Ewolucja systemu hydrograficznego i szaty roślinnej dorzecza górnej Piławy i górnej Drawy (Pomorze Środkowe)
Evolution of the hydrographic system and vegetation in the drainage basin of the upper Piława and the upper Drawa Rivers (Middle Pomerania).A b s t r a c t. Highly varied hydrographic system occurs in the drainage basins of the upper Piława, Płytnica and Drawa Rivers (Middle Pomerania). Numerous rad...
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ftjgq:oai:geojournals.pgi.gov.pl:article/30615 2024-09-15T18:11:42+00:00 Ewolucja systemu hydrograficznego i szaty roślinnej dorzecza górnej Piławy i górnej Drawy (Pomorze Środkowe) Lewandowski, Józef Nita, Małgorzata 2008-05-29 application/pdf https://gq.pgi.gov.pl/pg/article/view/30615 eng eng Państwowy Instytut Geologiczny - PIB https://gq.pgi.gov.pl/pg/article/view/30615/22248 https://gq.pgi.gov.pl/pg/article/view/30615 Copyright (c) 2021 Przegląd Geologiczny Przegląd Geologiczny; Vol. 56 No. 5 (2008); 380 - 390 Przegląd Geologiczny; Tom 56 Nr 5 (2008); 380 - 390 0033-2151 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artykuł naukowy 2008 ftjgq 2024-07-30T03:29:09Z Evolution of the hydrographic system and vegetation in the drainage basin of the upper Piława and the upper Drawa Rivers (Middle Pomerania).A b s t r a c t. Highly varied hydrographic system occurs in the drainage basins of the upper Piława, Płytnica and Drawa Rivers (Middle Pomerania). Numerous radiometric dating carried out by the methods of 14C, OSL and U/Th, as well as pollen analyses and geomorphological analysis enable to study evolution of the system in the period of the last twelve thousand years. Glaciolacustrine deposits, accompanying most of the lakes, represent accumulation, which took place at the initial stage of the lacustrine basin formation. The level of lacustrine waters fell by several to more than a twelve meters in that time and was controlled by melt water runoff channeled through valleys in the southern direction. The final stage of the lake development was connected with complete melting of buried dead-ice masses and formation — bottoms of lake. Evolution from glaciolacustrine to lacustrine basins within kettles was continuous process. Lake water level started to fall abruptly when the last remnants of the dead ice blocking the runoff have melted and the inter-lake channels have been erosionaly deepened. That phase should be related to the complete decay of permafrost, probably at the end of the Allerød. The main phase of erosion in the gorges started at the end of the Pleistocene and lasted (with lower intensity) till the Pre-Boreal and/or the Boreal. The water level in the lake system drained by the Pi³awa and the Drawa Rivers was finally fallen by 8–16 meters and for a long time was stabilized (during the Atlantic and Sub-Atlantic) at the level of 2 meters higher than the present one. Further lowering of drained lakes by the next 2 meters was probably caused by anthropogenic activities resulting from intensive colonization in the 16th and 17th centuries and later by land improvement accomplished in the drainage basins of the Drawa and the Piława Rivers in the 19th century. Local ... Article in Journal/Newspaper Ice permafrost Geological Quarterly |
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Geological Quarterly |
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ftjgq |
language |
English |
description |
Evolution of the hydrographic system and vegetation in the drainage basin of the upper Piława and the upper Drawa Rivers (Middle Pomerania).A b s t r a c t. Highly varied hydrographic system occurs in the drainage basins of the upper Piława, Płytnica and Drawa Rivers (Middle Pomerania). Numerous radiometric dating carried out by the methods of 14C, OSL and U/Th, as well as pollen analyses and geomorphological analysis enable to study evolution of the system in the period of the last twelve thousand years. Glaciolacustrine deposits, accompanying most of the lakes, represent accumulation, which took place at the initial stage of the lacustrine basin formation. The level of lacustrine waters fell by several to more than a twelve meters in that time and was controlled by melt water runoff channeled through valleys in the southern direction. The final stage of the lake development was connected with complete melting of buried dead-ice masses and formation — bottoms of lake. Evolution from glaciolacustrine to lacustrine basins within kettles was continuous process. Lake water level started to fall abruptly when the last remnants of the dead ice blocking the runoff have melted and the inter-lake channels have been erosionaly deepened. That phase should be related to the complete decay of permafrost, probably at the end of the Allerød. The main phase of erosion in the gorges started at the end of the Pleistocene and lasted (with lower intensity) till the Pre-Boreal and/or the Boreal. The water level in the lake system drained by the Pi³awa and the Drawa Rivers was finally fallen by 8–16 meters and for a long time was stabilized (during the Atlantic and Sub-Atlantic) at the level of 2 meters higher than the present one. Further lowering of drained lakes by the next 2 meters was probably caused by anthropogenic activities resulting from intensive colonization in the 16th and 17th centuries and later by land improvement accomplished in the drainage basins of the Drawa and the Piława Rivers in the 19th century. Local ... |
format |
Article in Journal/Newspaper |
author |
Lewandowski, Józef Nita, Małgorzata |
spellingShingle |
Lewandowski, Józef Nita, Małgorzata Ewolucja systemu hydrograficznego i szaty roślinnej dorzecza górnej Piławy i górnej Drawy (Pomorze Środkowe) |
author_facet |
Lewandowski, Józef Nita, Małgorzata |
author_sort |
Lewandowski, Józef |
title |
Ewolucja systemu hydrograficznego i szaty roślinnej dorzecza górnej Piławy i górnej Drawy (Pomorze Środkowe) |
title_short |
Ewolucja systemu hydrograficznego i szaty roślinnej dorzecza górnej Piławy i górnej Drawy (Pomorze Środkowe) |
title_full |
Ewolucja systemu hydrograficznego i szaty roślinnej dorzecza górnej Piławy i górnej Drawy (Pomorze Środkowe) |
title_fullStr |
Ewolucja systemu hydrograficznego i szaty roślinnej dorzecza górnej Piławy i górnej Drawy (Pomorze Środkowe) |
title_full_unstemmed |
Ewolucja systemu hydrograficznego i szaty roślinnej dorzecza górnej Piławy i górnej Drawy (Pomorze Środkowe) |
title_sort |
ewolucja systemu hydrograficznego i szaty roślinnej dorzecza górnej piławy i górnej drawy (pomorze środkowe) |
publisher |
Państwowy Instytut Geologiczny - PIB |
publishDate |
2008 |
url |
https://gq.pgi.gov.pl/pg/article/view/30615 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Przegląd Geologiczny; Vol. 56 No. 5 (2008); 380 - 390 Przegląd Geologiczny; Tom 56 Nr 5 (2008); 380 - 390 0033-2151 |
op_relation |
https://gq.pgi.gov.pl/pg/article/view/30615/22248 https://gq.pgi.gov.pl/pg/article/view/30615 |
op_rights |
Copyright (c) 2021 Przegląd Geologiczny |
_version_ |
1810449273340297216 |