Modern geodynamic systems of the Urals are studied in connection with the uneven distribution of seismic activity. The neotectonic zoning and geodynamic conditions of its formation in the Southern and Middle Urals and adjacent platform territories were studied in connection with the Katav-Ivanovo mediummagnitude earthquake occurred in 2018. The epicenter was located outside the known zones of possible seismic sources, which required additional research to determine the causes of the earthquake. As a result of near-surface and deep research the Uraltau-Magnitogorsk and Osinsko-Bolsheusinskaya geodynamic systems have been established, which are the cause of the transverse segmentation of the Urals and, possibly, one of the factors of seismic activity. The geodynamic systems are inconsistently articulated with each other with the development of the Birsko-Karatau geodynamically active zone and the Katav-Satka interference zone. The earthquake is associated with the Katav-Satka interference zone. The interference zone has been investigated with respect to fracturing and slickenlines. Orientations of modern stresses induced from the active regions are estimated. Modern stresses are the reason for the activation of the Zilmerdak from the beginning of the Late Paleozoic overstep and, as a consequence, the Katav-Ivanov earthquake. Earthquakes caused the development of secondary dangerous seismogenic phenomena and deformation of buildings.

The article deals with the internal deep structure of the earth's crust of the East European platform and the surface of the mantle lithosphere. The presented charts of the three main layers of the earth's crust — the lower, middle and upper and the surface of the mantle lithosphere — for the first time identified deformation by changing the thickness of the layers. Deformations are compared on all layers that allowed to allot the active center, the main (through) and local (developed in separate layers) areas. The boundaries of these regions are active zones of different ranks. The observed end-to-end development of strain from layer to layer or expression of some of them only in separate layers indicates on the sub-horizontal stratification and vertical divisibility of the earth's crust. Deformations of the deep layers are compared with the latest near-surface platform structures. This made it possible to establish a connection of near-surface deformations with deep ones and to consider the latter as the latest. These studies are relevant for solving fundamental problems of the origin of new structures and a number of practical problems.

In connection with the construction of industrial centers on the territory of the Noginsko-Klyazminsky district, we conducted out material-structural, structural-geomorphological (neotectonic) and geodynamic studies. Studies have revealed a weak protection of this territory from irrational use. The buried limestone surface is characterized by excessive fissuring and powerful weathering, and limestone is cavernous, which indicates the development of leaching processes.Thin and predominantly sandy composition of Quaternary deposits, overlying bedrock, is permeable to atmospheric and surface sediments, including technologically polluted runoff. Closed depressions, funnels, subsidence, flooding, etc. were found in the relief.Changes in the terrain under construction adversely affect the geological environment, since this leads to a point-like pollution of groundwater near to the surface, and the barrage effect - to disruption of the groundwater flow.These features of the geological structure are unfavorable for placement on the territory of Noginsk and, in the valley of the river Vassa industrial centers.

Рассматривается новейшая структура территории Верхнекамского месторождения калийных солей (ВКМКС), которая может влиять на современное состояние соляной залежи и быть одной из причин происходящих негативных природнотехногенных процессов. На основании структурно-геодинамических исследований в пределах новейшего Соликамского поднятия выделены три неотектонические области, Северная, Центральная и Южная, отличающиеся типом новейших структур, геодинамическими условиями их формирования и степенью наследования соляных структур. Оценено происхождение новейших структур, которое связывается с латеральным СЗ-ЮВ сжатием, при котором формируются обратные соотношения разновозрастных структур и происходит активизация древних разломов. Отмечается, что для предупреждения катастрофических провалов и опасных горно-геологических явлений необходимы учет и оценка не только древних герцинских дислокаций, но и неотектонических структур и геодинамических условий их формирования.

Authors developed a geoinformation(GIS) method considering the degree of disagreement between the key horizons of the different ages for the detection and evaluation of the subhorizontal geodynamic active zones at the platforms. The method is based on the analysis of the digital elevation models and the model of detection of the azimuthal and angular displacements zones. The allocation graphics of these zones indicate a heterogeneous structure of the key horizons, which is the reason for the development of subhorizontal geodynamic active zones. It is assumed, the greater the disagreement between the surfaces of the different age, the higher the probability of the development of the zones which might be dangerous by causing the activation of geological processes.

The neotectonic structures in the southwest limb of the Voronezh Anteclise have been studied; they are very gentle bends of positive (uplift) and negative (depression) types and occur as deformations of the base of the modern Poltava Formation. These structures are characteristically pronouncedly asymmetric with the gently dipping northern limbs and steep southern ones. In order to determine the geodynamic setting of formation of these structures lineaments and rock cleavage were studied. The Seym depression is considered to be a tectonically active zone that divides two areas in which the modern structures are formed by forces of different natures.

The neotectonic structures of the Lower Oka (Nizhneokskii) Region formed under different geo-dynamic conditions. This is attested by the morphology, orientation, internal structure, and jointing of the structures. The Oka-Tsna arc formed under the effect of tension from an inner source on the one hand and stress from the Alpian belt on the other hand. The latitudinally-oriented structures of the northwestern slope of the Tokmovo arc emerged as a result of uplift and widening. Both types of structure are combined within the limits of the Oka-Murom trough, which is a geodynamically active zone.