Influence of local seismotectonic and engineering-geological conditions on seismic danger of territories (exemplified by a construction site in Uzhgorod city)

Objective. To identify the location of potentially active seismic zones in which local earthquakes may occur. To evaluate the predicted seismic shaking intensity (in MSK-64 scale points) considering impacts associated with the local tectonic and engineering-geological conditions of the study site. Methodology.

Nature of the provenance and tectonic setting of oil shale (Middle Eocene) in the Greater Caucasus southeastern plunge

Objective. The protolith and tectonic settings of the Middle Eocene oil shale sampled from the outcrops and ejected products of mud volcanoes in the Greater Caucasus southeastern plunge were determined using bulk rock geochemistry data. The obtained results were adapted to the palaeogeodynamic conditions of the study areas. Method. The concentrations of element content in the samples were measured by “S8 TIGER Series 2 WDXRF” and “Agilent 7700 Series ICP-MS” mass spectrometers.

Tectonics and geodynamics of the Ukrainian Carpathians

Integrated analysis based on spatial and temporal correlation of sedimentation, tectonic movements, magmatism and metamorphism made it possible to establish the main geodynamic peculiarities of geological history of the Carpathians during the Alpine tectonic epoch. Two historical turning points - the beginning of Cretaceous and the beginning of Miocene - are the most significant for the whole area of the Carpathian Arc.

Anomalous magnetic field and their correlation with a deep structure and tectonics of Ukrainian Carpathians

Peculiarities of anomalous magnetic field in Ukrainian Carpathians territory were considered. It was stated that on the base of magnetic anomalies characters in can be divided in 4 zones that generally matches with main tectonic elements of the region (in SW – NE direction): Transcarpathian trough, Folded Carpathians, Precarpathian trough, SE edge of East-European platform. It was concluded that the peculiarities of geological structure and tectonics of Carpathians are reflected in anomalous magnetic field of the region.

Tectonic zoning of the Carpathians in term`s of the terrane tectonics article 2. The Flysch Carpathian – ancient accretionary prism

The tectonic units of the Carpathians are considered in terms of the terrane analysis. The Flysch Carpathian nappes and Samdir molasse unit are regarded as the ancient accretionary prism. Growing the prism was caused by the Alpine subduction of the Carpathian Flysch basin basement beneath both the ALCAPA and Tisza-Dacia terranes. At the Cretaceous-Paleogene time the Fore-Marmarosh flysch prism was formed in the front of TiszaDacia terrane and the Pieniny Klippen Belt – Monastyrets–Magura – Duclya wedge was builded in the forland of ALCAPA one.

Tectonic zoning of the Carpathians in terms of the terrane tectonics section 1. Main units of the Carpathian building

The tectonic units of the Carpathians are considered in terms of the terrain analysis. Carpathathian orogen is build up of three main elements: microcontinental terrains, sutures and flysch-molasse accretionary prism. There are two main terrains: a northern ALCAPA and a southern Tisza-Dacia. Sutures (Fore-Marmarosh suture, Pieniny Klippen Belt and others), marking the ancient oceanic basins, bound these terrains. The Flysch Carpathians are regarded as the Cretaceous-Neogene accretionary prism.

Geological structure of Peninic nappe of Ukrainian Carpathians

Purpose. The aim of the research is to study the geological structure of the Peninic nappe of the Ukrainian Carpathians taking into account new data of geology and geophysics. Methodology. The research methodology includes a detailed comprehensive analysis of geological survey data, prospecting, drilling, and geophysical studies of the Peninic nappe. Results. The Peninic nappe include the rocks of Triassic – Oligocene ages is the South-West unit of the Outer (Flysch) Carpathians.

Structure of the lateral extrusion in the Carpathians

Purpose. The aim is to identify the structural forms of the lateral extrusion in the Western Ukrainian Carpathians and to create the preliminary conceptual model of its forming. Methodology. Methods of the geological mapping and structural analysis were used. The analysis of the fault-related folds and others deformations including melange, restoration of the stress fields by the standard method using the conjugate shear fractures and decryption of the satellite imagery played an important role especially in the diagnosis of the strike-slip zones.

Geodynamic and geophysical effects in the physical models of interactions between the Earth’s structural shells

Perspectives of the creating of the new physical models concerning the structure of the Earth, their evolution and methodology of the structure classification and parameter measuring of the Earth’s physical fields are analyzed. It is pointed out that investigation of the deep structure, composition and geodynamics of the continental and oceanic lithosphere gives the possibility to distinguish the system connected with global processes of Earth’s development (rifts, uncompensated deeps, continents, oceans). 

Geodynamics, tectonics and seismicity of Carpathian region of Ukraine

Purpose. The purpose of researches – to analyze the characteristics of modern geodynamics, tectonics and seismicity of Carpathian region of Ukraine and its components – the Folded Carpathians, Transcarpathians and Precarpathians. Methodology. The methodology includes a detailed complex analysis of the deep structure and seismotectonic activity in the region and its separate zones on the basis of specially developed methods of refinement the coordinates and depth of local earthquakes sources and complex of geological and geophysical data. Results.