MORPHOMETRIC ANALYSIS OF GEOMORPHOLOGICAL FORMATIONS OF THE ALTAI-SAYAN MOUNTAIN REGION AND ADJACENT AREAS OF CENTRAL ASIA

V. N. Dobretsov; I. S. Novikov; I. D. Zolnikov; N. N. Dobretsov

doi:10.5800/GT-2026-17-2-0887

MORPHOMETRIC ANALYSIS OF GEOMORPHOLOGICAL FORMATIONS OF THE ALTAI-SAYAN MOUNTAIN REGION AND ADJACENT AREAS OF CENTRAL ASIA

V. N. Dobretsov, I. S. Novikov, I. D. Zolnikov, N. N. Dobretsov

https://doi.org/10.5800/GT-2026-17-2-0887

EDN: QCKBML

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Abstract

This work presents an analysis of morphometric parameters for low-mountain, mid-mountain, and high-mountain geomorphological formations of the Great Altai, Western Sayan, and Eastern Sayan. The geomorphological formations of the mountain belt are associated with neotectonic blocks that experienced the Late Cenozoic uplift. Anaysis has been made of the morphometric parameters such as absolute elevations, depth and density of dissection, average slope angles, and the degree of preservation of the planation surface (peneplain) formed within the study area prior to the onset of neotectonic activation. The characterization has been performed of criteria for morphometric differentiation between geomorphological formations of the mountain belt. It has been found that the density of dissection does not differ between the different types of formations, whereas all other parameters show a significant difference. The identified similarity in horizontal dissection across different formations suggests that the initiation of the hydrographic network was the early orogenic stages, after which it had continued to develop inheritedly.

Keywords

Altai-Sayan Mountains, morphometric relief parameters, geomorphological formations, neotectonics, geoinformation technologies

About the Authors

V. N. Dobretsov

Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Russian Federation

3 Academician Koptyug Ave, Novosibirsk 630090

Competing Interests:

The authors declare that they have no conflicts of interest relevant to this manuscript.

I. S. Novikov

Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Russian Federation

3 Academician Koptyug Ave, Novosibirsk 630090

Competing Interests:

The authors declare that they have no conflicts of interest relevant to this manuscript.

I. D. Zolnikov

Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Russian Federation

3 Academician Koptyug Ave, Novosibirsk 630090

Competing Interests:

The authors declare that they have no conflicts of interest relevant to this manuscript.

N. N. Dobretsov

Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Russian Federation

3 Academician Koptyug Ave, Novosibirsk 630090

Competing Interests:

The authors declare that they have no conflicts of interest relevant to this manuscript.

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For citations:

Dobretsov V.N., Novikov I.S., Zolnikov I.D., Dobretsov N.N. MORPHOMETRIC ANALYSIS OF GEOMORPHOLOGICAL FORMATIONS OF THE ALTAI-SAYAN MOUNTAIN REGION AND ADJACENT AREAS OF CENTRAL ASIA. Geodynamics & Tectonophysics. 2026;17(2):0887. (In Russ.) https://doi.org/10.5800/GT-2026-17-2-0887. EDN: QCKBML

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