MAJOR GEOLOGICAL FEATURES OF THE ALTAI-SAYAN FOLDED REGION (TECTONIC ZONING, STRATIGRAPHY, MAGMATISM, GEOLOGICAL EVOLUTION)

G. A. Babin 1, 2., S. P. Shokalsky 1

1 A.P. Karpinsky Russian Geological Research Institute, St Petersburg, Russia; 2 Siberian Research Institute of Geology, Geophysics and Mineral Resources, Novosibirsk, Russia

The paper provides the results of compilation of geological data on the Altai-Sayan folded region. Taking into account the current views, the authors have characterised major features of stratigraphy, magmatism, metamorphism, and tectonics, and drawn up stages of geological evolution of the region. Stratigraphic and tectonic maps were complimented with a structural-tectonic chart and tectonic-stratigraphic columns. In terms of tectonics, the Altai-Sayan folded region is divided into six folded systems different in age, composition, and tectonic nature of structural and compositional complexes, occurrence time, dislocation styles, and prevailing structural trends. There are 11 geological evolution stages, which have been interpreted from the integrated analysis of composition and space-time correlation of structural and compositional complexes.

Keywords: Altai-Sayan folded region, stratigraphy, magmatism, metamorphism, tectonics.

DOI 10.20403/2078-0575-2017-6s-19-37