- Tytuł:
- Reconstruction of the Vistula ice stream during the Last Glacial Maximum in Poland
- Autorzy:
- Morawski, W.
- Powiązania:
- https://bibliotekanauki.pl/articles/2059221.pdf
- Data publikacji:
- 2009
- Wydawca:
- Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
- Tematy:
-
N Poland
Vistula valley
Pleistocene
ice stream
glacial morpholineaments - Opis:
- The variability ofice movement directions within the Vistula lobe of the Main Stadial ice sheet of the last glaciation is analysed. Reconstruction of the ice movement directions is made based on analysis of the orientation of glacial morpholineaments. Linear glacial land forms are analysed on the basis of data from 26 map sheets of the Detailed Geo logical Map of Poland (DGMP), scale 1:50 000, compiled earlier by various au thors. The morpholineaments were investigated in a belt of morainic plateau that adjoins the Vistula valley on both sides. The analysis revealed that the last glaciation ice sheet advanced directly from the north within the broadly un der stood Vistula ice lobe zone, and that the ice flow direction was constant. However, within a narrow belt of the pre-Vistula River valley that was formed in the Eemian Interglacial, the 30–50 km wide ice stream was characterized by locally variable ice flow directions consistent with the pre-existing valley trend. Changes in ice flow direction are recorded in the locally variable orientation of lin ear glacial landforms, indicating that the ice stream was active until the deglaciation period when the pres ent-day shapes of the glacial landforms developed.
- Źródło:
-
Geological Quarterly; 2009, 53, 3; 305-316
1641-7291 - Pojawia się w:
- Geological Quarterly
- Dostawca treści:
- Biblioteka Nauki
Artykuł