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Wyszukujesz frazę "petrography" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
The petrography of glacial sediments in Uckermark, NE Brandenburg : a preliminary study
Autorzy:
Górska, M.
Powiązania:
https://bibliotekanauki.pl/articles/295004.pdf
Data publikacji:
2003
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
indicator erratic
petrography
Pommeranian phase
last glacial
Odra lobus
Uckermark
Brandenburg
Opis:
The Brandenburg section of the hinterland and of the maximum extent of the Pommeranian phase of the last glaciation, formed in two lobes (Schulz, 1967): Joachimsthal-Ringenwalder and Ucker-markischer, have been covered by a study on petrography of a gravelly and a stony fraction. The methods applied followed suggestions of Bose (1989), Trembaczowski (1961, 1967), Meyer (1983), Smed (1993, 1994) and Zandstra (1999). Petrographical analyses undertaken in Uckermark, NE Germany, were focused on: 1) observation of the dynamics of petrographical features along and in the hinterland of the Odra lobus on the German side, 2) indication of the western limit of the Odra lobus upon petrography of glacial sediments, 3) indication of Scandinavian parent areas of sediments of the Pommeranian phase and estimating the routes of ice-sheet onto German Lowland. The distance between outcrops of Scandinavian rocks causes the number of erratics in sediments of glacial accumulation in the German part of the Odra lobus. There are more Mesosoic rocks in the gravelly fraction as compared with sediments of the same age, but sampled in the Polish part of the Odra lobus. The stony fraction (20-60 mm) is represented mainly by indicator erratics from Smĺland and the Swedish coast in Kalmar Strait. Ĺland erratics, quite frequent in Polish lowlands, are observed rarely in Uckermark. Among statistical erratics there are numerous flints and Mesosoic limestones as well as Lower-Palaeozoic limestones. The theoretical stone centre moves its locality within middle-southern Smĺland.
Źródło:
Landform Analysis; 2003, 4; 39-48
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New findings of the Oslo region erratics in glaciofluvial deposits of NW Poland
Autorzy:
Lipka, Ewelina
Powiązania:
https://bibliotekanauki.pl/articles/294480.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
Oslo rhomb porphyry
Oslo basalt
clast petrography
indicator erratics
Saalian glaciation
Opis:
Glacial erratics of the Oslo region are only occasionally found in Poland. This is because the Norwegian Channel ice stream did not reach this area. Recently a few specimens of rocks representing Oslo region have been found at the Owczary site (north-western Poland), what raised questions regarding the relative age of the deposits, as well as the depositional history of the erratics. The questions were addressed using lithofacies analysis, as well as structural and textural analyses, combined with clast petrography (medium and coarse gravel). Clast petrography analysis revealed that the deposits containing rocks of the Oslo region are of the late Saalian age (Warthe), though some evidence suggest the early Saalian age (Drenthe).
Źródło:
Landform Analysis; 2019, 38; 3-11
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stratygrafia i litologia mineralnych osadów występujących w klifach środkowej części polskiego wybrzeża Bałtyku
Stratigraphy and lithology of minerogenic deposits in coastal cliffs, middle section of the Polish Baltic coast
Autorzy:
Olszak, I. J.
Florek, W.
Seul, C.
Majewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/294787.pdf
Data publikacji:
2008
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
klify
petrografia
stratygrafia
wiek osadów
polskie wybrzeże Bałtyku
cliffs
petrography
stratigraphy
age of sediments
Polish Baltic Sea coast
Opis:
Korzystając z dawnych i nowych opracowań geologicznych oraz własnych danych petrograficznych i stratygraficznych, autorzy przedstawili swoje poglądy na temat litologii i wieku osadów mineralnych budujących klify pomiędzy Jarosławcem a Dębiną. Najnowsze dane odbiegają od zakorzenionych w literaturze poglądów.
New views about lithology and age of deposits building coastal cliffs between Jarosławiec and Dębina, diverging from the models rooted in the literature, are presented by the authors. The revision is based on critical re-assessment of older and more recent geological reports and new results of petrological and stratigraphic research. The oldest glacial deposit exposed in cliff sections is grey till. Petrological data and TL dating results indicate clearly that it was deposited during the Świecie stadial. At Jarosławiec site, the till is enriched in Tertiary organic material and divided into two layers based on colour. However, petrology and TL age determinations do not differ between these layers. In the cliffs investigated, as well as in the other coastal cliffs in the eastern Pomorze region, older tills do not occur. Likewise, tills from the main stage of the last glaciation have not been recognized. The Świecie stadial till is overlain by outwash, glacilimnic and limnic deposits, the latter dated for the Grudziądz interstadial. Almost everywhere the near-surface layer is built of late Holocene aeolian sand with palaeosols.
Źródło:
Landform Analysis; 2008, 7; 113-118
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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