title: Impact of Zn-Pb mining in the Olkusz ore district on the Permian aquifer (SW Poland).
abstract: Long-term extensive mining of Zn-Pb ores in the Olkusz area resulted in significant changes of water table levels and chemical composition of water in all aquifers in this area. Within the Permian aquifer, hydrochemical type of water evolved in two general stages. Short-term effect was freshening in the zones of contact with overlying the Triassic limestones and dolomites. Long-term effect was a change in flow pattern and, as a consequence, an inflow of naturally altered and antropogenically contaminated water from the Triassic aquifer into the Permian complex. This was especially intensive in densely fissured and fault zones. As a result of all these processes, hydrochemical type of water shifted from multi-ion types with various combinations of ions towards higher shares of sulphates, calcium and magnesium.
authors: AGH University, Al. Mickiewicza 30, 30-059, Krakow, Poland, motyka@agh.edu.pl.
authors: Jacek
authors: J
authors: Motyka
authors: Adam
authors: A
authors: Postawa
mesh_terms: D002118:Calcium / Q000032:analysis; D004784:Environmental Monitoring; D060587:Groundwater / Q000737:chemistry*; D007854:Lead / Q000032:analysis; D008274:Magnesium / Q000032:analysis; D008906:Mining; D011044:Poland; D013431:Sulfates / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*; D015032:Zinc / Q000032:analysis
chemical_list: D013431:Sulfates; D014874:Water Pollutants, Chemical; D007854:Lead; D008274:Magnesium; D015032:Zinc; D002118:Calcium
references: Science. 1970 Feb 20;167(3921):1121-3
references: 17829406