Geomorphological formations of the South of Western Siberia and adjacent territories

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Abstract

Within the south of Western Siberia and adjacent territories, 23 types of Land systems (parageneses of genetically homogeneous surfaces/land units) have been identified, belonging to three physiographic zones: flat, foothill and mountain, as well as one type of extrazonal formations. The use of formational analysis has made it possible to identify genetic relationships between large spatially separated geomorphological elements, considering them as formational series. For the first time, a catafluvial geomorphological formation has been identified for the south of Western Siberia, and its place among other geomorphological formations in the region has been shown. A connection has been established between the ancient drainage troughs of Western Siberia, transit erosion valleys and catafluvial events (superfloods).

About the authors

I. S. Novikov

Sobolev Institute of Geology and Mineralogy of SB RAS

Author for correspondence.
Email: novikov@igm.nsc.ru
Russian Federation, Novosibirsk

References

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Supplementary files

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2. Fig. 1. Layout of the territory under consideration.

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3. Fig. 2. Morphological types of relief in the south of Western Siberia and adjacent territories. 1 – river valleys (1.1 – Irtysh, 1.2 – Ob, 1.3 – Yenisei); 2 – plains (2.1 – Irtysh, 2.2 – Vasyugan, 2.3 – Baraba, 2.4 – Kulunda, 2.5 – Ob, 2.6 – Ketsko-Tym, 2.7 – Chulym); 3 – plateaus (3.1 – Zaangarskoe, 3.2 – Priangarskoe); 4 – low hills (4.1 – Kazakh); 5 – foothills (5.1 – Bugotaksko-Sokur, 5.2 – Chumysh); 6 – plains of large intermountain basins (6.1 – Kuznetsk, 6.2 – North Minusinsk, 6.3 – South Minusinsk, 6.4 – Todzhinsk, 6.5 – Tuva, 6.6 – Zaisan, 6.7 – Kyndyktykul-Achitnur, 6.8 – Ubsunur, 6.9 – Bolshie Ozeri, 6.10 – Darkhat, 6.11 – Tunka-Khubsugul); 7 – mountain structures (7.1 – Yenisei Ridge, 7.2 – Salair Ridge, 7.3 – Kuznetsk Alatau and Mountain Shoria, 7.4 – Rudny Altai, 7.5 – Russian (Mountain) and Mongolian Altai, 7.6 – Western Sayan, 7.7 – Eastern Sayan, 7.8 – Tannu-Ola, 7.9 – Academician Obrucheva, 7.10 – Selinga Highlands, 7.11 – Turgein-Nuru, 7.12 – Han-Hukhiin Ula, 7.13 – Hangai).

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4. Fig. 3. Land systems of the south of Western Siberia and adjacent territories. Accumulative. Plains: 1 – alluvial terrace, 2 – alluvial-proluvial, 3 – proluvial sloping, 4 – sandy eolian, 5 – upland bog plains, 6 – lacustrine, 7 – moraine, 8 – volcanogenic, 9 – catafluvial, 10 – small intermountain basins. Denudation. Plains: 11 – sheet, developed in clayey deposits of the early and middle Cenozoic, 12 – sheet, developed in deposits of the early and middle Cenozoic and covered by a cover of upper Cenozoic subaerial deposits, 13 – inclined, developed in rocks of the middle and upper Mesozoic, 14 – structural plateaus, developed in late Paleozoic and Mesozoic rocks; small hills: 15 – denudation, developed in Paleozoic rocks, 16 – denudation, developed in Paleozoic rocks, covered by a thin cover of Upper Cenozoic subaerial deposits, 17 – cuesta, developed in Upper Paleozoic and Middle Mesozoic rocks, 18 – foothills, developed in Upper Paleozoic, Mesozoic and Cenozoic rocks, 19 – linear forberg; mountains: 20 – lowlands, 21 – middle mountains, 22 – highlands; extra-zonal: 23 – transit erosional valleys.

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5. Fig. 4. Reflection of catafluvial events of the Pleistocene in the south of Western Siberia in the spatial distribution of geomorphological formations. 1 – areas of the flooding during catafluvial events; 2 – areas of development of glacial-dammed lakes; 3 – discharge channels and flow directions.

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