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Impact of Zn-Pb mining in the Olkusz ore district on the Permian aquifer (SW Poland).

Motyka J, Postawa A - Environ Sci Pollut Res Int (2013)

Bottom Line: 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.Short-term effect was freshening in the zones of contact with overlying the Triassic limestones and dolomites.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.

View Article: PubMed Central - PubMed

Affiliation: AGH University, Al. Mickiewicza 30, 30-059, Krakow, Poland, motyka@agh.edu.pl.

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.

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Chemical composition of water in western part of the Pomorzany Mine
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Fig6: Chemical composition of water in western part of the Pomorzany Mine

Mentions: Water samples collected from inflows in this part of the Pomorzany Mine in years 1996–2010 presented completely different chemical composition. TDS ranged from 1.47 to 5.14 g/L. Among cations, calcium and magnesium noticeably dominated with concentrations ranging from 220 to 550 mg/L and from 98 to 460 mg/L, respectively. An increase in sodium concentration was also observed (12 to 150 mg/L). Only potassium concentration was practically unchanged, ranging from 3 to 9 mg/L. With significant changes in relations between major ion concentrations, chemical types of discussed waters changed to Ca–Mg–SO4–HCO3 or SO4–Ca–Mg and SO4–Mg–Ca (Fig. 6).Fig. 6


Impact of Zn-Pb mining in the Olkusz ore district on the Permian aquifer (SW Poland).

Motyka J, Postawa A - Environ Sci Pollut Res Int (2013)

Chemical composition of water in western part of the Pomorzany Mine
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3824222&req=5

Fig6: Chemical composition of water in western part of the Pomorzany Mine
Mentions: Water samples collected from inflows in this part of the Pomorzany Mine in years 1996–2010 presented completely different chemical composition. TDS ranged from 1.47 to 5.14 g/L. Among cations, calcium and magnesium noticeably dominated with concentrations ranging from 220 to 550 mg/L and from 98 to 460 mg/L, respectively. An increase in sodium concentration was also observed (12 to 150 mg/L). Only potassium concentration was practically unchanged, ranging from 3 to 9 mg/L. With significant changes in relations between major ion concentrations, chemical types of discussed waters changed to Ca–Mg–SO4–HCO3 or SO4–Ca–Mg and SO4–Mg–Ca (Fig. 6).Fig. 6

Bottom Line: 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.Short-term effect was freshening in the zones of contact with overlying the Triassic limestones and dolomites.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.

View Article: PubMed Central - PubMed

Affiliation: AGH University, Al. Mickiewicza 30, 30-059, Krakow, Poland, motyka@agh.edu.pl.

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.

Show MeSH