analy sis of lithospheric-plate tectonics and terrain analysis. The general metal logenic development of the CAOB is determined by the long-term formation of ifs structures, occurence of island arcs and continental margins of differ ent ages, and extensive development of the postaccretional tectonomagmatic processes. As the main geodynamic settings determining the metallogeny of t he CAOB, the marginal structures of the craton defining the position of the Riphean pericratonic metallogenic belt and the Early Paleozoic and Middle Paleozoic island-are systems and active continental margins have been chara cterized. It is shown that the Late Paleozoic-Mesozoic stage of formation o f the intraplate riftogenic - strike-slip structures and active continental margin of the Mongolo-Okhotsk paleooceanic basin played an important role in the metallogenic evolution of the CAOB. Taking into account the geodynam ic settings, the authors carried out metallogenic zonation with separation of the main metallogenic belts and zones where the most considerable ore de posits are localized.