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Algimantas Česnulevičius
Sedimentary cover in former South-East Lithuania glaciolacustrine basin
and its influence for groundwater infiltration
| Conference Information: |
9th International Conference on Environmental
Engineering, MAY 22-24, 2014 Vilnius, LITHUANIA |
| Source: |
ICEE-2014 - International Conference on Environmental
Engineering |
| Book Series: |
International Conference on Environmental Engineering
(ICEE) Selected papers |
| ISSN: |
ISSN 2029-7092 online |
| ISBN: |
978-609-457-640-9 / 978-609-457-690-4 CD |
| Year: |
2014 |
| Publisher: |
Vilnius Gediminas Technical University Press Technika |
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Abstract
The emergence of periglacial lakes in the territory of Lithuanian was conditioned by recessions and oscillations of the Baltija stage of
Nemunas glacial. The slow recession of the glacier edge affected the evolution and drainage of the basins. Establishment of the drainage
levels and analysis of the sections of glaciolacustrine sediments allows revealing their relationships with the recession phases of degrading
glacier. The last stage of East and South Lithuanian glaciolacustrine basins – full drainage – was very important in their evolution. The
intensity of glaciolacustrine drainage could be slow or cataclysmic. At one time in Late Glacial (Weichselian) existed seven large
glaciolacustrin bassins. The oldest (about 130 ka) occupied glaciodepresions between Neris Middlestream, Vilnia and Dainava ice-
tongues. Small and shallow basins were in high level: the eastern basin which affluent by Neris Middlestream and Vilnia ice-tongues
shoreline was fixed in 220 m (Ašmena, in Belarus) and western basin which affluent by Vilnia and Dainava ice-tongues – in 200 m about
middle sea level (ASL). In next stage (17–19 ka) cascade of glaciolacustrin basin existed in East Lithuania. The highest level basins had in
north part and lowest – in south: Žeimena glaciolacustrine basin was in 155–160 m ASL, the Labanoras – 150–155, the Vilnia – 140–145 m,
the Merkys Middlestream – 135 m, the Dubičiai – 125, the Biebrza (in Poland) – 110 m ASL. In central parts of former glaciolacustrine
basins accumulated clay and loam, in peripherial parts – gravel, sand and silt. The granulometric composition of sediment layers determined
infiltration conditions of recent surface-water. The goal of this article – evaluate infiltration condition and amount of surface-water in
central and peripheral parts of different former glaciolacustrine basins.
Keywords:groundwater; infiltration; surface-water; sediments; glaciolacustrine.
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