Objective. To elaborate the geological structure and stratigraphy of the Eocene black shale formation of the Silesian Nappe, to recreate the depths and processes of its accumulation, and to reconstruct paleogeography and geodynamics of the Eocene sedimentatary Silesian Sub-basin. Methodology includes geological mapping, studing the lithostratigraphy and sedimentological features of the deposits (elements of Bouma sequence et al.) in a natural sedimentary succession, as well as paleobathimetric analyses of the foraminiferal assemblages.
Purpose. The aim of the study is to analyze the features of the exotic conglomerates composition and their probable sources of origin in the Ukrainian Carpathians as well as to create a geological sketch of their distribution. Methodology. The methodology includes a detailed complex analysis and synthesis of available actual geological material, as well as comparison of the obtained data.
Historical aspects of contact zone between two geological megastructures – Easteuropean platform and Centraleuropean geological structure were considered. Structural peculiarities of the zone were analyzed on the base of recent international investigations. The location of the zone on the territory of Western Ukraine was stated.
Purpose. The aim of this work is to trace large structural-tectonic elements within the Western region of Ukraine according to the characteristic signs of their manifestation in the anomalies of gravity and magnetic fields and the construction of regional tectonics schemes based on gravity and magnetometric materials. Methodology. The research method is based on a qualitative interpretation of the observed gravitational and magnetic fields.
The article is devoted to importance of joints which are the most widespread structural elements of the earth's crust and are in all lithologic types of mountain breeds, for the study of the tense state and mechanical conduct of mountain breeds. Joints are the perceptible indicators of tensions at geotectonics development of territory. Determination of the real dependence of correlations between joints and reasons of their origin enables to use joints for paleotectonic reconstructions, and also at created models of reservoirs in oil geology.
In the article the first results of researches of joints and slickensides from outcroppings in the valley of the Sukil River are given. In 37 points of the flysh deposits of thrusts: Orivska, Skolivska and Parashka about 1100 intentions of joints and 90 intentions of slickensides are executed in the different deposits strata: from the Upper Cretaceous to Oligocene formations.
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.
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.