Geodynamically active structures of western flank of talnakh orogenic system

The problems of forecasting and diagnostics of geodynamic fields during development of mineral deposits are addressed, allowing to estimate the general character of geomechanical and geodynamic processes in the rock mass. The boundaries of geodynamically active structures have been identified within the deposit with account for the hierarchical structure of morphological elements of tectonic faults in the host rocks and ore-bearing rock mass, as well as their formation conditions in the fields of various vector stresses. Based on analysis of geological and structural positions of the field, we revealed marking signs of boundaries of the active geodynamic stress zones, where during the anthropogenic activity rock bursts, cavity formation and loss of reserves are observed. The dominating Early Paleozoic structural elements in the geological settings, complicated with plicative and disjunctive forms of the Late Paleozoic-Early Mesozoic tectonic cycle, are considered as additional features of active geodynamic structures. A spatial correlation between the disjunctive deformations in the ore-bearing zone and the host rock was revealed, especially in conditions of packed anticlines and synclines. Gravitational and shear stresses in the rock mass, caused by lava flows and the rotational movement of the lithosphere, have initiated the formation of structural forms of the fault tectonics which can be correlated with horst-anticlines (complex anticlines) in plastic Devonian rocks that host the ore-bearing intrusion, and in the intrusion itself. The spatial correlation of this structure with the zone of seismic activity is observed. © 2020, Scientific and Industrial company 'Gemos Ltd.'. All rights reserved.