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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 eastern part of the Pomorzany Mine
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Fig5: Chemical composition of water in eastern part of the Pomorzany Mine

Mentions: In the western part of the Pomorzany mine, changes of the chemical composition of inflows from the Permian conglomerates are caused not only by a buffering of acid solutions in the environment of carbonate rocks, but also by polluted waters from carbonate Triassic rocks from the south. Pollution is caused by the migration of leakage from tailing ponds located near the Bolesław Mine. During the development stage of the Pomorzany Mine, only five inflows in this part of the mine were registered. Those were freshwaters with TDS from 0.38 to 0.59 g/L. Calcium concentration ranged from 24 to 58 mg/L, magnesium from 20 to 34 mg/L, sodium from 7 to 83 mg/L and potassium from 5 to 6 mg/L. As for the anions, chloride concentration ranged from 16 to 90 mg/L, sulphates from 40 to 128 mg/L and bicarbonate from 232 to 250 mg/L. At those times, waters from the inflows belonged to the general type HCO3–Ca–Mg and in one case HCO3–SO4–Ca–Mg (Fig. 5).Fig. 5


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 eastern part of the Pomorzany Mine
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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

Fig5: Chemical composition of water in eastern part of the Pomorzany Mine
Mentions: In the western part of the Pomorzany mine, changes of the chemical composition of inflows from the Permian conglomerates are caused not only by a buffering of acid solutions in the environment of carbonate rocks, but also by polluted waters from carbonate Triassic rocks from the south. Pollution is caused by the migration of leakage from tailing ponds located near the Bolesław Mine. During the development stage of the Pomorzany Mine, only five inflows in this part of the mine were registered. Those were freshwaters with TDS from 0.38 to 0.59 g/L. Calcium concentration ranged from 24 to 58 mg/L, magnesium from 20 to 34 mg/L, sodium from 7 to 83 mg/L and potassium from 5 to 6 mg/L. As for the anions, chloride concentration ranged from 16 to 90 mg/L, sulphates from 40 to 128 mg/L and bicarbonate from 232 to 250 mg/L. At those times, waters from the inflows belonged to the general type HCO3–Ca–Mg and in one case HCO3–SO4–Ca–Mg (Fig. 5).Fig. 5

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