Geodynamic Factors Of Formation
Geodynamic Factors of Formation
Of the Habitat and Evolution of Biological Organisms of the Black Sea
A.V. Chepizhko, V.I. Samsonov
I.I. Mechnikov National University of Odessa, Ukraine
One of the main objects of inquiry in ecology is the “biosphere”. The concept comprises the layers of atmosphere, water and lithosphere (geological medium). The ecological significance of lithosphere as the biosphere element is determined by its geophysical content, which is affected considerably by technogenic factors. The action off tectonic and geodynamic factors (active breaks, seismicity, present movement of Earth’s crust, etc.) determines the nature of sedimentation, influx and passing of man-made products, the chemical composition of the environment end the energetic structure of a biosphere. Quite important bat not sufficiently studied is the influence caused by non-stationary and irregular geophysics and man-made fields on living organisms. Anomalies of these fields occur mostly in places of active deep breaks. Within these breaks the local (canal) fields of natural and man-made co-operating with the geomagnetic field, and create a very negative, combined, synergetic action on biological organisms. The geodynamic processes in the zones of breaks are accompanied by transformation of mechanical energy into electrical and electromagnetic energy. The electromagnetic irradiation is impulsive at a local scale during relaxation of the excited state of breeds. The zones of active depth breaks are often accompanied by discharges of gas emanations, geochemical anomalies of metals in soils and water creating natural zones ecological discomfort.
The study of a depth geological structure, in particular, the detailed mapping of active deep breaks is necessary as a perspective stage in ecological studies of territories. Very important is the experimental installation recording of energetic activity of breaks and their influence on biological organisms. These studies are carrier out by monitoring of the geological environment by using different methods, and involving specialists from different scientific
direction. Geological, geophysical, biological and ecological information data for the past 40 years have been used. The area of investigation is the Ukrainian sector of the Black Sea continental margin (northwest Black Sea shelf). Scientifically, this is a favorable site for complex study of geotectonic, geodynamic, astrogeophysical and biological processes in them interrelations. A series of depth breaks has been established within the range of the southern and southwestern marginal destructive part of the East-European platform. These breaks of the Proterozoic era are linked with the initial stage of riftogenesis when the Protethys Ocean was formed. Beginning from the Mezozoic period, after the closing of Paleotethys, the territory under consideration underwent compression with the formation of a subcollision area (Preddobrudjie) and parts of the active marginal area (Southern Crimea). Present today are there ancient submeridional breaks of the Precambriam formation, and also, large geological anomalies as horsts and grabens. The degree of power activity of these geological structures and ecological significance should be clarified in future complex investigations.
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