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    Wyświetlanie 1-3 z 3
    Tytuł:
    Sedymentacja osadów węglonośnej sukcesji Górnośląskiego Zagłębia Węglowego : kierunki badań i aktualny stan wiedzy
    Sedimentation of the coal-bearing succession in the Upper Silesia Coal Basin: research trends and the current state of knowledge
    Autorzy:
    Gradziński, R.
    Doktor, M.
    Kędzior, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074364.pdf
    Data publikacji:
    2005
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    sedymentologia
    węglonośna sukcesja
    Górnośląskie Zagłębie Węglowe
    sedimentation
    coal-bearing succession
    Pennsylvanian
    Upper Silesian Coal Basin
    Polska
    Opis:
    The coal-bearing succession in the Upper Silesia Coal Basin consists of molasse deposits filling a flexural foredeep basin. Analysis of lithofacies in cores from deep boreholes revealed the presence of depositional environments typical of alluvial plains and coastal (in a broad sense) environments. Accumulation compensated regional subsidence, so that general depositional surface remained nearly flat. The higher part of the csuccession was laid in fluvial systems, while the lower part mostly in fluvial systems and subordinately in complex coastal systems. Reconstruction of depositional architecture has shown lateral variation in thickness and extent of individual lithosomes, and also pointed to the role of peat-compaction control in shaping their 3D geometry. Sedimentation was controlled by both autigenic and allogenic factors.
    Źródło:
    Przegląd Geologiczny; 2005, 53, 9; 734-741
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Warunki temperaturowe w czasie diagenezy piaskowców pensylwanu w rejonie Morza Bałtyckiego
    Thermal conditions during diagenesis of Pennsylvanian sandstones in the Baltic Sea area
    Autorzy:
    Kozłowska, Aleksandra
    Powiązania:
    https://bibliotekanauki.pl/articles/2075972.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    temperatura
    minerały autogeniczne
    diageneza
    piaskowiec
    Pensylwania
    Bałtyk
    temperature
    autigenic minerals
    diagenesis
    sandstone
    Pennsylvanian
    Baltic Sea
    Opis:
    The purpose of this study is to reconstruct the temperature conditions in the sediment during the diagenesis history of Pennsylvanian sandstones drilled in three deep boreholes in the Baltic Sea. These sandstones are represented by quartz and sublithic arenites and wackes, cemented by matrix and autigenic minerals. Among the autigenic minerals: quartz, clay minerals (kaolinite, dickite, illite) and carbonates (calcite, dolomite, ankerite) are the temperature indicators. The presence of dickite in the sediments indicates a temperature of about 120°C. Quartz and carbonate crystallization temperatures, based on the analysis of fluid inclusions, are estimated to be in the range of 70-180°C. The K/Ar age of the fibrous illite thatforms at the final stage of diagenesis (above 100° C), was determined at 262 ±2 to 247 ±4 My, i.e. from the Middle Permian to the Early Triassic. It determines a length of the post-deposition period, when the deposits were permeable for pore fluids.
    Źródło:
    Przegląd Geologiczny; 2019, 67; 167--168
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Uwęglony i zsylifikowany pień kordaita w warstwach libiąskich (westfal D – moskow) koło Chrzanowa, Górnośląskie Zagłębie Węglowe
    Carbonified and silicified cordaitalean wood in the Libiąż Beds (Westphalian D – Moscovian) near Chrzanów, Upper Silesian Coal Basin, Poland
    Autorzy:
    Lipiarski, I.
    Pawlikowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075097.pdf
    Data publikacji:
    2014
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    silicified and carbonificated wood
    palaeobotany
    petrography
    Dadoxylon
    Late Pennsylvanian
    Upper Silesian Coal Basin
    Polska
    zsilikonowane i uwęglone drewno
    paleobotanika
    petrografia
    Górnośląskie Zagłębie Węglowe
    Polska
    Opis:
    The sample in the formof the drill core 9 cm long and 6 cm in diameter reveals exclusively secondary wood. No growth rings have been observed. Tracheids have the width 20–50 μm (mean 25 μm) in the tangential section. Pitting on the radial walls is mainly uniseriate, partly biseriate or triseriate. The uniseriate pits are circular or oval. The biseriate and triseriate pits are polygonal (often hexagonal), distributed adjacent to each other, and densely cover the whole width of the walls. The diameter of the pits is 12±2 μm. The poruses are circular. Medullary rays are mostly uniseriate, composed of 1–46 layers; mostly between a fifteen or so and 30 layers. As the investigations are at the preliminary stage, the author prefers to use only the generic term to name the wood, namely Dadoxylon sp., without giving it a species designation. Mineralogical investigation of silicified wood was conducted using polarizing light microscope. Observations showed various the optical orientation of quartz crystals filling up cells of wood. It is observed as differentiated disapperance of polarized light. This phenomenon documents that beginning of growth of quartz crystals (center of crystallization) was located at various places of cell walls. This situation is the result of beginning of destruction of organic compounds of wall structure of cells at various places. Additionally investigation documents various intensity of silification of cordaitalean structure. Because of this the process of silification is different at various parts of tissues and one can observe parts fully petrified and completely without mineralization. The structure of wood tissues is at same places damaged by crystallizing quartz. This phenomenon is observed at the tissues where silification was continued and size of newly formed quartz crystals is overgrowth size wood cells of wood. Mentioned zones of cell destruction are especially well seen at placed where silification developed parallel to orientation of biological wood structures. In summary one can say that mentioned processes were the reason of only partial petrification (silification) of examined cordaitalean second wood.
    Źródło:
    Przegląd Geologiczny; 2014, 62, 1; 22--27
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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