Wody lecznicze Połczyna Zdroju
Abstract
Therapeutical waters in Połczyn Zdrój.
S u m m a r y. Mineral water of the chemical type Cl–Na, Br, I, B are exploited by water intake Połczyn IG–1 in the Połczyn Zdrój. The intake is screened in the Upper Triassic(Keuper) strata. The water is mineralised at 75 g/dm3. In 2001, a new borehole Połczyn 2 was also drilled. It screened in the uppermost Triassic (Rhaetian) sandstones and took waters of mineralization of 0.74 g/dm3. At present the Połczyn 2 well is not exploited. The isotopic and chemical composition of water from these intakes were examined. Water “age” in the Połczyn 2 intake is estimated at 5500 years. Therefore, it is a relatively “young” water,infiltrated during the Middle Holocene. However, the borehole Połczyn IG–1 yields “old” water of pre-Quaternary infiltration. This water can contain admixture of the other waters, e.g., probably relict marine waters. In the Połczyn Spa area deep circulation waters reach layers of low permeability, at 600–800 m deep. Within the Triassic strata there is a dramatic difference of waters total mineralisation (TDS). Water in the Rhaetian formations have mineralistion of 0.74 g/dm3, while in the Keuper strata the TDS reaches 75 g/dm3. Claystones strata, more than 300 m thick, occur between the Keuper and the Rhaetian layers. The claystone beds are a good aquiclude stratum and block cross-formational flow from underlying layers.
S u m m a r y. Mineral water of the chemical type Cl–Na, Br, I, B are exploited by water intake Połczyn IG–1 in the Połczyn Zdrój. The intake is screened in the Upper Triassic(Keuper) strata. The water is mineralised at 75 g/dm3. In 2001, a new borehole Połczyn 2 was also drilled. It screened in the uppermost Triassic (Rhaetian) sandstones and took waters of mineralization of 0.74 g/dm3. At present the Połczyn 2 well is not exploited. The isotopic and chemical composition of water from these intakes were examined. Water “age” in the Połczyn 2 intake is estimated at 5500 years. Therefore, it is a relatively “young” water,infiltrated during the Middle Holocene. However, the borehole Połczyn IG–1 yields “old” water of pre-Quaternary infiltration. This water can contain admixture of the other waters, e.g., probably relict marine waters. In the Połczyn Spa area deep circulation waters reach layers of low permeability, at 600–800 m deep. Within the Triassic strata there is a dramatic difference of waters total mineralisation (TDS). Water in the Rhaetian formations have mineralistion of 0.74 g/dm3, while in the Keuper strata the TDS reaches 75 g/dm3. Claystones strata, more than 300 m thick, occur between the Keuper and the Rhaetian layers. The claystone beds are a good aquiclude stratum and block cross-formational flow from underlying layers.