A general geochemical study of Poland (Lis, Pasieczna, 1995) has shown that the highest environmental contamination of soils, aquatic sediments, and surface waters occurs in the Silesian region. In 1996, work on the Detailed Geochemical Map of Upper Silesia, scale 1: 25,000, began in this area, starting with the development of the pilot sheet Sławków M-34-63-B-b (Lis, Pasieczna, 1999). Geochemical studies in the Siewierz M-34-51-C-b map sheet area are a continuation of detailed mapping work conducted systematically by the Polish Geological Institute – National Research Institute and financed by the National Fund for Environmental Protection and Water Management after approval of the Ministry of Climate and Environment.

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