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Wyszukujesz frazę "Permian Basin" wg kryterium: Temat


Tytuł:
System naftowy karbon–czerwony spągowiec w niemiecko-holenderskiej części basenu – implikacje dla poszukiwań złóż gazu ziemnego w polskiej części basenu czerwonego spągowca
The Carboniferous-Rotliegend petroleum system in the German-Dutch part of the basin – implications for natural gas exploration in the Polish part of the Rotliegend basin
Autorzy:
Botor, D.
Powiązania:
https://bibliotekanauki.pl/articles/2062882.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
system naftowy
czerwony spągowiec
karbon
basen południowopermski
petroleum system
Rotliegend
Carboniferous
Southern Permian Basin
Opis:
System naftowy karbon–czerwony spągowiec w niemiecko-holenderskiej części basenu wykazuje szereg podobieństw i różnic w stosunku do polskiej części basenu. Głębokości występowania złóż gazu w niemiecko-holenderskiej części basenu są większe (1000–5300 m) niż w polskiej (1000–3700 m) i do 4000 m w strefach gazu zamkniętego (tight gas). Gazy wykazują duże zróżnicowanie składu chemicznego, jak i parametrów fizycznych. Średnia zawartość metanu w niemiecko-holenderskiej części basenu waha się w przedziale 30–95%, rosnąc szybko w kierunku zachodnim, natomiast w polskiej części basenu wynosi od około kilkunastu do około 90%, wykazując jednak duże zróżnicowanie w poszczególnych strefach. Gazy zakumulowane głównie w czerwonym spągowcu były wygenerowane przez skały macierzyste karbonu górnego (głównie pokłady westfalskich węgli kamiennych) w niemiecko-holenderskiej części basenu, a podrzędnie jedynie przez dolnokarbońskie skały. Basen niemiecko-holenderski był rozcięty przez liczne mezozoiczne uskoki, które przyczyniły się do powstania szeregu zrębów i rowów tektonicznych. Spowodowało to w efekcie zróżnicowanie głębokości pogrążenia i czasu występowania procesów generowania, migracji i akumulacji gazu, oraz zróżnicowanie szeregu pokarbońskich skał zbiornikowych i uszczelniających. Procesy generowania migracji i akumulacji gazów przebiegały wieloetapowo: od późnego karbonu aż do neogenu włącznie.
Carboniferous-Rotliegend Petroleum System in the German-Dutch part of the South Permian basin shows a number of similarities and differences in relation to the Polish part of the basin. Depth of occurrence of gas deposits in the German-Dutch part of the basin are larger (~1000–5300 m) than in Poland (~1000–3700 m) with the maximum of up to 4000 m in the tight gas zone. Gases show significant variation of chemical composition and physical parameters. The average methane content in the German-Dutch part of the basin ranges from 30 to 95% rising rapidly towards the west, whilst in the Polish part, the average methane content varies significantly in different areas of the basin (from several up to 90%). Gases that accumulated mainly in the Rotliegend, were generated predominantly by Westphalian source rocks (bituminous coals) in the German-Dutch part of the basin, and only subordinately by Lower Carboniferous source rocks. German-Dutch basin was dissected by numerous Mesozoic faults, associated with horsts, grabens, and platforms. It contributed to the differentiation of burial depth and timing of the generation processes, to the migration and accumulation of gas, and to the diversification of a number of post-Carboniferous reservoir rocks and seals. The processes of gas generation, migration and accumulation included several stages: from Late Carboniferous through Neogene.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2012, 448 (1); 159--167
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interpretacja zasięgu eksternidów waryscyjskich na eksperymentalnym profilu sejsmicznym GRUNDY 2003
Extent of the Variscan externides interpreted along the experimental seismic profile GRUNDY 2003.
Autorzy:
Śliwiński, Z.
Antonowicz, J.
Iwanowska, E.
Malinowski, M.
Grad, M.
Guterch, A.
Keller, G.R.
Takács, E.
Powiązania:
https://bibliotekanauki.pl/articles/2074417.pdf
Data publikacji:
2006
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
eksperyment sejsmiczny
sejsmika dynamitowa
interpretacja geologiczna
Variscan externides
Polish Permian Basin
wide-aperture seismic
integrated interpretation
Opis:
The question of the eastern extent of the Variscan externides in the Polish Lowlands is a subject of ongoing scientific debate. The key to resolve this problem is to provide a good seismic image of the pre-Permian strata. Unfortunately, the industrial seismic profiling brings sparse information from below the Zechstein, thus in 2003, a special seismic experiment called GRUNDY 2003 has been organised. The acquisition system was based on the deep seismic sounding equipment and was targeted at the recognition of Palaeozoic strata. The results in form of the 3D tomographic velocity field and the migrated depth section form the basis for the geological interpretation. Deduced geological model suggests the existence of two different geological media below the Permian strata. The likely interpretation is that it is the contact zone of the Variscan externides with their foreland. Obtained results are of a great importance for the hydrocarbons exploration perspectives.
Źródło:
Przegląd Geologiczny; 2006, 54, 1; 45-50
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrodynamiczne modelowanie basenów osadowych na przykładzie basenu permskiego monokliny przedsudeckiej
Hydrodynamic modelling of sedimentary basins on the example of the Permian basin in the Fore-Sudetic Monocline
Autorzy:
Zawisza, L.
Piesik-Buś, W.
Powiązania:
https://bibliotekanauki.pl/articles/299326.pdf
Data publikacji:
2005
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
basen permski
modelowanie hydrodynamiczne
baseny osadowe
monoklina przedsudecka
Permian Basin
Fore Sudetic Monocline
hydrodynamic modelling
sedimentary basins
Opis:
W pracy przedstawiono podstawy teoretyczne modelowania i hydrodynamicznej klasyfikacji naftowych basenów osadowych. Podstawą hydrodynamicznej klasyfikacji basenów naftowych są zjawiska różnicujące fazę płynną, a zwłaszcza zjawiska związane z ruchem płynów złożowych. Zdefiniowanie typu basenu hydrodynamicznego polega na określeniu, w jakim stadium rozwoju znajduje się on aktualnie: przed, w trakcie czy po inwazji wód filtracyjnych. Biorąc pod uwagę dane dotyczące rozkładu ciśnień złożowych, kierunków i prędkości przepływów wód podziemnych oraz właściwości płynów złożowych wydzielono trzy główne typy basenów naftowych: juwenilny (odśrodkowy), przejściowy (dośrodkowy) i dojrzały (statyczny). Zjawiska fizyczne oraz związki zachodzące pomiędzy nagromadzeniami węglowodorów a towarzyszącymi im wodami złożowymi i ciśnieniami predysponują typ pierwszy jako najbardziej perspektywiczny, a praktycznie eliminują jako nieperspektywiczny trzeci typ basenu. Podsumowując wyniki dotychczasowych rozważań hydrodynamicznych przeprowadzonych dla basenu permskiego monokliny przedsudeckiej, można stwierdzić, że basen ten jest basenem odśrodkowym (juwenilnym) i jest on bardzo perspektywiczny.
Theoretical fundamentals of modelling and hydrodynamic classification of sedimentary oil basins are presented in the paper. Hydrodynamic classification of oil basins is based on the effects differentiating the liquid phase, especially the movement of reservoir fluids. Definition of this type of hydrodynamic basin lies in determining its development stage at present: before, during or after the invasion of infiltration waters. Bearing in mind data of reservoir pressures distribution, directions and flow rates of groundwaters, as well as properties of reservoir fluids, three main types of sedimentary basins have been distinguished: juvenile (centrifugal), transient (centripetal) and mature (static). Physical phenomena and interrelations taking place between accumulated hydrocarbons and the accompanying reservoir waters and pressures predestine the first type as most perspective; the third type is usually eliminated as non-perspective. The so far final results of hydrodynamic analyses for the Permian basin in the Fore-Sudetic Monocline prompt the conclusion that the basin is a very perspective juvenile (centrifugal) basin.
Źródło:
Wiertnictwo, Nafta, Gaz; 2005, 22, 1; 469-478
1507-0042
Pojawia się w:
Wiertnictwo, Nafta, Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Permian Basin as a main exploration target in Poland
Autorzy:
Karnkowski, P. H.
Powiązania:
https://bibliotekanauki.pl/articles/2066015.pdf
Data publikacji:
2007
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
polskie zagłębie permiańskie
pola naftowe i gazowe
ropa naftowa
Polish Permian Basin
oil and gas fields
petroleum play
Opis:
The Polish Permian Basin (PPB) is a part of the Southern Permian Basin in theWestern and the Central Europe. Results of burial and thermal analyses as well as a configuration of the Moho surface of the Polish Basin suggest the asymmetrical basin model. History of the Polish Basin reveals that the Late Permian and the Early Triassic periods represent the main rifting phase and its later development resulted from thermal relaxation. During the Late Triassic and the Jurassic time some cooling of rift heat field took place, but the turning point in thermal evolution of the Polish Basin was at the Jurassic/Cretaceous boundary when the south-western part of the Polish Basin was uplifted and intensively eroded. The knowledge on the Permian Basin in Poland is chiefly connected with petroleum exploration. The gas fields are located mainly in the Rotliegend reservoirs. The Zechstein deposits, overlying the Rotliegend, are also in the area of economic interest: hydrocarbons occurring in carbonate deposits of the Werra (Zechstein Limestone - Ca1 ) and Stassfurt (Main Dolomite - Ca2) cyclothems. Several tens gas fields have been hitherto discovered within the Rotliegend sandstones and the Zechstein limestones. Reservoirs are the clastic, terrestrial deposits of the Lower Permian and calcareous, biogenic carbonates of the Zechstein. Evaporates, mainly salts of the Werra cyclothem, are the regional sealing for the mentioned reservoirs. Natural gas accumulated in the Rotliegend sandstones and the Zechstein limestones is of the same origin: it was generated from organic matter occurred in the Carboniferous rocks and it migrated to higher places where it became concentrated within favourable structural or lithofacies conditions. High nitrogen content in the natural gas from the Polish Permian Basin is explained that nitrogen is generated from an organic matter within a sedimentary basin at higher temperatures than methane. Location of high helium concentration corresponds to the area of highest heat flow during the Late Permian, Triassic and Jurassic times, evidencing the Late Permian-Early Mesozoic rifting process. Numerous oil gas fields discovered in the Main Dolomite (Ca2) unit constitute it as one of the most important exploration target in the Polish Basin. It composes the closed hydrodynamic system sealed from the top and the bottom by evaporates. Both the source rocks and reservoirs are characteristic for this unit. Influence of the burial and thermal history of the Polish Basin on a petroleum play generation within the Main Dolomite unit is clearly visible. The previous and the present petroleum discoveries in the Polish Permian Basin, comparing to the other petroleum provinces in Poland, indicate it as a main exploration target.
Źródło:
Przegląd Geologiczny; 2007, 55, 12/1; 1003-1015
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:
Nycteroleter affinities of a Permian parareptile from the South African Karoo Basin
Autorzy:
Cisneros, J C
Tsuji, L.A.
Powiązania:
https://bibliotekanauki.pl/articles/23121.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Karoo Basin
paleontology
Permian
parareptile
Tapinocephalus
South Africa
Middle Permian
Opis:
The Middle Permian Tapinocephalus Assemblage Zone in South Africa has produced a rich record of tetrapods dominated by dinocephalian therapsids and pareiasaurid parareptiles. In this study we reassess the affinities of a specimen from this horizon previously identified as a procolophonoid and provide evidence that it is instead referable to a nycteroleter parareptile, an identification that is more compatible with the age of this fossil. Accordingly, this specimen represents the first record of a nycteroleter in Gondwana.
Źródło:
Acta Palaeontologica Polonica; 2009, 54, 1; 165-169
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Callibrachion and Datheosaurus, two historical and previously mistaken basal caseasaurian synapsids from Europe
Autorzy:
SPINDLER, FREDERIK
FALCONNET, JOCELYN
FRÖBISCH, JÖRG
Powiązania:
https://bibliotekanauki.pl/articles/945734.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
synapsida
caseasauria
carboniferous
permian
autun basin
france
intra-sudetic basin
poland
Opis:
This study represents a re-investigation of two historical fossil discoveries, Callibrachion gaudryi (Artinskian of France) and Datheosaurus macrourus (Gzhelian of Poland), that were originally classified as haptodontine-grade sphenacodontians and have been lately treated as nomina dubia. Both taxa are here identified as basal caseasaurs based on their overall proportions as well as dental and osteological characteristics that differentiate them from any other major synapsid subclade. As a result of poor preservation, no distinct autapomorphies can be recognized. However, our detailed investigations of the virtually complete skeletons in the light of recent progress in basal synapsid research allow a novel interpretation of their phylogenetic positions. Datheosaurus might represent an eothyridid or basal caseid. Callibrachion shares some similarities with the more derived North American genus Casea. These new observations on Datheosaurus and Callibrachion provide new insights into the early diversification of caseasaurs, reflecting an evolutionary stage that lacks spatulate teeth and broadened phalanges that are typical for other caseid species. Along with Eocasea, the former ghost lineage to the Late Pennsylvanian origin of Caseasauria is further closed. For the first time, the presence of basal caseasaurs in Europe is documented.
Źródło:
Acta Palaeontologica Polonica; 2016, 61, 3; 597-616
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
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:
The sulphur and oxygen isotopic composition of anhydrite from the Upper Pechora Basin (Russia) : new data in the context of the evolution of the sulphur isotopic record of Permian evaporites
Autorzy:
Galamay, A. R.
Meng, F.
Bukowski, K.
Ni, P.
Shanina, S. N.
Ignatovich, O. O.
Powiązania:
https://bibliotekanauki.pl/articles/2060517.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Upper Pechora Basin
Permian
isotopic composition
anhydrite
pyrite
sulphate reduction
Opis:
This study describes a new determination of the S and O isotope composition of Lower Permian (Kungurian) anhydrites from the Upper Pechora Basin, Cis-Ural region, Russia. δ34S values in sulphate facies vary from +13.7 to +15.1‰; and δ18O values range from +9.3 to +10.4‰. The values of d34S and d18O of anhydrite from halite facies varies from +12.6 to +15.0‰ and +7.5 to +10.9‰ respectively. The quantitative ratio of pyrite content from the water-insoluble residue (silty-sand fraction) is characterized by extremely low (<<1%) to high (4–5%) steep gradation values. The increased presence of pyrite indicates the influence of bacterial sulphate reduction. The sulphate reduction process was more intense, especially when evaporites were formed in mud. The narrow fluctuation range of sulphur and oxygen isotopes values of the measured anhydrite indicates low levels of fractionation. It was established that during the Permian, evolutionary changes in the content of sulphate ions in sea water correlate with the sulphur isotopic composition of marine evaporites
Źródło:
Geological Quarterly; 2016, 60, 4; 990--999
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The occurrence and characteristics of reservoir waters from the Silesian segment of the Rotliegend Basin (SW Poland)
Autorzy:
Machowski, W.
Papiernik, B.
Machowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/191780.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Rotliegend Basin
Permian
gas accumulations
hydrodynamic conditions
rNa\rCl coefficient
Opis:
The paper considers the potential for new discoveries of gas accumulations in the Rotliegend Basin on the basis of the analysis of reservoir and hydrochemical tests and the results of reservoir simulations. Several reservoir simulations carried out in the study area (history of production and history matching) demonstrate the regional migration of reservoir waters. The integration of the simulations with mathematical calculations (in consistency with Hubbert’s theory) and with hydrochemical results permits recognition of the regional hydrody- namics and the potential localization of gas fields. In an analysis of the current hydrodynamic and hydrochemical conditions of reservoir waters in the Rotliegend (Lower Permian) strata, attention was focused on part of the sedi- mentary Rotliegend Basin, located south of the Wolsztyn-Pogorzela High, utilizing materials available from drilling and noting the differences between this area and the northern sub-basin. The current hydrogeological conditions and the dynamics of fluid transfer in the Rotliegend Basin are an effect of structural rearrangement during the Laramide orogeny. The basin hypsometry, resulting from the Laramide movements, became the decisive factor that controlled the filtration of groundwater. The recent hydrodynamic characteristics of migrating reservoir waters are reflected in the P-T (fluid pressure and temperature gradient) distribution pattern. Hence, the analysis of this distribution may reveal reactions that have taken place over time. It must be emphasized that clusters of gas fields are located in the zones occupied by stagnant groundwater (rNa/rCl<0.75) under hydrostatic (or slightly higher) pressure.
Źródło:
Annales Societatis Geologorum Poloniae; 2014, 84, 2; 167-180
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrocarbon generation modelling in the Permian and Triassic strata of the Polish Basin: implications for hydrocarbon potential assessment
Autorzy:
Botor, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/31342965.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
hydrocarbon potential
kerogen transformation ratio
thermal maturity modelling
Polish Basin
Permian
Triassic
Opis:
Hydrocarbon generation in the Zechstein Main Dolomite and Upper Triassic potential source rocks of the Polish Basin was investigated by 1-D thermal maturity modelling in 90 boreholes across the basin. This identified major zones potentially worthy of further exploration efforts. The maximum burial depth of the Zechstein Main Dolomite and Upper Triassic reached >5 km during the Late Cretaceous leading to maximum thermal maturity of organic matter. Hydrocarbon generation development reveals considerable differences between particular zones of the Zechstein Main Dolomite and Upper Triassic. The kerogen transformation ratio (TR) in the Zechstein Main Dolomite reached values approaching 100% along the basin axis. The TR in the Upper Triassic source rocks is generally lower than in the Zechstein Main Dolomite due to lesser burial. The Upper Triassic source rocks have the highest TR values (>50%) along the basin axis, in the area between boreholes Piła IG 1 and Piotrków Trybunalski IG 1, with the most pronounced zone in the Krośniewice Trough (i.e., between the Krośniewice IG 1 and Budziszewice IG 1 boreholes), where the TR reached >90%. The Zechstein Main Dolomite and Upper Triassic entered the oil window in the Late Triassic to Early–Middle Jurassic, respectively. Hydrocarbon generation continued until the Late Cretaceous, and was completed during tectonic inversion of the basin.
Źródło:
Geological Quarterly; 2023, 67, 2; art. no. 20
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sand sheets interaction with aeolian dune, alluvial and marginal playa beds in Late Permian Upper Rotliegend setting (western part of the Poznań Basin, Poland)
Autorzy:
Kiersnowski, H.
Buniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/2060530.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Upper Rotliegend
sand sheet
marginal playa
Poznań Basin
Polska
Late Permian climate
Opis:
The Upper Rotliegend deposits of the western part of the Poznań Basin, Poland, represent three main sedimentary environments: aeolian desert (dunes and sand sheets), alluvial plain (alluvial covers with wadi deposits) and marginal playa. In arid periods, dunes prograded into areas dominated by alluvial sedimentation. During wet periods, alluvial deposits eroded the aeolian deposits and prograded onto dune fields. Playa sediments were deposited among aeolian or alluvial sediments during periodic expansions of the playa. These aeolian, alluvial and playa deposits are arranged in depositional sequences. Boundaries between sequences are marked by rapid changes in depositional facies; and by erosional bounding surfaces. Maximum Wetting Surfaces have been distinguished within some parts of the depositional sequences, which enable regional correlations. The sections studied are composed of thick sequences of sand and sand-gravel sheets. The sand sheets represent periods of stratigraphic condensation. Systems of sand sheets are typical of marginal areas of ergs. We distinguish nine depositional complexes (units) numbered 1-9 from base to top, respectively. These subdivisions are based on the interpretation of the sedimentological record in palaeoclimatic terms, and in terms of major erosional boundaries, which are probably of regional extent. In the aeolian deposits, major boundaries are associated with deflation surfaces related to the stabilization of groundwater levels. In the marginal playa deposits, the most important boundaries are correlated to transgressive surfaces that developed during playa expansion. Time gaps represented by the boundaries and the scale of erosion below them, are difficult to estimate. The depositional system of the Upper Rotliegend was dominated by sand and sand-gravel sheets, and is either a unique feature in the entire Southern Permian Basin or, as we assume, sand sheets occur more com monly in the Rotliegend than has been previously thought.
Źródło:
Geological Quarterly; 2016, 60, 4; 771--800
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Permian andesitic tuff ring at Rožmitál (the Intra-Sudetic Basin, Czech Republic) : evolution from explosive to effusive and high-level intrusive activity
Autorzy:
Awdankiewicz, M.
Awdankiewicz, H.
Rapprich, V.
Stárková, M.
Powiązania:
https://bibliotekanauki.pl/articles/2060477.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
post-collisional volcanism
andesite lavas'
phreatomagmatic deposits
tuff ring
Permian
Intra-Sudetic Basin
Opis:
Mafic, monogenetic volcanism is increasingly recognized as a common manifestation of post-collisional volcanism in late Variscan, Permo-Carboniferous intramontane basins of Central Europe. Although identification of individual eruptive centres is not easy in these ancient successions, the Permian Rožmitál andesites in the Intra-Sudetic Basin (NE Bohemian Massif) provide an exceptionally detailed record of explosive, effusive and high-level intrusive activity. Based on field study and petrographic and geochemical data on pyroclastic and coherent rocks, the Rožmitál succession is interpreted as the proximal part of a tuff ring several hundred metres in diameter. Initial accumulation of pyroclastic fall and surge deposits occurred during phreatomagmatic eruptions, with transitions towards Strombolian eruptions. Gullies filled with reworked tephra document periods of erosion and redeposition. Andesitic blocky lavas capped the volcaniclastic succession. Invasion of lavas into unconsolidated sediments and emplacement of shallow-level intrusions in near-vent sections resulted in the formation of jigsaw- and randomly-textured peperites. Most geochemical differences between coherent andesites and pyroclastic rocks can be linked to incorporation of quartz-rich sediments during the explosive eruptive processes and to later cementation of the volcaniclastic deposits by dolomite. The Rožmitál tuff ring could have been one of several phreatomagmatic centres in a monogenetic volcanic field located on an alluvial plain.
Źródło:
Geological Quarterly; 2014, 58, 4; 759--778
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Palinostratygrafia, paleoekologia i paleoklimat późnego permu i triasu niecki Nidy
Palynostratigraphy, palaeoecology and palaeoclimate of the late Permian and Triassic of the Nida Basin
Autorzy:
Fijałkowska-Mader, A.
Powiązania:
https://bibliotekanauki.pl/articles/2062140.pdf
Data publikacji:
2013
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
palinostratygrafia
paleośrodowisko
paleoklimat
perm
trias
niecka Nidy
palynostratigraphy
palaeoenvironment
palaeoclimate
Permian
Triassic
Nida Basin
Opis:
Praca stanowi pierwsze kompleksowe opracowanie biostratygrafii utworów permu górnego i triasu niecki Nidy. Wyróżniono dziesięć poziomów palinologicznych. Wyniki badań mikroflorystycznych potwierdziły problematyczną dotychczas obecność utworów późnego anizyku i wczesnego ladynu. Pozwoliły także na sprecyzowanie granic między indem i olenkiem oraz norykiem i retykiem. Wyniki zastosowanych w badaniach palinologicznych analiz paleośrodowiskowej i paleoklimatycznej wykazały dominację form sucholubnych w zespołach miosporowych. Wskazują również na przewagę klimatu suchego w późnym permie i triasie na badanym obszarze. Zwiększoną ilość mikroflory wilgotnolubnej obserwuje się w olenku, ladynie, noryku i retyku. Przeważająca w późnym permie i triasie kontynentalna sedymentacja w środowiskach rzecznych, jeziornych, playi i sebki była przerywana przez transgresje morskie, które miały miejsce w późnym wuchiapingu, wczesnym indzie, anizyku i ladynie.
Ten miospore zones are identified in the Upper Permian and Triassic succession of the Nida Basin. This is the first complete biostratigraphical study of these sediments. The palynological investigation confirmed the presence of the late Anisian and early Ladinian. In addition, they allowed determining more precisely the boundaries between Induan and Olenekian as well as Norian and Rhaetian. Xeromorphic elements dominate the Upper Permian and Triassic palynomorph spectra from the Nida Basin and reflect a mainly dry palaeoclimate. Significant numbers of hygromorphic elements indicating temporarily humid phases, occur in the Olenekian, Ladinian, Norian and Rhaetian. Continental sedimentation in fluvial, lacustrine, coastal, playa and sabkha environments prevailed during most of the Late Permian and Triassic but was interrupted by marine transgressions in the late Wuchiapingian, early Induan, Anisian as well as Ladinian.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2013, 454; 15--70
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zechstein marine deposits in the Wleń Graben (North Sudetic Synclinorium, SW Poland) : new insights into the palaeogeography of the southern part of the Polish Zechstein Basin
Autorzy:
Kowalski, A.
Durkowski, K.
Raczyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/973706.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Polish Zechstein Basin
dolomites
Permian
Triassic
Transitional Terrigenous Series
PZt
North Sudetic Synclinorium
Wleń Graben
Opis:
This paper presents the results of sedimentological studies of Zechstein marine deposits occurring in the Wleń Graben, a tectonic unit located in the southeastern part of the North Sudetic Synclinorium (NSS; Western Sudetes, SW Poland). Owing to poor exposure, small thickness, and lack of palaeontological data, the stratigraphy and age of these rocks were determined solely on the basis of analogies with adjacent areas. New findings described here, including faunal remains (remains of bivalves, including Liebea sp.), geopetal structures, clastic fills of halite crystals, moulds and bioturbation, shed new light on the environmental interpretations of the Zechstein in this part of the NSS. It should be assumed that at least two types of deposit may be assigned to the marine Zechstein in the Wleń Graben area, namely sparitic and microsparitic dolomite (PZ3) and the overlying deposits of the heterolithic series (PZt). These deposits were formed during the late Zechstein transgression, when the study area was in the marginal southwesternmost part of a newly formed shallow-marine bay of the Polish Zechstein Basin. In the central part of the present-day Wleń Graben, a shallow-marine bay (lagoon?) was dominated by carbonate sedimentation. A north-dipping mud plain, periodically flooded by a shallow sea, occurred in the southern part of the area. The paper summarises the present state of research on Permian deposits in the Wleń Graben, the first comprehensive lithostratigraphic scheme is suggested, and a new concept of the palaeogeographic evolution of the area in the Early and Late Permian is proposed.
Źródło:
Annales Societatis Geologorum Poloniae; 2018, 88, 4; 321-339
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł

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