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    Wyświetlanie 1-6 z 6
    Tytuł:
    Nowe dane o zlodowaceniu Karkonoszy na podstawie badań w dolinie Łaby, Upy i Łomnicy
    Autorzy:
    Engel, Z.
    Krizek, M.
    Treml, V.
    Nývlt, D.
    Traczyk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/295112.pdf
    Data publikacji:
    2008
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    zlodowacenie
    Karkonosze
    dolina Łaby
    dolina Upy
    dolina Łomnicy
    Źródło:
    Landform Analysis; 2008, 9; 111-114
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Signatures of Late Neoproterozoic Gondwana assembly and Maronian glaciation in Lesser Himalaya: a palaeogeographical and stratigraphical approach
    Autorzy:
    Umar, M.
    Betts, P.
    Khan, M. M. S.
    Sabir, M. A.
    Farooq, M.
    Zeb, A.
    Jadoon, U. K.
    Ali, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/139442.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Neoproterozoic
    palaeogeography
    Glaciation
    Rodinia break-up
    Lesser Himalaya
    neoproterozoik
    paleogeografia
    zlodowacenie
    Rodinia
    rozpad
    Himalaje Małe
    Opis:
    Stratigraphical and sedimentological analyses of Late Neoproterozoic successions in Lesser Himalaya are combined herein with palaeogeographical considerations and comparisons with equivalent successions in India and South China. The succession starts with the Hazara Formation, which contains complete and incomplete Bouma sequences suggesting its deposition in deep marine turbidite settings. The overlying Tanawal Formation, rich in massive sandstone, shale and siltstone, was deposited in shallow marine conditions, as indicated by the presence of parallel lamination, large scale tabular, trough cross- and hummocky cross-stratifications. The Tanawal Formation facies shift laterally from proximal (south-southeast) to distal (north-northwest). The glaciogenic Tanaki Boulder Bed, overlying the Tanawal Formation, was deposited during the Maronian glaciation. It is equivalent to the Blaini Formation of India, and to the Sinian diamictites of South China. The Abbottabad Formation of Cambrian age overlies the Tanaki Boulder Bed, and is composed of dolomite, chert nodules and phosphate-rich packages; similar successions are documented in India and South China at the same stratigraphical interval. The similarities of the Neoproterozoic successions of Lesser Himalaya (both in Pakistan and India) and South China suggests their possible proximity during the break-up of Rodinia and the assembly of the Gondwana Supercontinent.
    Źródło:
    Acta Geologica Polonica; 2015, 65, 1; 1-19
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozwój strefy glacimarginalnej na przedpolu Beskidu Śląskiego (dział bielski Pogórza Śląskiego)
    Evolution of the glaciomarginal zone in the Silesian Beskid foothill (Bielsko division of the Silesian Foothills)
    Autorzy:
    Salamon, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075125.pdf
    Data publikacji:
    2014
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    glaciomarginal zone
    glaciolacustrine sedimentation
    Sanian Glaciation
    Carpathian Foothill
    strefa glacimarginalna
    sedymentacja glacialna
    zlodowacenie
    Pogórze Śląskie
    Opis:
    The paper presents the succession of Sanian Glaciation sediments recognized in the Swiętoszówka site, Southern part of the Silesian Foothills (Bielsko division). The following deposits were found: a unit ofgravels deposi- ted in a system offoremountain alluvialfans, a unit of silts deposited in a glaciomarginal dammed lake, and a glacial till. Glaciogenic deposits are covered with loess-like deposits. The development of the glaciomarginal zone was influ- enced mainly by the pattern ofbasement relief. In the northern part of the foothill, in the northward-oriented valleys, glacially dammed lakes were mainlyformed. During transgression, waterfrom these reservoirs was pushed in front of the ice-sheet margin towards the southern part of the low-relieffoothill. The individual lakes probably merged there into one larger glaciomarginal lake. It was characterized by low-energy conditions and deposition mainly from suspension. Sedimentation style in the lake changed over time and was dependent on the size and shape of the lake and its position in relation to the ice-sheet margin, which determined thewidth and distribution ofzones of sediment supply and the dynamics ofdepositional processes in the lake.
    Źródło:
    Przegląd Geologiczny; 2014, 62, 2; 103--110
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lithological indicators of loess sedimentation of SW Poland
    Autorzy:
    Krawczyk, M.
    Ryzner, K.
    Skurzyński, J.
    Jary, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/100800.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Śląski. Wydział Nauk o Ziemi
    Tematy:
    Dolny Śląsk
    gleba
    zmiana klimatu
    zlodowacenie
    Silesian Lowland
    loess-soil sequence
    grain-size indicator
    climate change
    last glaciation
    Opis:
    High-resolution grain-size investigations were carried out in two SW Polish loess sections: Biały Kościół (Niemcza-Strzelin Hills) and Zaprężyn (Trzebnica Hills). Each sequence was sampled by using the same methodology and samples were taken at 5 centimeters intervals. The particle size distribution was obtained with a Mastersizer 2000 laser, used for diffraction methods. From the obtained results the basic parameters and grain size indicators were calculated: Mz, Grain Size Index ratio, U-ratio and the percentage content of clay (< 4μm) and sand (> 63 μm). Both loess- soil sequences are composed of interfluve and slope loess facies and consist of five litho-pedostratigraphic units developed during the Late Pleistocene and Holocene: two loess units L1LL1, L1LL2 and three polygenetic fossil soils sets S0, S1 and L1SS1. The distance between these two profiles is about 60 km. Zaprężyn, as a section located more to the north, has almost no lower younger loess and higher level of weathering which could be related to proximity of this site to the Ice Sheet margin. The climate here was more extreme and harsh. What is more,the difference in development of soil L1SS1 can be observed: while in Biały Kościół pedogenesis process was slower and less disturbed than in Zaprężyn. The upper part of L1SS1 in Biały Kościół was deformed by gelifluction, frost heave and other periglacial processes. Mz indicator by the grain-size distribution in these sediments reflects subtle variations in the climatic system. Moreover, in Zaprężyn the content of sand fraction is higher than in Biały Kościół what can be the evidence of short episodes of strong winds during cold period of sedimentation. The aim of this paper is to compare two loess profiles by their stratigraphical and lithological similarities which are result of climate conditions and features of surrounding environment.
    Źródło:
    Contemporary Trends in Geoscience; 2017, 6, 2; 94-111
    2299-8179
    Pojawia się w:
    Contemporary Trends in Geoscience
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    East-Siberian coregonid fishes: their occurrence, evolution and present status
    Autorzy:
    Yakhnenko, V. M.
    Mamontov, A. M.
    Luczynski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/363220.pdf
    Data publikacji:
    2008
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    system wodny
    zlodowacenie
    aktywność tektoniczna
    jezioro
    pochodzenie
    coregonidy
    specjacja
    sympatryczność
    allopatry
    coregonids
    glaciation
    origin of lakes
    speciation
    sympatry
    tectonic activity
    water systems
    Opis:
    Coregonid fishes (coregonids) (Salmonidae, Coregoninae) of Siberia show immense morphological and ecological variability, what is reflected in their complex interspecific and intraspecific structure: i.e. occurrence of numerous species, forms and endemic species. Studies of the coregonids of Siberia is crucially important for understanding of their origin, taxonomy and evolution. We have analysed electrophoretically some 13 enzyme systems from over 20 samples of East-Siberian coregonids. This paper was intended as an introduction to a number of primary papers that are planned that will describe the biological and genetic characteristics of studied populations.
    Źródło:
    Environmental Biotechnology; 2008, 4, 2; 41-53
    1734-4964
    Pojawia się w:
    Environmental Biotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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