Plate-tectonic metallogeny Ural-Timan-Paleoasian segment of the Eurasia on the base of mobilistic reconstructions

2017

Литосфера, Vol 17, Iss 4, Pp 5-25 (2017)

General positions on plate-tectonic metallogeny are presented and the grounds for singling out the metallogenic factors of orogenic systems are given. Mobilistic paradigma corresponds to the genotype of orogens and belts which being formed at the expense of oceanic basin transformations. Their alternative character for the factors of fixistic constructions is stressed. The conclusion is made that as a theoretical basis for the analysis of orogen system metallogeny - that is the metallogeny of considering in the paper segment - are the metallogenic factors connected with processes of movement and dislocation of lithospheric plates, geodynamical regimes of riftogenic extension and spreading of plates, geodynamical environments of subduction, accretion and collision. A decisive role of the factor of movement and dislocation of lithospheric plates makes it possible to introduce for this type of metallogeny the denomination of plate-tectonic metallogeny . A comparative analysis of metallogeny of modern oceanic basins and of epioceanic orogens showed that metallogenetic factors of geodynamical environments characterize their ore specialization, while the accretions and collisions define the location of ore concentrations, determining, in the long run, combination in orogenic systems of pre-accretion, accretion and post-accretion metallogenic elements. On the given basis taking into account regional particularities the metallogeny analysis of Ural-Timan-Paleoasian segment of Eurasia has been made. Diagrams of metallogeny and the segment metallogenic zoning were suggested.

article

English
Russian

A.N. Zavaritsky Institute of Geology and Geochemistry, 2017.

мобилизм, геодинамика, плитотектоника, орогенная система, ороген, аккреция, коллизия, металлогенический фактор, плитотектоническая металлогения, металлогеническая эпоха, mobilism, geodynamics, plate-tectonics, orogenic system, orogen, accretion, collision, metallogenic factor, plate-tectonic metallogeny, metallogenic epoch, Engineering geology. Rock mechanics. Soil mechanics. Underground construction, TA703-712