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    Wyświetlanie 1-6 z 6
    Tytuł:
    The first record of red till lithotype in western Poland and its implication for glacial stratigraphy and palaeogeography
    Autorzy:
    Krzyszkowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/191966.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    till petrography
    red till lithotype
    Elsterian
    Western Poland
    Opis:
    The first site in western Poland with a red till lithotype has been discovered in the Trzebnica Hills, southwestern Poland. This is a clay-rich, red till with dominant East-Baltic material (East-Baltic lithotypes). The red till forms the uppermost part of the Borowiec Till, a till from the Sanian 2 (Elsterian) Glaciation. Moreover, some Borowiec tills in the Barycz River valley (north) and the Prosna River valley (east) contain in their uppermost parts a dolomite-rich horizon, which, although only greyish-brown, also represents the East-Baltic till lithotypes. The late Elsterian ice sheet in Poland was developed as several ice-lobes with different ice dynamics. The lobes from western Poland advanced to their maximum extent earlier than the eastern lobes. In the latest phase of the glaciation, the western lobes retreated, while the eastern ones advanced from NE to SW. Their presence is proved by deposition of the Borowiec Till and East-Baltic till lithotypes.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2010, 80, No 1; 53-67
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phases of Palaeogene and Neogene tectonic evolution of selected grabens in the Wielkopolska area, central-western Poland
    Autorzy:
    Widera, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/191603.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    tectonic phases
    grabens
    Palaeogene
    Neogene
    Wielkopolska area
    central-western Poland
    Opis:
    In the Wielkopolska (Great Poland) area, there occur numerous tectonic grabens which were active in the Palaeogene and Neogene. The similarities and differences between their development are presented on the example of the Czempiń, Szamotuły, Lubstów, and Władysławów Grabens. Using various methods of palaeotec- tonic analysis, the stages of accelerated subsidence of the grabens, i.e. tectonic phases, were indicated. The extent of vertical movement in the studied grabens were compared and it was affirmed that there is a connection between the occurrence of older dislocations and salt structures in the deep basement. From among the examined grabens, the Lubstów Graben is the deepest one, and shows the most complex geological structure. The Czempiń and Szamotuły Grabens are characterized by relatively simple geological structure, where the stratigraphic complete- ness and tectonic style are very legible. These three grabens were active in different tectonic stages from the turn of the Eocene/Oligocene till the end of the Neogene, and perhaps also in the Prepleistocene. The Władysławów Graben is a very shallow tectonic structure and its evolution lasted for the shorter period of time. The time of its development extended from the Early through the Middle Miocene. These grabens provide a good example of the relationship between the fault throw and graben location. The Czempiń, Szamotuły, and Lubstów Grabens, connected with deeply-rooted dislocations, came to existence in the Pyrenean phase (latest Eocene - Early Oligocene). However, the Władysławów Graben was affected mainly by salt structure activity. Thus, its first stage of tectonic evolution took place in the Savian phase (Early Miocene).
    Źródło:
    Annales Societatis Geologorum Poloniae; 2004, 74, No 3; 295-310
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    1-D modelling of the hydrocarbon generation history of the Jurassic source rocks in the Tarnogród–Stryi area (SE Poland – western Ukraine)
    Autorzy:
    Kosakowski, P.
    Wróbel, M.
    Koltun, Y. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/191544.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    source rocks
    1-D modelling
    hydrocarbon generation
    hydrocarbon expulsion
    Jurassic
    SW Poland
    Western Ukraine
    Opis:
    Reconstruction of burial and thermal history was modelled for the Mesozoic strata in the basement of the Polish and Ukrainian parts of the Carpathian Foredeep and in the marginal part of the Outer Carpathians. The 1-D modelling was carried out in profiles of the wells located in the area between Tarnogród and Stryi towns. In the Polish part, the modelling were performed in the profiles of the Księżpol 15, Lubliniec 9, Markowice 2 and Opaka 1 wells, and in the Ukrainian part in the profiles of the Chornokuntsi 1, Korolyn 6, Mosty 2, Podiltsi 1 and Voloshcha 1 wells. The geochemical characteristics of the Mesozoic stratigraphical horizons revealed that the best features of source rocks were present in the Middle Jurassic strata in the Polish part of the study area and in the Middle and Upper Jurassic strata in the Ukrainian part. Within these strata, the horizons of source rocks were distinguished and their quantitative evaluations were characterized. For these horizons, reconstruction of processes for hydrocarbon generation and expulsion were performed. The source rocks in the Polish part reached maturity only in the initial phase of “oil window”. However, the maturity achieved towards the end of the Upper Jurassic was insufficient to exceed the 10% threshold of the transformation degree for hydrocarbon generation. Therefore, the amount of generated hydrocarbons was minimal. Slightly higher maturity of organic matter in the Ukrainian part resulted in exceeding the thresholds of kerogen transformation and the initiation of hydrocarbon generation and expulsion processes. The process began after the deposition of thicker Miocene formations and developed even up to the main phase of the "oil window". The amount of the generated hydrocarbons reached ca. 150 mg/g TOC with an insignificant volume of expulsion.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2011, 81, No 3; 473-485
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of hydrocarbon potential of the Lower Palaeozoic strata in the Tarnogród–Stryi area (SE Poland and western Ukraine)
    Autorzy:
    Więcław, D.
    Kosakowski, P.
    Kotarba, M.J.
    Koltun, Y. V.
    Kowalski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/191878.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    source rock
    hydrocarbon potential
    Cambrian
    Ordovician
    Silurian
    Carpathian Foredeep basement
    SE Poland
    Western Ukraine
    Opis:
    Quantity, genetic type and maturity of organic matter dispersed in the Lower Palaeozoic sequence from the Lower Cambrian to Silurian strata of the Polish and Ukrainian parts of the Carpathian Foredeep basement in the Tarnogród–Stryi area were evaluated based on the results of geochemical analyses of 475 rock samples collected from 45 wells. The best source rocks were found in the Silurian strata where the present total organic carbon (TOC) content is up to 2.6 wt%. They occur in the vicinity of Wola Obszańska, where the median of the present and the initial total organic carbon (TOC) contents in the individual wells amount to 0.98 and 1.6 wt%, respectively. The Cambrian and Ordovician strata have a poorer hydrocarbon potential and their present TOC content never exceeds 1 wt%. In all of the investigated Lower Palaeozoic strata, organic matter is represented by the oil-prone Type-II kerogen deposited in anoxic or sub-oxic conditions. The maturity of source rocks ranges from early mature (the initial phase of the low-temperature thermogenic processes) in selected zones of the Silurian strata in the vicinity of Wola Obszańska, through the middle and the final phase of “oil window” in the Ordovician and Cambrian strata in the Polish part of the study area, to the overmature stage in the Ordovician strata in the south-eastern part of the study area (Ukraine).
    Źródło:
    Annales Societatis Geologorum Poloniae; 2012, 82, 1; 65--80
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Precambrian and Palaeozoic basement of the Carpathian Foredeep and the adjacent Outer Carpathians (SE Poland and western Ukraine)
    Autorzy:
    Buła, Z.
    Habryn, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/191447.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    basement
    Carpathians
    Carpathian Foredeep
    East European Platform
    Trans-European Suture Zone
    south-eastern Poland
    Western Ukraine
    Opis:
    In south-eastern Poland and western Ukraine, the Outer Carpathian orogen and the Carpathian Foredeep developed in the foreland of the East-European Platform (Baltica). The area consists of a number of tectonic units included in the Trans-European Suture Zone (TESZ): the Łysogóry–Radom and Małopolska blocks in the territory of Poland, and the Rava Rus’ka Zone, Kokhanivka Zone and Leżajsk Massif in the Ukraine. The development of the TESZ began in the (?Middle) Late Neoproterozoic and was associated with rifting processes taking place along the western edge of the East-European Craton (Baltica) during the break-up of the Rodinia/ Pannotia supercontinent. The passive margin of Baltica evolved into the TESZ during collisional and/or strike-slip movements. In the TESZ (Małopolska Block and Leżajsk Massif), Ediacaran flysch-type siliciclastics were affected by weak metamorphism and folding during the Cadomian orogeny. The development of Cambrian deposits in the East-European Craton, Łysogóry–Radom Block, northeastern part of the Małopolska Block (Kielce Fold Belt) and in the Rava Rus’ka and Kokhanivka zones was associated with the post-rift thermal subsidence. Tectonic movements (so-called Sandomierz phase), which occurred probably due to an oblique collision of the Małopolska Block (included into the passive margin of Baltica) and the East-European Craton during late Middle Cambrian to Late Cambrian (possibly also Early Ordovician) times, resulted in the following: (1) development of stratigraphical (?erosional) gaps in the Middle and Upper Cambrian sections of the Lublin–Podlasie slope of the East-European Craton and the Kielce Fold Belt in the Małopolska Block; (2) intense tectonic subsidence of the Łysogóry–Radom Block during the deposition of Middle and Upper Cambrian sediments; (3) development of compressional folds in the Lower Cambrian to lower Middle Cambrian deposits of the Kielce Fold Belt on the Małopolska Block. Ordovician–Silurian series were deposited in a typical flexural foredeep basin, in which subsidence and deposition rates accelerated during Late Silurian (Ludlow–Pridoli) and Early Devonian (Lochkovian) times. It is postulated that the present position of the Małopolska Block relative to the Łysogóry–Radom Block and East-European Craton resulted from post-Silurian dextral movements between the Małopolska Block and the East-European Craton. Devonian–Carboniferous deposits occur only in the Małopolska Block located in the Variscan foreland. The Middle-Late Devonian and Early Carboniferous shallow-marine carbonate platforms developed under an extensional regime. The siliciclastic Upper Visean–Lower Namurian A Culm series were deposited in the flexural Variscan foreland basin. During the Late Namurian A, the Małopolska Block was uplifted in response to the build-up of compressional foreland stresses. During post-Carboniferous times, the Precambrian and Palaeozoic deposits were subject to erosion and restructuring during the Alpine orogeny.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2011, 81, No 3; 221-239
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microbial gas system and prospectives of hydrocarbon exploration in Miocene strata of the Polish and Ukrainian Carpathian Foredeep
    Autorzy:
    Kotarba, M. J.
    Peryt, T. M.
    Koltun, Y. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/191552.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    microbial gas
    thermogenic gas
    source rocks
    hydrocarbon potential
    organic geochemistry
    prospectives of hydrocarbon exploration
    autochthonous Miocene strata
    Bilche-Volytsia Unit
    Carpathian Foredeep
    SW Poland
    Western Ukraine
    Opis:
    Molecular composition of natural gases accumulated in autochthonous Miocene strata of the Polish and Ukrainian Carpathian Foredeep is dominated by methane, which usually constitutes over 98 vol%. Methane was generated by the carbon dioxide reduction pathway of microbial processes. Ethane was generated both during microbial and thermogenic processes ("oil window") and propane at the initial stage of the low-temperature thermogenic processes, and also by the microbial processes. The rhythmic and cyclic deposition of Miocene clays and sands as well as the vigorous generation of microbial methane caused that the gas produced in claystone beds was accumulated in the overlaying sandstones, and capped, in turn, by the succeeding claystones. Such generation and accumulation system of microbial gases gave rise to the formation of multi-horizontal gas fields. Analysis of the distribution of immature humic dispersed organic matter in the Upper Badenian and Lower Sarmatian sequences indicates that it is practically homogeneous. A migration range of microbial gases was insignificant and locations of their accumulations would depend only on the existence of proper type of traps (compactional anticlines situated above basement uplifts, sealed by the Carpathian Overthrust and/or by faults; stratigraphic pinching out and stratigraphic traps related to unconformities). Another situation is encountered in the south, beneath the Carpathian Overthrust. The thickness of the autochthonous Miocene strata in this area is more than 1,500 metres. Geochemical studies reveal that from a depth of 2,500 metres starts the process of low-temperature thermogenic hydrocarbon generation (“oil window”). At greater depths, more than 7,500 metres, within the autochthonous Lower Miocene basin only the high-temperature methane ("gas window") could be produced and accumulated.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2011, 81, No 3; 523-548
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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