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    Wyświetlanie 1-2 z 2
    Tytuł:
    Conditions of sedimentation in the Weichselian glaciomarginal zone of northeast ern Germany
    Autorzy:
    Górska-Zabielska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060222.pdf
    Data publikacji:
    2008
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    northeastern Germany
    Pomeranian phase
    lithofacial analysis
    environmental architecture components
    Opis:
    The conditions of glacigenic sedimentation during the Pomeranian Phase of the Weichselian Glaciation in northeastern Germany are reconstructed on the ba sis of the typical lithofacies successions and the depositional architecture of the distal and proximal parts of a sandur, as well as of those in the hinterland area of the glaciomarginal zone. The proximal parts of the sandur are characterized by the occurrence of boulders, pebbles and gravels, and horizontally stratified sands cut by large channel troughs in the upper parts. The occurrence of the channel structures indicates frequent torrential ablation floods. Horizontally and cross-stratified rhythms of sandy and gravelly lithofacies, indicating pulsatory ablation flows, are also frequent. The distal part of the sandur is dominated by horizontally stratified sands and sands with low- angle tabular cross-stratification. In the hinter land of the Pomeranian Glaciation, a thick layer of till is present, which locally is glaciotectonically deformed. Moraines left during glacial retreat, with gravity-redeposited till, are also present.
    Źródło:
    Geological Quarterly; 2008, 52, 2; 157-157
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Petrographic analyses and indicator erratics of gravels of the Odra lobe
    Autorzy:
    Górska-Zabielska, Maria
    Zabielski, Ryszard
    Powiązania:
    https://bibliotekanauki.pl/articles/2026730.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    petrography of glacial gravels
    Scandinavian erratics
    Pomeranian phase
    Odra lobe
    north-eastern Germany
    north-western Poland
    Opis:
    Fennoscandinavian er rat ics found in the gla cial de pos its till and in the glaciofluvial sed i ments within the main limit of the Odra gla cier lobe (NW Po land and NE Ger many), have been ex am ined in two frac tions: of 4–10 mm and 20–60 mm. The most nu mer ous in the frac tion of 4–10 mm are: crys tal line rocks (Cr; 35–40%) orig i nat ing in the Pro terozoic Bal tic Shield as well as Lower Palaeozoic lime stones (LPL; 35–40%) – from the sed i men tary sheet cov er ing the Pro tero zoic Bal tic Shield in the area of cen tral Bal tic Sea. Per cent age of sand stones (S) amounts to 10–15%. The remain ing rock types (sev eral per cent each) are: Palaeozoic shales (PS), the out crops of which are lo cal ized in Scania (Sk¯ne) and on Born holm, Cre ta ceous lime stones (CL) and flintstones (F) orig i nat ing from the west ern part of the south ern Bal tic Sea as well as quartz (Q), milk quartz (MQ) and iso lated grains of De vo nian dolomites (DD). From the anal y sis of in di ca tor er rat ics, which was car ried out in the 20–60 mm frac tion, it ap pears that mainly the out -crops lo cal ized in Sm¯land (e.g. red and grey Växjö gran ites, P¯skallavik por phy ries or Tessini and Kalmarsund sand - stones) as well as in Scania (Höör and Hardeberga sand stones) and Re gion Blekinge–Born holm (e.g. Karlshamn and Halen gran ites as well as NexÝ and Bavnodde sand stones) had been sub jected to the gla cial pluck ing. The o ret i cal boul der cen tres (TBC, Ger man: TGZ das Theoretische Geschiebezentrum, Lüttig 1958), which were cal cu lated for 23 sam ples, are lo cal ized mostly in a small area in Sm¯land, be tween 15°E–16°E and 56.5°N–58.5°N. Apart from in di ca - tor er rat ics the sta tis ti cal ones are nu mer ous, that are first of all grey and red Lower Palaeozoic lime stones with their out crops lo cal ized at the bot tom of the cen tral Bal tic Sea. Tak ing into ac count the TBC val ues of in di ca tor er rat ics as well as high per cent age of sta tis ti cal er rat ics it can be pro nounced that the sec tion of cen tral and west ern Bal tic Sea as well as the one of south-east ern Swe den had been sub jected to the heavi est gla cial pluck ing by that part of the Pleis to - cene ice-sheet which reached the stud ied area dur ing the Pom er a nian Phase.
    Źródło:
    Studia Quaternaria; 2010, 27; 17-25
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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