Ukrainian Carpathians

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.

Series of the finite-element 2D-models of thrusts in the flysh basin on the base of elastoplasticity equations for piecewise-homogeneous medium are proposed. Using computer modelling the formation mechanism of thrusting in the Ukrainian Carpathians during Early Cretaceous is improved. Within the framework of the complex analysis the fields of calculated stresses and strains of the sedimentary rocks in the collision zone are studied. The place of first thrusts with general Carpathian orientation, the role of tectonic displacements and paleo-basin basement morphology are determined.

Purpose. Reconstruction of paleostress fields, as evidence of many publications of different parts of the Carpathians, can carried out through research the most common brittle and semibrittle structure – joints, slickensides, faults, regional and local folds, or complex research of joints and slickensides. The purpose of this paper is to reconstruct the paleostress fields and deformation regimes of flysch deposits in Opir River Valley using complex analysis of joints and slickensides.

Purpose of investigations – to ascertain the position of Ukrainian part of the Carpathian geosyncline in the common structure of the Pannonian-Carpathian-Dinarides region (Pancardi) at different stages of the development. Methodology. Integrated analysis of the peculiarities of different-age magmatism together with other geological-geophysical material and reconstruction of the structure and geodynamics of both the whole Pancardi and the Ukrainian Carpathian in particular at different stages of alpine development. Findings.

Purpose. The purpose of research is to identify the geological and tectonic nature complex morphology intensive gravimagnetic anomaly in the southwest Kolomiyskogo paleovalleys, which is located within the Precarpathians trough Ukrainian Carpathians. Methodology.

Isostatic compensation of the Earth crust is discussed. Using the ETOPO1 digital elevation model and gravity data a Moho model and isostatic anomalies field was constructed for the area of Ukrainian Carpathians, bounded by: φ=47.30÷50,300 N, λ=22÷270 E. Technique for isostatic anomalies calculation is described. Relation between the isostatic anomalies and main tectonics units of region is defined.

Significance of magmatism as a marker of geodynamic processes of the past geological epochs is considered. A scheme of phased studies of magmatic rocks is given as well as their generalization and connection to tectonic structures. On the basis of formation analysis and mineral-geochemical indicators of the Cainozoic volcanites it is proved that geological development of the Ukrainian Carpathians during Cainozoic go on a collision geodynamic regime type.

Purpose. Computer modelling in the framework of continuum mechanics is a powerful tool to obtain qualitative and quantitative deformation parameters in the geological media. The purpose of this work was to study stress and strain fields of the sedimentary autochthonous complex owing to moving a thrust wedge. Subject of inquiry is layered rocks with different geometrical and mechanical properties bounded by the basement of the peleobasin and compressive thrust wedge taking into account the gravitational forces and contact frictions. Methodology.

A new area is suggested for hydrocarbon explorations in the margin shaft of the Eurasian platform, in the Transcarpathians. The productive systems: Devonian, Carboniferous, Jurassic, Cretaceous, Paleogene, Neogene. Traps of various types are possible.

Purpose. Statistical features and the distribution of the data orientation over 8 000 tectonic joints from flysch and molasses deposits of Skyba and Boryslav-Pokuttya nappes with some statistical parameters (K, C) are demonstrated. The main system of joints and the ratio of dip angles are analyzed. Relationship between statistical features of joints, the age of rocks, the tectonic position and the geological history of the Ukrainian Carpathians are defined.  Methodology.