Late Paleozoic rock deformation of the Kurai block: Structural-kinematic analysis (upper Kuraika River, Gorny Altai, Russia)

Abstract

© 2019 Institute of the Earth's Crust. All rights reserved. In the Kurai ridge located in the southeastern Gorny Altai (Altai Mountains, Russia) metamorphic rocks of the Kurai complex are widely developed: granite-gneisses, crystalline schists and amphibolites, including widespread Early Carboniferous mylonites and blastomylonites. Oriented samples of blastomylonites were taken from the upper reaches of the Kuraika river for the microstructural study aimed to determine the kinematics of movements. The analyses of thin cut samples show structural-kinematic indicators that suggest two deformation events (left-lateral shearing, then right-lateral shearing).