Abstract:A new digital magnetic map of Slovakia on the scale of 1: 200,000 and 1: 500,000 was compiled at the end of 2008 as the output of database magnetic objects from the whole territory of Slovakia at a scale of 1: 50,000. The variable geological structure of the West Carpathian crust is depicted in the equally variable magnetic field of this region. A sizable number of magnetic anomalies with manifold character have been recognized. The basic anomalies distribution was divided into two groups: anomalies connected with rocks of the pre-Neogene basement and anomalies which originate in Neogene and Quaternary volcanic products. Most of the significant anomalies in the pre-Neogene basement were interpreted, modelled and consequently its geological and tectonic classification was worked out. On the basis of the anomalous field features, the following sources of anomalies have been distinguished: a) known, located on the surface, or at shallow depths verified by boreholes, mainly expressed by simple morphology, b) deep-seated and expressed by complicated morphology, reinterpreted or newly interpreted and also problematic. According to our present knowledge the interpretations are insufficient and remain open for further investigation. The above mentioned sources of magnetic anomalies are classified in terms of tectonic provenience to the main tectonic units.
Abstract:The locality of the northeastern most part of Slovakian Flysch belt belongs to interesting areas in terms of the interpretation of geothermal conditions in mutual relation with the lithosphere structure and their tectonic development. The evaluation of the geothermal energy sources parameters of this locality is likewise worthwhile. The region under study has the centre in position of the borehole Zboj ZB-1 and spreads out Slovakia also in Poland and Ukraine.Our contribution provides the analyses of existing geothermal data enhanced by the construction of temperature field models corresponding to the global and local aspects that influence the temperature and heat flow density distributions. The analyses are related to the structures and effects of separate phenomena along as well as across the Carpathian arc. The model calculations were carried out both by analytical and numerical methods of solving the heat transfer equations including their steady state forms and transient cases too.Besides the regional trend of thermal activity decrease in direction from East-Slovakian Basin to the outer Carpathian units the combined local influences are applied: subsurface thermophysical parameters of rock complexes distributions, non-stationary sources from supposed subvolcanic bodies in close surroundings of borehole Zboj ZB-1, and the effects of the hydrological factors. Considering the observed higher thermal activity in arched zone along the Carpathian structures we discussed the thermal effects of rock complexes supposed as a source of regional Carpathian Conductivity Anomaly and the transfer of heat from East-Slovakian Basin to Outer Carpathian Flysch units. The analysis and the modelling results suggest that the mentioned activity is caused by the influences of source type phenomena mainly related to deep fault systems at the margin of the European Platform. That means the anomalies in heat flow density distribution can reach the value 70 mW/m 2 and more in the zone above the thermally active deep-fault system with the presence of volcanism and hydrothermal activities.
It has been in creas ingly real ised that geo log i cal stor age of CO 2 is a pro spec tive op tion for re duc tion of CO 2 emis sions. The CO 2 geo log i cal stor age po ten tial of sed i men tary bas ins with the ter ri tory of Slovakia, the Czech Re pub lic, Po land and the Bal tic States is here as sessed, and dif fer ent stor age op tions have been con sid ered. The most pro spec tive tech nol ogy is hydro dy namic trap ping in the deep sa line aqui fers. The uti li sa tion of hy dro car bon (HC) fields is con sid ered as a ma ture tech nology; how ever, stor age ca pac i ties are lim ited in the re gion and are mainly re lated to en hanced oil (gas) re cov ery. Pro spec tive res er voirs and traps have been iden ti fied in the Dan ube, Vi enna and East Slovakian Neo gene bas ins, the Neo gene Carpathian Foredeep, the Bo he mian and Fore-Sudetic Up per Pa leo zoic bas ins, the Me so zoic Mid-Pol ish Ba sin and the pericratonic Pa leo zoic Bal tic Ba sin. The to tal stor age ca pac ity of the sed i men tary bas ins is es ti mated to be as much as 10,170 Mt of CO 2 in deep sa line aqui fer struc tures, and 938 Mt CO 2 in the de pleted HC fields. The uti li sa tion of coal seams for CO 2 stor age is re lated to the Up per Silesian Ba sin where CO 2 stor age could be com bined with en hanced re cov ery of coal-bed meth ane.
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