Abstract:The metallurgic industry is one of the main sources of environmental pollution. It emits dust, which contains manganese oxides, iron oxides, zinc and lead oxides that could be deposited in soil. The aim of this study was to determine the influence of the local metallurgical industry on soil contamination with metals released during processing using Pb-210 as a contamination tracer. Soil samples were collected from 19 sites located around the Opole industrial zone, in which, for example, welding and galvanizing companies operate. In the studies, various types of sampling sites were taken into account, such as the forests, meadows, fields and allotment gardens. The activity measurements of Bi-214, Pb-214, Cs-137 and Pb-210 were performed, using a gamma spectrometer. Applying the properties of the latter isotope, the local level of soil contamination was estimated. The results indicated that the metallurgical industry is not a source of environmental pollution in the immediate vicinity. The excessive lead concentrations ranged from 1 Bq/kg d.m. to 100 Bq/kg d.m. and were not strongly correlated with the distances from the presumed source of contamination.

Authors substantiate that this territory in carbon time developed mainly in the alluvial plain situation. Also we analyzed prospective for oil and gas sedimentation environment. The most prospective areas evaluated to be distributed in branched rivers. 

Currently unconventional gas is considered to be coal bed methane, shale gas and tight gas. In our opinion, to this list should be added gas deposits controlled by inner surface unconformities in sedimentary rock complexes. Despite signs of «traditional» reservoirs – corresponding structural forms and others, specific features of their occurrence (under and above the unconformities with predominance of lithologic and stratigraphic factors in the formation of traps) can attribute them to unconventional gas. Even though there are all prerequisites to consider them as common types of deposits, they do not still refer to in integer directed search process. Add to this that these types of traps may also be characterized by the presence of «unconventional» gas properties such as low permeability, porosity, etc. 

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