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The evolution of river valleys in Lithuania from deglaciation to recent changes and data from the sediment infill of oxbow lakes

Published online by Cambridge University Press:  01 April 2016

A. Gaigalas  and
V. Dvareckas
A. Gaigalas*
Affiliation:
Vilnius University, Faculty of Natural Sciences, Cziurlionio 21/27, 2009 Vilnius, Lithuania
V. Dvareckas
Affiliation:
Vilnius University, Faculty of Natural Sciences, Cziurlionio 21/27, 2009 Vilnius, Lithuania
*
*Corresponding author; e-mail: [email protected]
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Abstract

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Generalized analysis of geological-geomorphological structures of river valleys in Lithuania has been carried-out. Lithuania’s fluvial topography results from the retreat of the Scandinavian Nemunas (= Vistulian and/or Valdaian) Glaciation, as is shown by the study of geomorphological structures in the recent river valleys (representing the last 15,000 years), which were formed as the ice sheets progressively retreated and ice-barrier lakes were drained. Oxbows in the river valleys are most often located on the floodplain itself and on the first terrace above the floodplain. The oxbow lakes are subdivided into two groups: (1) formed in the near-river stage and (2) formed in the lake-bog stage. Separate development phases can be recognized within both groups of oxbow lakes. The more organic components of oxbow deposits provide specific information for palaeoecological reconstructions.

Anthropogenic changes to the natural landscapes of Lithuania have resulted in considerable geological transformation of rivers. Increased sediment volume, shallowing, silting and overgrowing of channels, lateral erosion of floodplains and the spread of ravine erosion on valley-side slopes are all phenomena characteristic of all the valleys in Lithuania. At present the natural components of river valleys and their ecosystems are being changed, mainly with negative consequences for humans.

Keywords

LithuaniaLast GlacialdéglaciationHoloceneoxbow lakeshuman impact
Type
Research Article
Information
Netherlands Journal of Geosciences , Volume 81 , Special Issue 3-4: Fluvial Archive Group, FLAG , December 2002 , pp. 407 - 416
Copyright
Copyright © Stichting Netherlands Journal of Geosciences 2002

References

Beconis, M. & Dvareckas, V., 1991. Geomorphological investigations of the bed and flood plain processes in the rivers of Lithuania. The geographical yearbook 27, Natural processes. Vilnius: 34–49 (in Lithuanian).Google Scholar
Dvareckas, V. 1960. Morphogenesis of the oxbow lakes in recent physycogeographical conditions. The geographical yearbook 3, Vilnius: 177–191 (in Lithuanian).Google Scholar
Dvareckas, V. & Beconis, M., 1987. Morphogenesis of river valleys in the Southern Peribaltic area and human impact on recent processes. Palaeohydrology of the temperate zone, I, Rivers and Lakes. Tallinn, “Valgus”: 111–119.Google Scholar
Gaigalas, A., 1998. The evolution of the geological environment of the Castles Vilnius. PACT 54: 111–130.Google Scholar
Gaigalas, A., Dvareckas, V. Florek, V. & Beconis, M., 1991. Geomorphodynamic processes in the river valleys of Lithuania and Poland. The geographical yearbook 27, Natural processes. Vilnius: 34–43 (in Lithuanian).Google Scholar
Gaigalas, A. & Dvareckas, V., 1987. Geomorphological structure and development of river valleys during last Glaciation and Holocene in the South Peribaltic area. Palaeohydrology of the temperate zone, I, Rivers and Lakes. Tallinn, “Valgus”: 99–110.Google Scholar
Gaigalas, A., Dvareckas, V. & Banys, J., 1987. Reconstruction of sedimentation conditions in the oxbow lakes of Lithuanian river valleys. Methods for the investigation of lake deposits: palaeoecological and palaeoclimatological aspects. Vilnius: 228–234.Google Scholar
Gaigalas, A., Dvareckas, V. & Karmaza, B., 2001. Surfacial flow. Stone age in South Lithuania. Vilnius: 114–122 (in Lithuanian).Google Scholar
Kabailienė, M., 1998. Vegetation history and climate changes in Lithuania during the Late Glacial and Holocene, according to Pollen and Diatom data. Pact 54. I-1, Belgium. Rixensart: 13–30.Google Scholar
Kabailienė, M., 1999. Geological development of, and human impact on the coastal area of the Southern Baltic, interpreted from Pollen and Diatom evidence. Pact 57. I-3. Belgium. Rixensart: 71–87.Google Scholar
Rimantiennė, R. 1999. Traces of agricultural activity in the Stone age settlements of Lithuania. Pact 57. III-1 b. Belgium, Rixensart: 275–290.Google Scholar
Seibutis, A. & Savukynienė, N., 1998. A review of major turning points in the agricultural history of the area inhabited by the Baltic peoples, based on palynological, historical and linguistic data. Pact 54, 1–4. Belgium, Rixensart: 50–59.Google Scholar