Scientific publications

Based on detailed mapping, the geological structure, mineralogical composition, structural evolution and metamorphism of a fragment of a tectonic melange zone are discussed. Gentle, overthrust-type bedding with a shear deformation style, typical of such zones, was recognized. The units were transported SSW. The heterogeneous clastic portion of the zone consists of amphibolites, apoandesites, marbles, alumina and other gneisses metamorphosed at a temperature of 689 °C and a pressure of 8,6 kbar, which is lower than the metamorphic grade of the matrix (average temperatures of 700–800 °C and pressures of up to 11,8 kbar) composed of tectonometamorphic rocks. The latter are syntectonic migmatites that rim lenses and fragments of matrix rocks. They were formed by intense tectonic movement after heterogeneous substrate and were affected by vigorous non-equilibrium fluid flow and felsic migmatizing melt.