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Pokładowe wystąpienia soli potasowo-magnezowych w południowo-zachodniej Polsce – potencjał złożowy

Hodbod Marta, Czapowski Grzegorz, Skowroński Leszek, Sobień Katarzyna

Przegląd Geologiczny

2023

Vol. 71, nr 6

321--331

New borehole data (from boreholes drilled after 2014) and reinterpretation of historical well logs enabled to update the acreage and reserve potential of Upper Permian (Zechstein) stratiform potash-bearing deposits in SW Poland (Fore-Sudetic area). These deposits, referred to as the Older Potash (K2) and the Younger Potash (K3), are included in the Stassfurt (Z2) and Leine (Z3) cyclothems. Within the present-day extent of both units, several prospective areas with the maximum depth to the potash seam of 2 km and its thickness over 2 m have been contoured. Foreach such area, predicted reserves of potash rock have been calculated (using such parameters as the area, average potash seam thickness, and specific weight of potash rock assumed at 2.1 Mg/m3). 7prospective areas (defined by 98 wells) of the Older Potash (K2) deposits have the reserves estimated at 3. 2 bln Mg and a total surface area of 454 km2. 6 areas (contoured by 23 wells) of the Younger Potash (K3) deposits characterize rocks of predicted reserves of 288.8mln Mg and a total surface area over 60 km2. Therefore, the area of SW Poland offers a relatively high resource potential for potash salts and a more detailed geological insight (and possible future exploitation) of 13 prospective areas with total predicted reserves of 3.53 bln Mg and a total surface area of up to 514 km2. Preliminary calculation of possible amounts of K2O in these reserves (assuming a low average K2O content at 1%) suggests 35.32mln Mg of potassium oxide. Because the potash-bearing seams in the study area are composed mainly of chloride K-Mg minerals such as sylvine (KCl) and carnallite (KClMg · Cl2 · 6H2O) easily dissolved in water, these seams are favourable for relatively cheap exploitation by underground leaching.

Poszukiwanie i rozpoznawanie złóż ropy naftowej i gazu ziemnego w Polsce : szósta runda przetargowa

Wójcik Krystian, Zacharski Jarosław, Łojek Marcin, Wróblewska Sara, Kiersnowski Hubert, Waśkiewicz Krzysztof, Wójcicki Adam, Laskowicz Rafał, Sobień Katarzyna, Peryt Tadeusz, Chylińska-Macios Agnieszka, Sienkiewicz Jagoda

Przegląd Geologiczny

2022

Vol. 70, nr 5

363--372

On June 30, 2021 the Polish Minister of Climate and Environment announced the boundaries of five areas dedicated for the next, 6th tender round for hydrocarbon concessions in Poland, planned for the second half of 2022. These are: Block 413-414, Block 208, Cybinka-Torzym, Zielona Góra West, and Koto tender areas. The main exploration target of these areas is related to conventional and unconventional accumulations of gas and oil in the Carpathian basement, Carpathian Foredeep and Outer Carpathians (Block 413-414), as well as in the Carboniferous, Permian Rotliegend, Zechstein Limestone, and Main Dolomite (Block 208, Cybinka-Torzym, Zielona Góra West) and in the Mesozoic of the Polish Lowlands (Koto). The other way of granting hydrocarbon concessions in Poland is the open door procedure, in which an entity may apply for concessions for any other area.

Integrated palynostratigraphy and magnetostratigraphy of the Middle and Upper Buntsandstein in NE Poland : an approach to correlating Lower Triassic regional isochronous horizons

Becker Anna, Fijałkowska-Mader Anna, Nawrocki Jerzy, Sobień Katarzyna

Geological Quarterly

2020

Vol. 64, No. 2

460--479

Despite years of research, Lower Triassic deposits of the epicontinental Central European Basin still lack a detailed stratigraphy that would allow regional correlation of isochronous horizons. The best chronostratigraphic results have up to now been achieved by microspore-based biostratigraphy and magnetostratigraphy. Integrated palynostratigraphic and magnetostratigraphic investigations, carried out on Buntsandstein cores from northeastern Poland representing the eastern margin of the basin, have made precise correlations with the better-explored basin centre. The Lidzbark and Malbork formations of the Bartoszyce IG 1 borehole were examined by means of palynology and palaeomagnetic studies. Further palaeomagnetic studies were applied to the Lidzbark, Malbork and Elbląg formations of the Nidzica IG 1 borehole and the Elbląg Fm. of the Pasłęk IG 1. Two spore-poll en assemblages were distinguished representing the Densoisporites nejburgii Subzone of the D. nejburgii Zone within the lower part of the Lidzbark Fm. and the lowermost part of the Malbork Fm. Mostly reversed polarity was detected within the lower part of the succession investigated, whereas normal polarity prevailed within its upper part. A normal polarity local zone was correlated with the undivided Tbn6-Tbn7 standard magnetozones of western Poland. The reversely polarized part of the succession corresponds most probably to the Tbr5 standard magnetozone. The base of the Tbn6-Tbn7 magnetozone can serve as a good correlation horizon for regional reconstructions.