Starzec, Krzysztof
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inżynieria środowiska, górnictwo i energetyka
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Item type:Article, Access status: Open Access , Rocky Sandstone Landforms in Istebna, Silesian Beskid (Outer Carpathians, Poland)(Wydawnictwa AGH, 2018) Starzec, Krzysztof; Waśkowska, Anna; Golonka, Jan; Gawęda, Aleksandra; Szopa, KrzysztofThe rocky sandstone landforms, which are interesting geotouristic objects, occur in the eastern part of Istebna village. The series of rock walls and pulpits is located on the southern slopes of the Karolówka Range. Fragments of the upper sandstones of Istebna Formation (Upper Cretaceous–Paleocene) crop out within these rocks. They represent the period of intensive supply of the clastic material into the Outer Carpathian Silesian Basin leading to the origin of thick-bedded, very coarse-grained sandstones and conglomerates. The occurrence of large, numerous crystalline rocks is a particular and unique feature of these outcrops. These magmatic and metamorphic rocks were derived from the basement of the Carpathian basins. This paper describes the detailed characteristics of these rocky landform objects.Item type:Article, Access status: Open Access , Structure recognition and fluid flow potential based on well data and geological field investigations. A case study of the Istebna Beds, Silesian Unit, Carpathians(Wydawnictwa AGH, 2024) Krakowska-Madejska, Paulina I.; Puskarczyk, Edyta; Starzec, Krzysztof; Jarzyna, Jadwiga A.; Stadtmüller, Marek
Wydział Geologii, Geofizyki i Ochrony ŚrodowiskaFacies were recognized based on the results of well logging data, using these measurements and conducting a comprehensive interpretation. This was done by first using shaliness (volume of shale) as the main parameter for a geological profile division into petrophysical lithofacies before secondly calculating Flow Zone Index (FZI), utilizing porosity and permeability estimated from well logging interpretation and defining Rock Types on the basis of FZI frequency distributions. FZIs were also determined according to porosity and permeability from laboratory measurements whenever the results were available. Descriptions of cores and cuttings together with the results of geological field investigations were the basis for lithofacies determination. Maps of average porosity, permeability, and FZI values were constructed for the study area. Three types of facies data and maps of reservoir parameters were used to support the recognition of geological structures and their assessment of potential for fluid movement in the rock formation. The facies analyses were performed on the example of the Istebna Beds of the Silesian Unit in the Carpathians.Item type:Article, Access status: Open Access , Permian versus Jurassic geotectonic position of the Lhasa block - facts and controversies(Wydawnictwa AGH, 2023) Krobicki, Michał; Golonka, Jan; Starzec, Krzysztof; Iwańczuk, JoannaItem type:Article, Access status: Open Access , Sedimentary response to tectonic uplift of the Dukla basin margin recorded at Skrzydlna - the Menilite Beds (Oligocene), Outer Carpathians, S Poland(Wydawnictwa AGH, 2018) Siemińska, Aneta; Starzec, Krzysztof; Godlewski, Paweł; Wendorff, MarekThe Menilite Beds (Oligocene of Polish Flysch Carpathians) at Skrzydlna crops out in a structurally complex zone of the Fore-Magura Unit, which is tectonically overridden by Magura Nappe thrust form the S. The exposed sedimentary suite, representing the Dukla Basin, consists of fine-grained, well organised strata deposited in a low-energy, deep marine basin, which are abruptly overlain by poorly organised, coarse sandy conglomerate that forms a Mass Transport Deposit (MTD) complex. The MTD contains large boulders of extrabasinal rocks, massive sandstone beds with intrabasinal mudstone clasts, and slump sheets of sandstones. Above rests a fining- upwards sequence of sandstone beds interlayered with mudstones. The fine-grained facies reappear above to terminate the exposed succession. Erosional contacts and rapid facies changes, both vertical and lateral, are characteristic for the MTD unit. The sandstone-mudstone unit above contains laterally migrating erosional channels filled with massive sandy conglomerate in the lower part. Turbidites of varying density and completeness of internal structures that occur above are accompanied by an association of mixed facies including large-scale dune cross-bedding. Mineralogically, the sandstones are quartz arenites, sub-lithic arenites and wackes. Calcarenite grains – bioclasts, micrite and marl occur in substantial proportions only in the uppermost part of the succession. The point-counting data plotted on Qm-F-Lt diagram are clustered within the recycled fields: quartzose and transitional. Mineralogical maturity of the sandstones has the tendency to decrease from the sub-MTD strata upwards via the MTD unit to the lower part of the sandstone-mudstone complex, then it increases to the youngest sandstone beds with carbonate grains. These tendencies, associated with sedimentary features of the succession, reflect rapid uplift, emergence and progressive erosion of the terrigenous detritus source area, followed by tectonic stabilisation reflected by the appearance of the »carbonate factory«.