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    Wyświetlanie 1-4 z 4
    Tytuł:
    Oil- and gas-bearing sediments of the Main Dolomite (Ca2) in the Międzychód region: a depositional model and the problem of the boundary between the second and third depositional sequences in the Polish Zechstein Basin
    Autorzy:
    Jaworowski, K.
    Mikołajewski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2066024.pdf
    Data publikacji:
    2007
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Polskie Zagłębie Cechsztyn
    stratygrafia
    dolomit główny
    Polish Zechstein Basin
    Main Dolomite
    depositional model
    sequence stratigraphy
    Opis:
    The Polish Zechstein Basin was a tideless sea dominated by storms. Main Dolomite deposits of the Miedzychód region were deposited: a) on the carbonate platform (in the environments of the outer barrier, inner barrier and high- and low-energy platform flat); b) on the platform slope; c) at the toe-of-slope; d) on the basin floor. The best reservoir properties are recorded in shallow-marine deposits of the outer and inner barriers and in deep-sea sediments of the toe-of-slope (turbidites and debrites). Rich reserves of crude oil and natural gas were discovered both on the carbonate platform (the Miedzychód and Grotów deposits) and at its toe-of-slope (the Lubiatów deposit). The Main Dolomite sediments are wholly included in the second depositional sequence (PZS2 sensu Wagner & Peryt, 1997). The maximum flooding surface of the PZS2 sequence within the platform, its slope and toe-of-slope, runs along the A1g/Ca2 boundary. In the basinal zone, its correlative equivalent is a hard ground observed within the Main Dolomite carbonate rhythmites. The boundary between the second and third (PZS2/PZS3) depositional sequences (corresponding to the ZS3/ZS4 sequence boundary in the German Basin) runs on top of the Main Dolomite carbonates (on the platform slope, at the toe-of-slope and on the basin floor) and above top of the Main Dolomite carbonates, within the lower part of the Basal Anhydrite (on the platform).
    Źródło:
    Przegląd Geologiczny; 2007, 55, 12/1; 1017-1024
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena głębokości zbiornika solnego i czasu depozycji chlorków sodu na przykładzie utworów najstarszej soli kamiennej (Na1) cyklu PZ1 cechsztynu w rejonie Zatoki Puckiej
    Calculations of salt basin depth and deposition time of salts, exemplified by the Oldest Halite (Na1) unit from the Zechstein PZ1 cycle at the Puck Bay (northern Poland)
    Autorzy:
    Czapowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074526.pdf
    Data publikacji:
    2007
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    głębokość zbiornika ewaporytowego
    czas depozycji ewaporytów
    cechsztyn
    Polska
    evaporite basin depth
    deposition time of evaporites
    Zechstein
    Polska
    Opis:
    Defining of the depth of a past evaporite basin is a very disputable problem due to lack of recent environmental equivalents of fossil evaporite giants. A simple geometric method of calculation of the initial depth of chloride basin - applied for low tectonized stratiform successions - was proposed based on facies analysis of both chloride (halite) and sulphate (anhydrite) deposits, being the major products of each evaporite cycle. Estimated depths of several minor basins, composing the marginal part of the large Zechstein (Upper Permian) salt basin of the Oldest Halite (Na1) in northern Poland (at Puck Bay) varied from 110-112 m in the southern (Lisewo) and north-eastern (Jastrzebia Góra) basins to 60 m for the landward, western (Debki) one. Deposition time for both sulphate and halite deposits of the Oldest Halite (Na1) unit from the study area was calculated using their estimated deposition rates and counting of "annual cycles" reflected by rhythmic sulphate intercalations in halites (the concept of Richter- Bernburg, 1957, 1959). Estimated values of deposition time - with the annual rhythms - for the most complete successions of deep-water salts were variable for any of the evaporate basins under study and they varied from the minimum of 933 years (Debki basin) to the maximum of 2771 years (Lisewo basin). This last value is comparable to the time value (2266 years) calculated for the thickest deep-water salt profile (Bia3ogarda IG 1 well) at the minimum deposition rate, so the deposition of the preserved Oldest Halite complex could probably last > 2700 years. Analogous calculations of deposition time for main evaporite (sulphate and salt) units of the Polish Zechstein basinal succession (PZ1, PZ2 and PZ3 cycles) evidenced that these deposits, constituting ca. 72% of the whole Zechstein profile, presumably required from 0.28-0.39% (at maximum precipitation rate) to 2.5-3.6% (at minimum precipitation rate) of the estimated Zechstein duration. Consequently, the most (> 96%) of Zechstein time was probably dedicated to accumulation of 1/3 of the Zechstein sequence (dominantly clastics) and periods of erosion and/or non-deposition.
    Źródło:
    Przegląd Geologiczny; 2007, 55, 7; 573-581
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza mikrofacjalna dolomitu głównego (Ca2) we wschodniej części wielkopolskiej platformy węglanowej
    Microfacies analysis of the Main Dolomite (Ca2) in the eastern part of the Wielkopolska Carbonate Platform (W Poland)
    Autorzy:
    Krzyżak, Ewelina
    Powiązania:
    https://bibliotekanauki.pl/articles/2075967.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    basen permski
    główny dolomit cechsztyński
    Ca2
    platforma węglanowa
    analiza mikrofrakcji
    Permian Basin
    Zechstein Main Dolomite
    carbonate platform
    microfacies analysis
    Opis:
    Investigation of the Permian Basin in the western part of the Polish Lowland was initiated in 1961 when the Rybaki field was discovered - the first one outside the Carpathians in Poland. The Main Dolomite (Ca2) in the eastern part of the Wielkopolska Platform, located in western Poland, is characterized by a significant variety of microfacies, hence this research is aimed at better interpretation and understanding of depositional environments of current reservoir rocks as well as possibility of identification of facies distribution within the investigated carbonate platform. A detailed microfacies analysis of the Main Dolomite was conducted, which was supported by core logging. The author interpreted depositional environments and generated a 3D model of the top of the Main Dolomite using seismic reflection data. An attempt to correlate microfacies between the analyzed wells was also performed. Integrated analyses of thin sections and drill cores from 4 wells allowed me to interpret the depositional environments of the Main Dolomite. The generated 3D model of the top of the Main Dolomite provided a better insight into subsurface tectonics, paleogeography of the analyzed area and a better understanding of depositional lithofacies environments.
    Źródło:
    Przegląd Geologiczny; 2019, 67; 172--175
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pstry piaskowiec w Górach Świętokrzyskich: chronostratygrafia i korelacja litostratygraficzna z basenem turyńskim
    Buntsandstein in the Holy Cross Mountains: chronostratigraphy and lithostratigraphical correlation with the Thuringian Basin
    Autorzy:
    Ptaszyński, T.
    Niedźwiedzki, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074457.pdf
    Data publikacji:
    2006
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    cechsztyn
    pstry piaskowiec
    chronostratygrafia
    litostratygrafia
    korelacja litostratygraficzna
    basen turyński
    Buntsandstein
    Zechstein
    chronostratigraphy
    lithostratigraphy
    Holy Cross Mountains
    Thuringian Basin
    correlation
    Conchostraca
    Opis:
    The study was performed to attempt the lithostratigraphic correlation of the Buntsandstein in the margin of Holy Cross Mountains region with that of the Thuringian Basin, and simultaneously, to clarify its position in the chronostratigraphic scheme, basing on biostratigraphic data (microflora, conchostracans), and on the existence of regional discordances. The authors found strong analogies with other Buntsandstein sections of the Europe. On the other hand, because of the position of the studied area within the marginal part of the Central European Basin, Buntsandstein of the Holy Cross Mountains region is developed in different facies, more fluvial, instead of lacustrine ones. The common presence of Conchostraca representing the same species as in other parts of the Central European Basin (Thuringia), enables possible the correlation of the investigated area with the Thuringian Basin, and helps to locate stratigraphic gaps and discordances. The authors found that the lower boundary of the Buntsandstein and the boundary between the Lower and Middle Buntsandstein in the Polish study area are not equivalents of those in other areas. Also note worthy is the presence at the margin of the Holy Cross Mountains of youngest Permian terrigenous deposits not connected with the Zechstein salinar sedimentation, included to date to Zechstein or to Buntsandstein. The key for understanding the lithostratigraphic scheme of the Buntsandstein of Holy Cross Mountains region is an assumption, that the Zagnańsk Formation is mostly of fluvial, instead of lacustrine origin, consisting of equivalents of the whole Lower Buntsandstein, and that of the lower Volpriehausen Formation of the Middle Buntsandstein, with the Volpriehausen discordance present within. Authors also assume, that at least in this case, differences in the marginal part of the sedimentary basin, in comparison with its central part, depend on the presence of fluvial facies instead of lacustrine ones, and onthe presence of sedimentary gaps and discordances whose duration is progressively longer towards the basin margin enlarges in the direction to the basin margin.
    Źródło:
    Przegląd Geologiczny; 2006, 54, 6; 525-533
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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