D.D. Sekerina, E.A. Dergileva, A.S. Egorov (SPMU)

LOCATION PATTERNS OF CALEDONIAN AND HERCYNIAN OROGENY STRUCTURES, RUDNY ALTAI

The authors studied the sequence of major elements formation in this region during Early Caledonian, Late Caledonian, and Hercynian orogenic processes to understand location patterns of Rudny Altai structures in the Altai-Sayan Fold Area. Geological and geophysical constructions were made by the authors using the geophysical «radial-zonal model of the earth's crust» [24]. Blocks with continental crust and interblock zones separating them were identified based on a qualitative interpretation of geophysical fields and their transformations, including using lineament analysis. At the stage of geotectonic interpretation of the data set, within the concept of lithospheric plate tectonics, geophysical blocks are interpreted as paleoplates with continental crust; sutures, rifts and regional shears correspond to interblock zones. Constructions in the lateral dimension are accompanied by a deep geological and geophysical (geotectonic) section along a fragment of the Basalt regional geophysical profile. The performed paleoreconstructions allow the solution of the problem of clarifying the geodynamic processes that led to the formation of structures and controlled the location features of endogenous mineralization in the Zmeinogorsk ore district.
Keywords: Gorny and Rudny Altai, deep crustal structure, tectonic zoning, paleoreconstructions.