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Prospective zone of thermal water occurrence in the area of the Orlica-Śnieżnik dome

Kiełczawa Barbara, Liber-Makowska Elżbieta

Mining Science

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2021

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Vol. 28

263--276

EN

The paper describes a prospective area of thermal water occurrence linked to the strike of a deep tectonic fracture within the Orlica-Śnieżnik dome. The indicated area contains CO2-rich waters, carbonated waters and thermal waters with mean temperatures oscillating from 10.3°C to 35.0°C. The TDS content in these waters oscillates from 0.8 to 11.5 g/L. The mean intake discharge varies from 1.67 m3/h to 36.3 m3/h. The conducted research demonstrated a correlation between discharge variation, water temperature and the HCO–3 ion content in Duszniki-Zdrój intakes. Based on an analysis of the physicochemical properties of the discussed waters, an attempt was made to estimate deposit temperatures by using chemical geothermometers. The obtained results were corrected by including the results of water saturation variability analysis in relation to rock medium. The probable temperatures of the analysed waters in particular deposits fall within the range of 71°C to 140°C.

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Medicinal CO2-rich water deposits in the Polish part of the Sudetes

Liber-Makowska Elzbieta, Kielczawa Barbara

Mining Science

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2021

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Vol. 28

247--261

EN

The article presents characteristics of medicinal CO2-rich water deposits occurring in different hydrogeological units of the Sudetes. The conditions of deposit formation in different and lithologically diverse rock media lead to the occurrence of waters varying in TDS (0.03–6.7 g/L) and CO2 content (0.2–3.5 g/L) in a relatively small area of the Polish Sudetes. There are also CO2-rich water intakes with various total discharges in particular deposits: from 5216 m3/year in Czerniawa-Zdroj to 250871 m3/year in Duszniki-Zdroj. Particular attention has been paid to quantitative and qualitative parameters of Duszniki-Zdroj and Szczawno-Zdroj deposits. In Szczawno-Zdroj, the exploited intakes are springs with discharges in the range of 0.006–0.225 m3/h, and in Duszniki-Zdroj – boreholes with discharges ranging from 4.2 to 18.0 m3/h. The article presents the results of a statistical analysis of CO2 content and intake discharge. Hydrogeochemical analyses have been performed with the use of AquaChem 2014.2 software.

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Coniacian sandstones from the North Sudetic Synclinorium revisited: palaeoenvironmental and palaeogeographical reconstructions based on trace fossil analysis and associated body fossils

Chrząstek A., Wypych M.

Geologos

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2018

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Vol. 24, No. 1

29--53

EN

The Coniacian quartz sandstones (Żerkowice Member, Rakowice Wielkie Formation) that crop out at quarries near Czaple-Nowa Wieś Grodziska (North Sudetic Synclinorium) contain a low-diversity assemblage of trace fossils: Gyrochorte isp., Ophiomorpha nodosa Lundgren, 1891, Ophiomorpha isp., Phycodes cf. curvipalmatum (Pollard, 1981), ?Phycodes isp., Planolites cf. beverleyensis (Billings, 1862), Thalassinoides paradoxicus Woodward, 1830 and ?Thalassinoides isp. Moreover, interesting compound burrow systems, here referred to as Thalassinoides-Phycodes cf. palmatus and ?Thalassinoides-Phycodes, were recognised at the Czaple Quarry. Additionally, ?Gyrochorte isp., Phycodes cf. flabellum (Miller and Dyer, 1878) and ?Treptichnus isp. were encountered at correlative levels in the Rakowice Małe Quarry. Some of these ichnotaxa have not been recorded previously from Coniacian sandstones of the Żerkowice Member. Additionally, in slabs of these sandstones, the gastropod Nerinea bicincta Bronn, 1836 and the bivalve Lima haidingeri Zittel, 1866 were found. These interesting finds, in particular the gastropods, were already noted from the study area in the first half of the twentieth century by Scupin (1912–1913). Ethologically, the trace fossil assemblage is represented by domichnia or domichnia/fodinichnia (Ophiomorpha, Thalassinoides), fodinichnia (Phycodes) and pascichnia (Gyrochorte, Planolites). The compound burrow systems (Thalassinoides-Phycodes) are interpreted as dwelling/feeding structures. The possible tracemakers are crustaceans (Ophiomorpha, Thalassinoides) or worm-like animals (annelids and other) (Planolites, ?Phycodes, Gyrochorte and ?Treptichnus). The assemblage of trace fossils is characteristic of the Skolithos ichnofacies and Cruziana ichnofacies, typical of shallow-marine settings. Ichnological studies, as well as the presence of accompanying fossils (bivalves, gastropods), confirm the palaeoenvironmental reconstruction of the Żerkowice Member sandstones by Leszczyński (2010). That author interpreted the Coniacian sandstones as bar and storm deposits laid down in a shallow epicontinental sea (mainly the foreshore-upper shoreface; up to the middle shoreface) under normal oxygenation and salinity, in soft substrate, above fair-weather wave base. The deposition of the Żerkowice Member sandstones is linked to a regression that started after uplift of the southeastern part of the North Sudetic Synclinorium.