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Wyszukujesz frazę "Zechstein Basin" wg kryterium: Temat


Wyświetlanie 1-7 z 7
Tytuł:
The first microfossil record of ichthyofauna from the Naujoji Akmenė Formation (Lopingian), Karpėnai Quarry, northern Lithuania
Autorzy:
Dankina, D.
Chahud, A.
Radzevičius, S.
Spiridonov, A.
Powiązania:
https://bibliotekanauki.pl/articles/2060600.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
chondrichthyans
actinopterygians
Upper Permian
Zechstein Basin
northern Lithuania
Opis:
The assemblage of rare fish microremains of chondrichthyans and actinopterygians from Upper Permian deposits in Karpénai Quarry in northern Lithuania is described in detail for the first time. The deposits are characterized as reflecting a rapid phase of deposition of the Zechstein Limestone, interpreted as on a shallow shelf above storm-wave base in a proximal part of the Polish-Lithuanian Zechstein Basin. The actinopterygian microremains are represented by various teeth and a few scales from mostly palaeonisciforms and pycnodontiforms. The chondrichthyans are represented by various eusela- chian-type scales and a tooth of ?Helodus sp. The low abundance and low species diversity of the fossil assemblages studied may be due to arid palaeoenvironments that caused locally restricted conditions at this palaeogeographical location.
Źródło:
Geological Quarterly; 2017, 61, 3; 602--610
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Controls on basal Zechstein (Wuchiapingian) evaporite deposition in SW Poland
Autorzy:
Dyjaczyński, K.
Peryt, T. M.
Powiązania:
https://bibliotekanauki.pl/articles/2060060.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Zechstein Basin
evaporites
3D seismics
lithofacies
sedimentation
anhydritization
SW Poland
Opis:
The development of basal Zechstein (Wuchiapingian) strata inSW Polandindicates the existence of a diversified relief inherited after the flooding of the pre-existing depression by the transgressing Zechstein sea. The deeper parts of the basin were the place of development of thin basinal Zechstein Limestone showing sedimentary condensation manifested by bored and encrusted grains and thick evaporites (mostly halite), and in shallow parts Zechstein Limestone reefs followed by thinner evaporite sequences (dominated by anhydrite) occur. The analysis of 3D seismic sections showed that instead of three conventionally recognized evaporite units of stratigraphic potential in the PZ1 cycle, five units occur (from the base to the top: Lower Anhydrite, Lower Oldest Halite, Middle Anhydrite, Upper Oldest Halite, Upper Anhydrite). In a particular place their number may vary from two (Lower Anhydrite at the base of the PZ1 cycle and Upper Anhydrite at the top of the PZ1 cycle) to five. There are two complexes of Lower Anhydrite occurring throughout the platform and basinal zones showing deepening-upward (transgressive) trend. The halite sedimentation in the deepest parts of salt basins began shortly after the deposition of the upper Lower Anhydrite complex while in the sulphate platform areas the sulphate deposition lasted still for a long time. The Lower Oldest Halite deposits occur in the depressions. Between the halite basins, anhydrite platforms occur, and the thickness of anhydrite platform deposits is smaller than it is observed in salt basins. The Upper Oldest Halite in turn is recorded above the anhydrite platform. The two halite units represent different phases of development of halite basins. The Lower Oldest Halite basins are related to the pre-Zechstein depressions, although in some cases their syndepositional subsidence was controlled by reactivation, during the deposition of basal Zechstein strata, of former faults. In turn, the Upper Oldest Halite basins used the accommodation space created due to anhydritization of the Lower Anhydrite deposits composed originally of selenitic gypsum. The 3D seismics evidences that the PZ1 evaporites inSW Polandhave been deposited in far more complex and dynamic system than it was assumed before.
Źródło:
Geological Quarterly; 2014, 58, 3; 485--502
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
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:
Microfacies, foraminifers and carbon and oxygen isotopes in a basinal section of the Zechstein Limestone (Wuchiapingian): Bonikowo 2 borehole, western Poland
Autorzy:
Peryt, D.
Peryt, T. M.
Hałas, S.
Raczyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/2060535.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Foraminifers
carbon and oxygen isotopes
Wuchiapingian
basin facies
Zechstein Limestone
Polska
Opis:
The Zechstein Limestone of the Bonikowo 2 borehole is composed of limestone with varied dolomite content and is slightly thicker (3.4 m) than other supposed condensed sections in SW Poland. The microfacies (mostly bioclastic wackestones-packstones) are characteristic of open marine limestone deposited in deep shelf environments. The common occurrence of echinoids in all parts of the section, except close to its top, indicates no essential change in sea water salinity. However, the palaeotemperature interpretation of the highest δ18O value of calcite recorded in the Bonikowo 2 borehole (+0.32‰) indicates a temperature of 22.9°C when a δ18O of water = 2‰ is assumed. The δ13C and δ18O curves for calcite and dolomite are similar in shape, and their mean values are similar: +1.8 ±1.5‰ for calcite, respectively, and +1.9 ±2.3‰ and –4.3 ±2.4‰, –3.8 ±4.3‰ for dolomite. There is a recrystallized interval in the lower part of the section with both δ13C and δ18O values reduced. This may be regarded as an aerobic equivalent of the Kupferschiefer. The diversity and abundance of foraminifers is significant throughout the section studied; lagenids prevail, and this is considered to be due to the dysaerobic conditions throughout the duration of deposition of the Zechstein Limestone.
Źródło:
Geological Quarterly; 2016, 60, 4; 827--839
1641-7291
Pojawia się w:
Geological Quarterly
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 1-7 z 7

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