Įvadinės mintys apie Vilniaus miesto istorinį žemėvaizdį
In the area of the historical city, the terrace shapes from the east, south and west sides comprise a natural amphitheatre surrounded by hills. Below the confluence with Vilnia, on the level of the third terrace, the river current formed a plateau. The Neris river above the confluence with Vilnia, n...
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| Format: | Article in Journal/Newspaper |
| Language: | Lithuanian English |
| Published: |
2010
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| Subjects: | |
| Online Access: | http://lmavb.lvb.lt/LMAVB:ELABAPDB5862421&prefLang=en_US |
| Summary: | In the area of the historical city, the terrace shapes from the east, south and west sides comprise a natural amphitheatre surrounded by hills. Below the confluence with Vilnia, on the level of the third terrace, the river current formed a plateau. The Neris river above the confluence with Vilnia, nearing the Sapieginė and Altarija hills, accelerated erosion processes in those hills. The break of Vilnia through the moraine highland separated the territory of historical Vilnius into two orographic units (Kuprioniškės-Salininkai moraine slope and the Sapieginė-Altarija angular landmass, see Picture 1) and formed the Vilnia canyon. By carving ever deeper and continuing southwards, Vilnia formed the Paplauja floodplain, surrounded by steep slopes from the south and (Picture 2, E1); the Sereikiškės park (Picture 2, E2); Cathedral and Daukantas squares’ (Picture 2, E3) and Vilnius delta (Picture 2, E4) plain fields. Both of these rivers formed unrepresentative height variations in a small territory, as well as attractive slopes and valleys, by carving up to 82-88 m NN inside the city boundaries. The plastic shapes of the slopes and valleys were influenced by the meandering of Neris and Vilnia and the movement of the place of confluence from the current P. Cvirka square area towards the base of Gediminas hill. Besides rivers, Vilnius’ terrain was also formed by the so called secondary processes (solifluction, sufosis, thermokarst, erosion). During the historical period, further drift of Neris towards Sapieginė and Altarija hills was stopped using artificial methods, and the river was even pushed back 40-60 meters north at Altarija and Gediminas hill in the XVIth and XIXth centuries. |
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