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Geological setting and Ediacaran–Palaeozoic evolution of the western slope of the East European Craton and adjacent regions

Poprawa Paweł

Annales Societatis Geologorum Poloniae

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2019

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Vol. 89, No. 4

347--380

EN

A set of geological maps and geological cross-sections was prepared to document the geological setting of sedimentary basins developed on the western slope of the EEC and adjacent areas to the west. On the basis of these data and literature on the subject, the evolution of the sedimentary basins in the study area was reviewed, with special emphasis on the Ediacaran–Lower Palaeozoic basin. The basin originated during late Ediacaran rifting, related to the latest stages of breakup of the Precambrian super-continent Rodinia/Pannotia, associated with large-scale igneous activity. The rifting ultimately led to the formation of the Tornquist Ocean and subsequently, during the latest Ediacaran to Middle Ordovician, the SW margin of the newly formed Baltica became a passive continental margin. The upper Cambrian depocentre in the Biłgoraj-Narol Zone and the Łysogóry Block tentatively is interpreted as a small, narrow foredeep, related to the docking of the Małopolska Block to the western margin of Baltica. From the Late Ordovician through the Silurian, a gradual change to a collisional tectonic setting is observed across the entire SW margin of Baltica, as well as in the zones adjacent to it from the west, which together became the site of development of the extensive Caledonian foredeep basin, related to the convergence and collision of Avalonia and Baltica. The oblique character of the collision resulted in a prominent diachronism in the development of the foredeep basin. This refers to the initiation of basin subsidence, the starved basin phase, the main phase of rapid subsidence and supply of detritus from the west, and the termination of basin development. The Early Mississippian (Bretonian) phase of uplift and erosion and, to a lesser degree, also the Late Pennsylvanian one significantly affected the structure of the western EEC. During the Mississippian, extensive magmatic activity took place at the SW margin of East European Craton, in the region referred to here as the Baltic-Lublin Igneous Province.

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Interpretacja budowy geologicznej złoża ropy naftowej Łodyna na podstawie danych magnetotellurycznych oraz powierzchniowych danych geologicznych

Krzysztofik M.

Wiadomości Naftowe i Gazownicze

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2015

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R. 18, Nr 7 (207)

8--13

PL

Złoże ropy naftowej Łodyna położone jest w bardzo skomplikowanych warunkach tektonicznych wynikających z istnienia wieloetapowych procesów geologicznych jakie miały wpływ na obecny układ strukturalny omawianego obszaru. W oparciu o dostępne powierzchniowe dane geologiczne oraz zinterpretowane przekroje opornościowe wykonane na podstawie prac magnetotellurycznych opracowano modele budowy geologicznej otoczenia złoża Łodyna. Skomplikowana budowa geologiczna omawianego obszaru, ograniczona ilość danych geofizycznych z otworów wiertniczych (w tym głównie danych elektrometrycznych) były elementami znacznie utrudniającymi szczegółową interpretację układu strukturalnego obszaru złoża Łodyna, dlatego prezentowane w pracy przekroje geologiczne są jedynie pewnym uproszczeniem budowy tego rejonu.

EN

Łodyna oil field is located in a very complex tectonic conditions resulting from the existence of multi-stage geological processes that have an impact on the current structural layout of the talked area. Accumulations of hydrocarbon occur in the five Oligocene sandstone horizons among the menilites beds. Based on the available geological surface data and interpreted resistive cross-sections wrought on the work of magnetotelluric, few geological models were developed. Complex geological structure of this area and the limited amount of geophysical data from borehole (mainly electrometric data) were significantly hindering elements which clearly hampered to elaborate detailed interpretation of the structural system of Łodyna vicinity, which is why the work presented in the geological cross-sections are merely a simplification of the real geological settings.

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Mapy izolinii temperatury pierwotnej skał Północnego Okręgu Węglowego Lubelskiego Zagłębia Węglowego

Cygankiewicz J., Knechtel J.

Wiadomości Górnicze

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2015

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R. 66, nr 5

247--256

PL

Do sporządzenia map izolinii temperatury pierwotnej skał Północnego Okręgu Węglowego Lubelskiego Zagłębia Węglowego skorzystano z pomiarów w otworach wierconych z powierzchni oraz z przekrojów geologicznych. Na podstawie analizy przekrojów geologicznych wyznaczono grubości warstw stratygraficznych zalegających nad miejscami pomiaru temperatury pierwotnej skał. Korzystając z metod statystycznych, wyznaczono wartości współczynników charakteryzujących przepływ ciepła w skałach Północnego Okręgu Węglowego LZW. Z kolei wyznaczono grubości warstw stratygraficznych miejsc, dla których należy wyznaczyć temperaturę pierwotną skał. Następnie obliczono tę temperaturę w wybranych punktach poziomów i przy pomocy specjalistycznego programu SURFER 8 wykreślono mapy izolinii tej temperatury dla wspomnianych poziomów.

EN

In order to draw up maps of virgin temperature isolines of rocks in the Northern Coal District of Lublin Coal Basin an advantage was taken of the measurements in the boreholes drilled from the surface and from geological cross-sections. Based on the analysis of geological cross-sections the thickness of stratigraphic bedded was determined above the virgin temperature measurement points of rocks. Using statistical methods, values of coefficients characterizing the heat flow in the rocks of the Northern Coal District of Lublin Coal Basin were determined. Then the thickness of stratigraphic layers was determined at places for which the virgin temperature of rocks should be determined. Then calculations were done of the temperature at selected levels and with the help of a special SURFER 8 software followed by plotting of isolines maps of the said temperature for the aforementioned levels.

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Anatomy of contaminated aquifers of an industrial site : insights from the stable isotope compositions of waters and dissolved inorganic carbon

Vennemann T. W., Angloher-Reichelt S.

Geological Quarterly

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2005

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Vol. 49, No. 2

113-126

EN

The hydrogen and oxygen isotopes of water and the carbon isotope composition of dissolved inorganic carbon (DIC) from different aquifers at an industrial site, highly contaminated by organic pollutants representing residues of the former gas production, have been used as natural tracers to characterize the hydrologic system. On the basis of their stable isotope compositions as well as the seasonal variations, different groups of waters (precipitation, surface waters, groundwaters and mineral waters) as well as seasonably variable processes of mixing between these waters can clearly be distinguished. In addition, reservoir effects and infiltration rates can be estimated. In the northern part of the site an influence of uprising mineral waters within the Quaternary aquifers, presumably along a fault zone, can be recognized. Marginal infiltration from the Neckar River in the east and surface water infiltration adjacent to a steep hill on the western edge of the site with an infiltration rate of about one month can also be resolved through the seasonal variation. Quaternary aquifers closer to the centre of the site show no seasonal variations, except for one bore hole close to a for mermill channel and an other bore hole adjacent to a rain water channel. Distinct carbon isotope compositions and concentrations of DIC for these different groups of waters reflect variable influence of different components of the natural carbon cycle: dissolution of marine carbonates in the mineral waters, biogenic, soil-derived CO2 in ground- and surface waters, as well as additional influence of atmospheric CO2 for the surface waters. Many Quaternary aquifer waters have, how ever, distinctly lower δ13CDIC values and higher DIC concentrations compared to those expected for natural waters. Given the location of contaminated groundwaters at this site but also in the industrially well-developed valley out side of this site, the most likely source for the low δ13CDIC values is a biodegradation of anthropogenic organic substances, in particular the taroils at the site.